Answer:
the answer of this equation has to be six
The total production of 16395 tons of wheat was divided equally and sent to 76 public distribution shops and the remaining was used for midday meals for students on a National Holiday. Find the quantity of wheat used for midday meals? Mention the value you depict from this.
Answer:
55 tons
Step-by-step explanation:
to determine the tons shared among the shops, determine the whole number that would be derived in 16395 were divided by 76. it is 215
multiply 215 by 76 and subtract from 16375
16375 - 16340 = 55
Round off 31623 to the nearest ten thousand
Answer:
30,000
Step-by-step explanation:
31623
1 is less than 5 so you dont round up
30,000
-- Gage Millar, Algebra 2 Tutor
Find all numbers between 200 and 500 which have exactly 9 factors
Answer:
225, 256, 441, 484
Step-by-step explanation:
Only square numbers can have an odd number of factors, e.g. 4: 1, 2, 4
Therefore only square numbers can have 9 factors.
There are only 8 square numbers between 200 and 500: 225, 256, 289, 324, 361, 400, 441, 484.
One way is to list all the factors of each number and you will find that only 225, 256, 441 and 484 have 9 factors.
The other more efficient way is to acknowledge the fact that if a square number (n x n) has 9 factors, n must have only 4 factors. For example, 225 has 9 factors because it is equal to 15 squared and 15 only has 4 factors: 1, 3, 5, 15.
This way, we can find out that 15, 21 and 22 have exactly 9 factors. However, 256 has 9 factors as well as it is equivalent to 2 to the power of 8. This means that it already has 8 factors: 2, 4, 8, 16...,128, 156. However, we must include 1 as a factor which means it has 9 factors in total as well.
what was her overall quiz average of a 90 for the quarter ? pls answer
Answer:
She needs at least a 105 to get a 90 :/
Step-by-step explanation:
If you add all those up and divide it by 5 (the mean) you get an 86.5, then if you add 105 and divide up all those numbers by 6 you get a 90.166667
Marking brainliest
Please help!
Given the radius is 6 inches, what is the area of the circle?
Area =
inches2 (the 2 is supposed to be an exponent)
Answer:
I wasn't sure how you're supposed to answer, so the answers for each scenario are in the explanation!
Step-by-step explanation:
[tex]A=\pi r^{2}[/tex]
[tex]A=\pi (6^{2})[/tex]
[tex]A=\pi (36)[/tex]
From here, there can be a few different answers:
The exact answer is A=36π inches^2.
If you need to round, round this to wherever you need it: A=113.0973355292326... inches^2
If you're using 3.14 for pi, the answer is A=113.04 inches^2.
Tahari is shopping for a new car. She is making her decision based on brand, color, and style. She can choose from 4 brands, 5 colors, and 3 styles. First, Tahari chooses the color. Which explains the number of options that she has left after she chooses the color? Tahari has 60 options left because Tahari has 12 options left because she has options left. Tahari has 12 options left because . Tahari has 7 options left because she has options left.
Answer:After choosing the color she still has the choices of brands and style so:
Tahari has 4*3=12 options left.
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
right on edge
What is the value of X?
Answer:
x = 42-degrees
Step-by-step explanation:
x + 48 = 90 --> *subtract 48 from both sides*
x = 42
Answer:
42
Step-by-step explanation:
Because the entire angle is equal to 90, you have to find 90-48 which is 42.
Is the discriminant of g positive, zero, or negative?
Answer:
Negative
Step-by-step explanation:
Positive discriminant: graph cuts x axis twice
Zero discriminant: graph touches x axis once
Negative discriminant: graph does not cut or touch x axis
pls can u help me with this
Answer:
A = 1.26
B = 1.22
Store B is better
Step-by-step explanation:
5.04 divided by 4
2.44 divided by 2
A screening examination was performed on 250 persons for factor X, which is found in disease Y. A definitive diagnosis for disease Y among the 250 persons had been obtained previously. The results are charted here: The sensitivity of this test is expressed as: A. 30%. B. 80%. C. 56%. D. 70%. E. 7%.
This question is incomplete, the complete question is;
A screening examination was performed on 250 persons for factor X, which is found in disease Y. A definitive diagnosis for disease Y among the 250 persons had been obtained previously. The results are charted here:
Test Results Disease Present Disease Absent
Positive for Factor X 40 60
Negative for Factor X 10 140
a) Based on the information provided, The sensitivity of this test is expressed as: A. 30%. B. 80%. C. 56%. D. 70%. E. 7%.
b) Based on the information provided, The specificity of this test is expressed as: A. 30%. B. 80%. C. 56%. D. 70%. E. 7%.
Answer:
a)
The sensitivity of this test is expressed as 80%
Option B) 80% is the correct answer.
b)
The specificity of this test is expressed as 70%
Option D) 70% is the correct answer.
Step-by-step explanation:
Given the data in the question;
Test Results Disease Present Disease Absent
Positive for Factor X 40 60
Negative for Factor X 10 140
Number of persons affected by disease with positive factor of X = 40
Number of persons with negative factor of X without the disease = 140
Total number of persons affected by the disease = 40 + 10 = 50
Total number of persons not affected by the disease = 60 + 140 = 200
a) Sensitivity of the Test;
Sensitivity = [( Number of persons affected by disease with positive factor of X ) / ( Total number of persons affected by the disease )] × 100
we substitute
Sensitivity = [ 40 / 50 ] × 100
Sensitivity = 0.8 × 100
Sensitivity = 80%
Therefore, The sensitivity of this test is expressed as 80%
Option B) 80% is the correct answer.
b) The specificity of the test;
Specificity = [ ( Number of persons with negative factor of X without the disease) / ( Total number of persons not affected by the disease ) ] × 100
we substitute
Specificity = [ 140 / 200 ] × 100
Specificity = 0.7 × 100
Specificity = 70%
Therefore, The specificity of this test is expressed as 70%
Option D) 70% is the correct answer.
a triangle has side lengths 10, 16, and 11. is the triangle actue, obtuse, or right?
Answer:
Obtuse
Step-by-step explanation:
a^2 + b^2 = c^2
10^2 + 11^2 = 16^2
100 + 121 = 256
221 = 256
221 < 256
A triangle has side lengths 10, 16, and 11. is the triangle is obtuse.
Name three types of triangles based on angles?Triangles can be classified into three types with respect to their interior angles which are:
1. Acute-angled
2. Obtuse-angled
3. Right-angled
Acute Triangle
An acute triangle is a triangle whose all the three interior angles are acute. In other words, if all interior angles are less than 90 degrees, then it is an acute-angled triangle.
Obtuse Triangle
Obtuse triangles are those in which one of the three interior angles has a measure greater than 90 degrees. In other words, if one of the angles in a triangle is an obtuse angle, then the triangle is called an obtuse-angled triangle.
Right Triangle
A right triangle is a triangle in which one of the angles is 90 degrees. In a right-angled triangle, the side opposite to the right angle (90-degree angle) will be the longest side and is called the hypotenuse.
Three given sides are 10, 11, 16
Let a = 10, b = 11, c = 16
then, [tex]a^{2} +b^{2} = 10^{2} +11^{2}[/tex]
= 100 + 121
= 221
and [tex]c^{2} = 16^{2} =256[/tex]
Since, [tex]a^{2} +b^{2} < c^{2}[/tex]
Thus, given triangle is obtuse.
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What is the rule for reflecting across the x-axis?
(x,y)=(x,-Y)
O (x,y)=(-x,y)
O (x,y)=(-x-7)
O (x,y)=(x,y)
As a block of ice melts, its weight changes from 1 3/4 lb to 1/4 lb. This change takes 1/4 h. The ice melts at a constant rate. At what rate does the weight of the ice change? Show your work.
pleaseeeeee help =)
As a block of ice melts, its weight changes from 1 3/4 lb to 1/4 lb. This change takes 1/4 h. The ice melts at a constant rate. At what rate does the weight of the ice change?
Answer:-You should have these values backwards like:-
=> 1/34 lb is less than 1/4 lb.
Next:-
We're gonna find a specific common denominator,
Then we get: (17/68 - 2/68)/(1/4) = 60/68 = 15/17 lb/hour
___________________________
[tex]\huge{ \mathfrak{ \underline{ Answer}}} \: \: ✓ [/tex]
____________________________
Change in weight :
[tex]1 \dfrac{3}{4} - \dfrac{1}{4} [/tex][tex] \dfrac{7}{4} - \dfrac{1}{4} [/tex][tex] \dfrac{6}{4} lb[/tex]_____________________________
Time taken to melt :
[tex]\dfrac{1}{4} \: hr[/tex]_____________________________
Rate of change in weight of ice :
[tex] \mathrm{ \dfrac{change \: \: in \: \: weight}{time \: taken} }[/tex][tex] \dfrac{6}{4} \div \dfrac{1}{4} [/tex][tex] \dfrac{6}{4} \times 4[/tex][tex]6[/tex]The rate of change in weight of Ice is 6 lbs per hour ( 6 lb / h )
_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
If 4 cups of milk is required to make 20 pancakes, how much milk will 30 pancakes require?
Hope this help!!!!!!! :)
Quantity of flour needed to make 20 pancakes =
Then , number of pancakes that can be made from 1 cup of floor :-
.
Therefore , 12 pancakes can be made from 1 cup of floor .
Solution (b) :-
Number of pancakes that can be made with 1 cup of flour = 12 pancakes
Number of pancakes that can be made with 9 cups of flour :-
= 9 × 12
= 108 pancakes
Therefore , I can make 108 pancakes with 9 cups of flour .
Solution (c) :-
Yes , I have enough flour to make 100 pancakes . I say this because :-
With one cup of flour I can make = 12 pancakes
With 9 cups of flour I can make =
= 9 × 12
= 108 pancakes
As I can make 108 pancakes with 9 cups of flour , I can conclude that I have enough flour to make 100 pancakes .
Step-by-step explanation:
Keith has 7 yards of string. He needs ⅓ yard of string for each of his puppets. How many puppets can Keith make with his string?
Answer:
the no of puppets that could be made with his string is 21
Step-by-step explanation:
Given that
There is 7 yards
And, it needs one -third of string for each of his puppets
= 7 × 3
= 21 puppets
We simply multiply the 7 yards with the 3 so that the no of puppets could come
hence, the no of puppets that could be made with his string is 21
Which expression could be used to find the distance between points (-2,8) and (7,13) on a coordinate plane?
Choose all that apply.
Answer:
A and E.
Step-by-step explanation:
Its square root of [(13-8 and 7 - - 2 ( = 7 + 2)both squared)]
OH I see there are 2 answers.
The other one is A.
Callie wrote this number to show the change in volume of a water cooler after practice. -9/10
What’s equivalent to what Callie wrote
The correct option is option B that is [tex]\frac{-9}{10}[/tex] is the same number as Callie has written to show the change in volume.
What is a fraction ?
A fraction is used to represent a portion or component of a whole. The numerator and denominator are its two parts.
It is given that Callie wrote a number to show the change in volume of a water cooler after practice which is :
= [tex]\frac{-9}{10}[/tex]
Let's check from the given options which is the correct one.
A)
- [tex]\frac{9}{-10}[/tex]
if we multiply and divide by -1 then we find that the given fraction is equal to :
= [tex]\frac{9}{10}[/tex]
This is not equal to what Callie has written.
B)
[tex]\frac{-9}{10}[/tex] is the same number as Callie has written to show the change in volume. So , this is a correct option.
C)
[tex]\frac{-9}{-10}[/tex] will be equal to [tex]\frac{9}{10}[/tex]. This is because there is negative sign in both numerator and denominator of the fraction , and they will get cancelled. So, this option is not correct.
D)
[tex]\frac{9}{10}[/tex] is not equal to [tex]\frac{-9}{10}[/tex]. To equal both we need to multiply [tex]\frac{9}{10}[/tex] by -1. Thus this option is also not correct.
Therefore , the correct option is option B that is [tex]\frac{-9}{10}[/tex] is the same number as Callie has written to show the change in volume.
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Evaluate the expression when a = -4 and x=4.
4x-a
Answer: 20
Step-by-step explanation: Substitute -4 in for a and 4 in for x. Then, simplify.
4(4) - (-4)
16 + 4
20
Hope this helped. Please mark brainliest if correct!
Answer:
4(4)-(-4)
16+4
20
Step-by-step explanation:
When you put x is 4 in the first term u will get 16 and when you add two negatives u will get a positive, hence positive 4, that is 16+4
20
What is the answer to this 3a-b;a=4b=6
Answer:
3a-b
3×4-6 solve by using the rules of BODMAS
12-6
6(ans)
Hope it helps
ellipse with vertices (-3, 4), (11, 4) and foci (-1, 4), (9.4)?
Answer:
[tex]\frac{(x-4)^2}{49}+\frac{(y-4)^2}{24}=1[/tex]
Step-by-step explanation:
Because the vertices are on the same horizontal line and so are our foci, this is our major axis for a horizontal ellipse.
Horizontal Ellipse:
[tex]\frac{(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1[/tex]
a>b
Major axis length: 2a
Minor axis length: 2b
Center: (h,k)
Foci: (h±c,k) where a²-b²=c²
We can easily find the center of the ellipse by finding the midpoint of our vertices (-3,4) and (11,4) which works out to be (4,4)
Because our foci must be (-1,4) and (9,4) this means (4±c,4) represents our foci. We can easily see that c=5 since (4-5,4) -> (-1,4) and (4+5,4) -> (9,4).
Knowing that c=5, we need to determine our values for a and b to satisfy the equation a²-b²=5². Our vertices are located on the major axis, which will help us in finding the value of a. The distance between the two vertices will be the length of the major axis, which will be |11-(-3)| = 14. Additionally, because the length of the major axis is equal to 2a, this means 2a=14 where a=7. Now we can solve for b with our equation 7²-b²=5² where b=√24.
In conclusion, our ellipse would be:
[tex]\frac{(x-4)^2}{7^2}+\frac{(y-4)^2}{\sqrt{24}^2}=1[/tex] which works out to be [tex]\frac{(x-4)^2}{49}+\frac{(y-4)^2}{24}=1[/tex]
The equation of ellipse with vertices (-3, 4), (11, 4) and foci (-1, 4), (9.4) is
(x-4)^2/49 + (y-4)^2/24 = 1
What is equation of an ellipse?The standard equation of an ellipse centered at (h, k) with a major axis parallel to the x-axis is given by:
(x-h)^2/a^2 + (y-k)^2/b^2 = 1
where the coordinates of the vertex are (h±a, 0), coordinates of co-vertex are (h, k ± b) and the coordinates of foci are (h±c, k), where a² = c² + b².
here, we have,
Because the vertices are on the same horizontal line and so are our foci, this is our major axis for a horizontal ellipse.
Horizontal Ellipse:
(x-h)^2/a^2 + (y-k)^2/b^2 = 1
where,
a>b
Major axis length: 2a
Minor axis length: 2b
Center: (h,k)
Foci: (h±c,k) where a²-b²=c²
We can easily find the center of the ellipse by finding the midpoint of our vertices (-3,4) and (11,4) which works out to be (4,4)
Because our foci must be (-1,4) and (9,4) this means (4±c,4) represents our foci. We can easily see that c=5 since (4-5,4) -> (-1,4) and (4+5,4) -> (9,4).
Knowing that c=5, we need to determine our values for a and b to satisfy the equation a²-b²=5².
Our vertices are located on the major axis, which will help us in finding the value of a.
The distance between the two vertices will be the length of the major axis, which will be |11-(-3)| = 14.
Additionally, because the length of the major axis is equal to 2a, this means 2a=14 where a=7.
Now we can solve for b with our equation 7²-b²=5² where b=√24.
In conclusion, our ellipse would be:
(x-4)^2/49 + (y-4)^2/24 = 1
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heyy! i’ll give brainliest please help thanks
Answer:
Aswan, Sudan
Step-by-step explanation:
Answer:
egypt and africa
Step-by-step explanation:
(Translate the sentence into an inequality)
Twice the difference of a number and 2 is at most -30
Answer:
2(x-2) ≤ -30
Step-by-step explanation:
2(twice) (x-2)( the difference of a number and 2) ≤ (is at most )-30
PLEASE HURRY
What value(s) for n will make this expression true?
3.5 only
0 and 3.5
In = 3.5
3.5 and -3.5
-3.5 only
Answer:
Answer:
3.5 and -3.5
Step-by-step explanation:
because of absolute value -3.5 counts as answer.
find the center and radius of the circle with equation (x + 9)^2 + (y + 5)^2 = 64
Answer:
Step-by-step explanation:
The standard form of a circle is
[tex](x-h)^2+(y-k)^2=r^2[/tex] with the really important part being the x- and the y-. If our first set of parenthesis is
[tex](x+9)^2[/tex], by the definition of the standard form of a circle, it actually is
[tex](x-(-9))^2[/tex] which is obviously negative (that's the h of the center of the circle);
If our second set of parenthesis is
[tex](y+5)^2[/tex], by the definition of the standard form of a circle, it actually is
[tex](y-(-5))^2[/tex] which is obviously negative (that's the k of the center of the circle). The radius is the square root of the constant on the right, 64. The square root of 64 is 8, so
Center (-9, -5), radius 8
Find center and radius of a circle with a diameter that has endpoints of (3,-2) and (-5,-4)
Answer:
Center: (-1,-3)
Radius: 4.12 units
Step-by-step explanation:
Hi there!
1) Find the center of the circle
When given two diameter endpoints, we can find the center of the circle by calculating for the midpoint since the center lies in the middle of the points:
Midpoint: [tex](\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2})[/tex] where the two points are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]
Plug in the diameter endpoints (3,-2) and (-5,-4)
[tex](\frac{3+(-5)}{2} ,\frac{-2+(-4)}{2})\\(\frac{3-5}{2} ,\frac{-2-4}{2})\\(\frac{-2}{2} ,\frac{-6}{2})\\(-1,-3)[/tex]
Therefore, the circle is centered at (-1,-3).
2) Find the radius of the circle
The radius of a circle is the distance between the outside edge and the center. We can find the radius by calculating for the distance between the center of the circle and one of the diameter endpoints.
Distance formula: [tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex] where the two points are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]
Plug in the center (-1,-3) and a diameter endpoint (3,-2)
[tex]d=\sqrt{(3-(-1))^2+(-2-(-3))^2}\\d=\sqrt{(3+1)^2+(-2+3)^2}\\d=\sqrt{(4)^2+(1)^2}\\d=\sqrt{16+1}\\d=\sqrt{17} \\d=4.12[/tex]
Therefore, the radius of the circle is approximately 4.12 units when rounded to the nearest hundredth.
I hope this helps!
Form 2R Coursework #1
Transformations
1. A is the point (-3,5). What are the coordinates of the image of A after a translation of 5
units to the right and 1 unit down?
Answer: 2,4???
Step-by-step explanation:
Scott and Dan each improved their yards by planting hostas and shrubs. They bought their supplies from the same store. Scott spent $150 on 9 hostas and 12 shrubs. Dan spent $41 on 4 hostas and 3 shrubs. What is the cost of one hosta and the cost of one shrub?
Answer:
shrub = $11
hosta = $2
Step-by-step explanation:
Two equations can be derived from the equation
9h + 12s = 150 equation 1
4h + 3s = 41 equation 2
s = shrubs
h = hostas
this question can be solved using simultaneous equation
Multiply equation 2 by 4
16h + 12s = 164 equation 3
Subtract equation 1 from 3
7h = 14
h = 2
substitute for h in equation 1
9(2) + 12s = 150
12s = 150 - 18
12s = 132
s = 11
hey guys its my first time using this app, i need help with this question!
b) 3/x + 4/x+2
Answer:
7/x+2
Step-by-step explanation:
2x +7/x
hope this helps
IT IS OVER ALL NOT ONLY 7!!!!!!!
Help please !??? This is kinda confusing
1. To find the original number divide the given number by the percentage ( written as a decimal)
5 / 0.67 = 7.462686567
Round the answer as needed.
2. Divide the smaller number by the larger number then multiply by 100 to get percent:
43.8 / 52 = 0.8423076923
0.8423076923 x 100 = 84.23076923%
Round answer as needed.
5. Multiply the given number by the percent( written as a decimal)
152 x 1.8 = 273.6