Answer:
C. 41
Step-by-step explanation:
We want to find the number of odd integers from 10 to 51.
The first odd integer from 10 to 51 is 11; the second is 13; the third is 15; and so on until 51. So, our list looks like this:
11, 13, 15, ... , 51
We need to figure out how many numbers there are. Let's add 1 to all of them:
11 + 1, 13 + 1, 15 + 1, ... 51 + 1
12, 14, 16, ... , 52
Now, let's divide by 2:
12/2, 14/2, 16/2, ... 52/2
6, 7, 8, ... , 26
Finally, subtract 5 from them:
6 - 5, 7 - 5, 8 - 5, ... , 26 - 5
1, 2, 3, ... , 21
There are 21 odd integers, so x = 21.
The even integers from 10 to 51 start with 12, 14. They end with 50. So, we have:
12, 14, ... 50
Let's use a similar method as above. Divide by 2:
12/2, 14/2, ... , 50/2
6, 7, ... , 25
Subtract 5:
6 - 5, 7 - 5, ... , 25 - 5
1, 2, 3, ... , 20
There are 20 even integers, so y = 20.
Then, x + y = 21 + 20 = 41.
The answer is thus C.
~ an aesthetics lover
What is the value of xx) = 9^x when x= -2?
A. 1/81
B. 81
C. 1/81
D. 18
Answer:
C. [tex]9^{-2} = \frac{1}{81}[/tex]
Step-by-step explanation:
Given
[tex]9^{x}[/tex]
Required
Find the expression where x - 2
[tex]9^{x}[/tex]
Substitute 2 for x
[tex]9^{-2}[/tex]
From law of indices which states
[tex]a^{-b} = \frac{1}{a^b}[/tex]
So, the expression becomes
[tex]9^{-2} = \frac{1}{9^2}[/tex]
Expand the denominator
[tex]9^{-2} = \frac{1}{9 * 9}[/tex]
[tex]9^{-2} = \frac{1}{81}[/tex]
Hence, [tex]9^{x}[/tex] is [tex]\frac{1}{81}[/tex] when x = 2
I dont understand the problem
Answer:
equation of a line:
y = mx+c
1) find the gradient, m
[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]
[tex]m = \frac{ - 4 - ( - 4)}{ - 10 - 1} [/tex]
[tex]m = 0[/tex]
2) find y-intercept, c using coordinate (1,-4)
y = mx + c
-4 = 0(1) + c
c = -4
the equation of line:
y = mx+c
y = 0(x) + c
y = c
y = -4
what is y=2/3x-4 graphed
Answer:
Please see attached
Step-by-step explanation:
a particular dam contains approximately 1,500,000,000,000 cubic feet of water. for a week long spike flood, water was released at a rate of 25,900 cubic feet per second. how much water was released during the flood?
what percentage of the dam was released during the flood?
Answer:
Total released water = 15,664,310,000 cubic feet
Total % of released water = 1.04%
Step-by-step explanation:
Given:
Water capacity = 1,500,000,000,000 cubic feet
Total seconds in a week = 7 × 24 × 60 × 60
Per seconds release amount = 25,900 cubic feet
Computation:
Total released water = 25,900 × 7 × 24 × 60 × 60
Total released water = 15,664,310,000 cubic feet
Total % of released water = 15,664,310,000 cubic feet / 1,500,000,000,000
Total % of released water = 0.0144
Total % of released water = 1.04%
PLS HELP ME!!!!! Find the sum of the first 100 terms of the arithmetic sequence with the first term 2 and the common difference 5.
Answer:
24,950.
Step-by-step explanation:
You can use the arithmetic series formula (a sequence is the list of numbers; a series is the summation of the list).
To find the sum...
(100 / 2) (2 * 2 + (100 - 1)5) = 50 * (4 + 99 * 5) = 50 * (4 + 495) = 50 * 499 = 24950.
Hope this helps!
Answer:
The sum of the first 100 terms of the arithmetic sequence is 24,950.
Step-by-step explanation:
Sn (sum of the first n terms of an AP) is given by n/2(2a + (n-1)d)
Where
n is the number of terms
a is the first term
d is the common difference
S100 = 100/2(2×2 + (100-1)5) = 50(4 + 99×5) = 50(4 + 495) = 50(499) = 24,950
HELP!
After a rotation, A(-3, 4) maps to A'(4, 3), B(4, -5) maps to B'(-5, -4), and C(1,6) maps to C'(6, -1). Which rule
describes the rotation?
R0, 90°
R0, 180°
Ro, 270°
RO, 360°
270 degree counterclockwise rotation around the origin
=============================================================
Check out the diagram below. In the diagram, I only focus on points A and A'.
We have A = (-3,4) move to A ' = (4, 3). We see the x and y coordinates swap places. Then the new second coordinate -3 becomes positive, or it has flipped sign. So the rule applied here is [tex](x,y) \to (y,-x)[/tex] which describes a 90 degree clockwise rotation; which is equivalent to a 270 degree counterclockwise rotation
The other points follow the same idea.
Answer:
c
Step-by-step explanation:
This set of 3 numbers are measurements of a right triangle. 10,8,6
True
False
Answer:
True
Step-by-step explanation:
**plug it in using the Pythagorean Theorem**
6^2+8^2= 10^2
36+64=100
100=100 (true)
Answer:
True
Step-by-step explanation:
Pythagorean Theorem: a² + b² = c²
We can prove that it is a right triangle by using the Pythagorean Theorem. We have the hypotenuse as 10 and our legs as 8 and 6:
8² + 6² = 10²
64 + 36 = 100
100 = 100
So, 6-8-10 is a Pythagorean Triple.
80g of a 35% salt solution
Answer:
The total weight is 80g, this is equal to the weight of the salt in the mixture plus the weight of the water in the mixture.
Ws = Weight of the salt
Ww = Weight of the water.
Then:
Ww + Ws = 80g
and the solution is 35% salt, so we have:
Ws/80g = 0.35
We must solve the system of equations, we can write the second equation as:
Ws = 80g*0.35 = 28g
Then we have 28 grams of salt, and the other 62g must be of water.
Step-by-step explanation:
Let x represent the weight of the salt
Let y represent the weight of the water
We know x + y = 80g total
If the salt solution is 35%, we can write the following equation:
x/80g = 0.35
x = 80g x 0.35 = 28
28 grams
Simplify 27/25 A. 1/7 B. 3/9 C. 3/5 D. 9/15 I will mark you as brainliest
Answer:
I think it's D
Step-by-step explanation:
On a coordinate plane, triangle 1 is reflected across the x-axis to form triangle 4, is reflected across a diagonal to form triangle 3, is reflected across the y-axis to form triangle 2. Use the figure to complete the statements. Triangle 1 is the image of triangle 2 reflected over the . Triangle 2 is the image of triangle 3 reflected over the . Reflecting triangle 4 over the y-axis results in triangle .
Answer: Triangle 1 is the image of triangle 2 reflected over the y-axis
Triangle 2 is the image of triangle 3 reflected over the x-axis.
Reflecting triangle 4 over the y-axis results in triangle 3.
Step-by-step explanation:
Triangle 1 is across from triangle 2. If you make the triangles bisect, they touch the y-axis.
Triangle 2 is above triangle 3. If you make the triangles bisect, they touch the x-axis.
If you "mirror" triangle 4 over the y-axis, you make the same shape then rotate it 90 degrees and put it the same distance from the y-axis.
I can't really explain it that good without touching the picture but its kinda just a mirror image.
You translate it (a congruent shape that is on a different axis and is the same distance from that axis) and rotate is 90 degrees
Answer:
y-axis
x-axis
3
Step-by-step explanation:
Solve the inequality.
2(4+2x)>5x+5
O x<-2
O x>-2
O x<3
O x>3
Answer:
the answer is X<3
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
PLEASE HELP ME!!! :'(
1. Create a data set with at least 5 values.
2. Write instructions that tell a friend how to find the mean absolute deviation of your data set.
Answer: KINDLY CHECK EXPLANATION
Step-by-step explanation:
Given the data:
1) dataset:
My data(x) : 2, 4, 6, 8, 10
2) to calculate the mean absolute deviation of the data above :
Step 1: Find the mean (m) of the dataset (my data)
Mean(m) = sum of values in my data / number of observations in my data (n)
m = (2+4+6+8+10) / 5
m = 30 / 5 = 6
The mean absolute deviation(MAD) :
Sum of The absolute value of the difference between values in my data and the mean value (m) Divided by the number of observations.
MAD = (Sum of |x - m|) / n
MAD = (|2-6| + |4-6| + |6-6| + |8-6| + |10-6|) / 5
MAD = (4 + 2 + 0 + 2 + 4) / 5
MAD = 12 / 5
MAD = 2.4
Massachusetts has a population of over 6,550,000 people. The maximum number of hairs that can grow on a human head is 500,000. Prove that there are at least 14 residents of Massachusetts who have the same number of hairs on their heads.
Answer:
So, basically, you can do this:
500,001*14<6,550,000.
This works because there is one person that can have 0 hairs, 1 hair, 2 hair and so on until we reach 500,000 hairs. Then, there has to be a repeat. So, we can do this fourteen times. Then, we can see that there are at least 14 people with a certain amount of hairs.
5x+2y=57 what is x and y equal to?
ffefefertjuylijhq DS3NUFHUFH4UFUFHUFUEFNUEFNUEFN
Whích quadratic inequality does the graph below represent?
у
5
4
3
2
1
→
wa-
5-32
12
3
5
2
Answer:
The third option
Step-by-step explanation:
first, you can eliminate the 2nd and the 4th option because the vertex of the graph is located at -3, and not 3. The reason it is not the 1st option is, because of the greater than or equal to sign, this inequality actually shows the white area.
Therefore, leaving the 3rd option. The y-intercept is correct, it is -3. The sign is also correct, because on the axis of the quadratic, -3 is the highest possible y-intercept. So y has to be less than or equal to -3.
Hope this helps! :D
Which best describes the relationship between the line that passes through the points
Answer:
Neither perpendicular nor parallel.
Step-by-step explanation:
To find the answer, you just need to find the slopes of each line.
The slope of the line with points at (-6, 5) and (-2, 7) would be (7 - 5) / (-2 + 6) = 2 / 4 = 1/2.
The slope of the line with points at (4, 2) and (6, 6) would be (6 - 2) / (6 - 4) = 4 / 2 = 2.
They are most definitely not the same line.
They are not perpendicular, either, since although they are [eek I forgot the term for it] opposites, they are both positive. To be perpendicular, one slope must be negative and the other positive.
They are not parallel, since the slopes are not the same.
So, the relationship between the lines are that they are neither parallel nor perpendicular.
Hope this helps!
Lauren opened a lemonade stand on her street. It costs her $8.00 to buy the supplies each day, and she sells lemonade for $2.50 a cup. If she wants to make at least $175.00 in profits (sales - expenses) each day, what is the minimum number of cups of lemonade Lauren needs to sell? Input your answer as a whole number.
Answer: 74 Cups
Step-by-step explanation:
What is the question asking?
The question is asking for the minium number of cups Lauren needs to sell
Total in profits they need to make?
They need to make 183$ because 175 + 8 = 183
183 / 2.5 = 73.2
because we need to sell at least 183$ worth we need to sell 74 cups or else we will not be making it all the way there.
<!> Brainliest would be appreciated! <!>
Find the area of the triangle. a) 225 units2 b) 75√3 units2 c) 150√3 units2 d) 27.5√3 units2
Answer:
Thus, area of triangle is [tex]225/\sqrt{3}[/tex]
Step-by-step explanation:
Area if triangle is given by 1/2( base*height)
Given
Height = 15 units
also one angle is given as 30 degrees
we know Tan of any angle is ratio of perpendicular and base
[tex]tan\alpha = perpendicular /base[/tex]
lets calculate tan 30 in the given triangle
we will take the smaller triangle containing angle 30 degrees and right angle
perpendicular will be half of base of triangle
base will be side with length 15 units
tan30 = perpendicular/15
[tex]1/\sqrt{3} = perpendicular/15\\=> perpendicular = 15/\sqrt{3}[/tex]
Thus, half of base of full triangle is [tex]15/\sqrt{3}[/tex]
so full base will be [tex]15*2/\sqrt{3} = 30/\sqrt{3}[/tex]
Full full triangle
height = 15 units
base = [tex]15*2/\sqrt{3} = 30/\sqrt{3}[/tex]
Thus, area of triangle is [tex]1/2* 30/\sqrt{3}*15= 225/\sqrt{3}[/tex]
Which is an equation of a direct proportion?
A.y=1/3x−2
B.y=3/x
C.y=−3x+4
D.y=−3x
Step-by-step explanation:
As someone has thankfully answered your question. I'll just try to explain that concept to you.
In direct proportion, as the first variable increases or decreases, the second variable also increases or decreases. In mathematical statements, it can be expressed as y = kx. This reads as “y varies directly as x” or “y is directly proportional as x” where k is constant in the equation.
So yes the answer is D
y = -3x
Answer:
D
Step-by-step explanation:
y = -3x
find the area of the figure below. round your answer to the nearest tenth
Step-by-step explanation:
Area 1 = the rectangle
8×3=24cm²
Area 2= semi circle
3.14r² 314/100×4×4 = 50.24cm²
add. 24+50.24 = 74.24cm² ( 10th)
= 74.2Asap help!!!!!! Which relations are functions? Select Function or Not a function for each graph.
Answer:
1st Graph: Function
2nd Graph: Function
3rd Graph: Not a function
4th Graph: Not a function
Step-by-step explanation:
We can determine if a graph is a function or not using the Vertical Line Test. Since we see that 1 and 2 pass but 3 and 4 pass, 1 and 2 are functions while 3 and 4 are not.
What is the complete factorization of the polynomial below?
x^3 - 3x^2 + x-3
O A. (x-3)(x + 1)(x - )
O B. (x-3)(x- )(x-1)
O C. (x+3)(x-)(x-1)
O D. (x+3)(x+)(x-)
Answer:
(x-3)(x+i)(x-i)
Step-by-step explanation:
khan
The complete factorization of the polynomial is A = ( x + i ) ( x - i ) ( x - 3 )
What is Factorizing?Brackets should be expanded in the following ways to factorize an expression
For an expression of the form A = a ( b + c ) , the expanded version is given by A = ab + ac, i.e., multiply the term outside the bracket by everything inside the bracket
For an expression of the form A = ( a + b ) ( c + d ) , the expanded version is given by A = ac + ad + bc + bd, in other words everything in the first bracket should be multiplied by everything in the second.
Given data ,
Let the polynomial equation be represented as A
Now , the value of A is
A = x³ - 3x² + x - 3 be equation (1)
On simplifying , we get
A = ( x³ - 3x² ) + ( x - 3 )
Taking x² as the common term , we get
A = x² ( x - 3 ) + ( x - 3 )
Now , on factorizing the equation , we get
A = ( x² + 1 ) ( x - 3 )
where the value of ( x² + 1 ) = x² - i²
So , A = ( x² - i² ) ( x - 3 )
A = ( x + i ) ( x - i ) ( x - 3 )
Therefore , the value of A is ( x + i ) ( x - i ) ( x - 3 )
Hence , the factorized equation is A = ( x + i ) ( x - i ) ( x - 3 )
To learn more about factorizing click :
https://brainly.com/question/804076
#SPJ7
Circle F is congruent to circle J, and ∠EFD ≅ ∠GJH. Circles F and J are congruent. Line segments F E and F D are radii. A line connects points E and D to form a triangle. Line segments J H and J G are radii. A line connects points H and G to form a triangle. Angles D F E and G J H are congruent. m∠DFE = 80°. What is the measure of arc Arc G H? °
Answer:
[tex]mGH=80^\circ[/tex]
Step-by-step explanation:
Circle F and J are congruent.
[tex]\angle DFE \cong \angle GJH[/tex]
Given that: m∠DFE = 80°
DFE is the central angle of the circle F.
The measure of arc GH is equal to the central angle of Circle J.
Since both circles are congruent
[tex]mGH=\angle DFE = 80^\circ[/tex]
The measure of arc GH is 80 degrees.
Answer:
Arc GH=80°
Step-by-step explanation:
Edge 2020
Does anyone know how to do all of this
Answer:
price paid of speakers= £40.5
price paid of headphones=£ 5.6
price paid of book=£6.65
price paid of mobile phone=£42
price paid of mouse=£ 15.75
price paid of DVD=£11.05
solution,
1. Cost of speakers:
Discount percent=10 %
Marked price=£45
discount amount= discount % of MP
=10% of 45
=£4.5
Selling price= MP - discount amount
=£45-£4.5
=£ 40.5
2. cost of headphones:
discount amount= discount% of MP
=20% of 7
=£1.4
Selling price= MP- Discount amount
=£7-£1.4
=£ 5.6
3. cost of books:
discount amount= discount percent of MP
= 30% Of 9.50
=£ 2.85
selling price= MP- Discount amount
= £ 9.50-£2.85
=£ 6.65
4. cost of mobile phone:
discount amount= discount% of MP
=40% of 70
=£ 28
selling price= MP- Discount amount
=£70-£28
=£ 42
5. cost of mouse:
discount amount= discount% of MP
= 25% of 21
=£ 5.25
selling price= MP- Discount amount
=£21-£5.25
=£ 15.75
6. cost of DVD:
discount amount= discount % of MP
= 15% of 13
= £ 1.95
selling price= MP- discount amount
=£ 13 -£ 1.95
=£ 11.05
Hope this helps...
Good luck on your assignment..
what is the volume of a right trianular prism with the dimesions of 15 11 17
Answer:
1402.5 Cubic Units
Step-by-step explanation:
Volume of a Triangular Prism: V = [tex]\frac{1}{2}bhl[/tex]
b - base
h - height
l - length
15 is the height, 17 is the length, and 11 is the width (assuming which is the base).
[tex]V=0.5 * (11 * 15 * 17) \\V=0.5*2085\\V=1402.5[/tex]
The volume of the prism should be 1402.5 cubic units.
Please help ASAP
These box plots show the number of electoral votes won by the democratic and republican candidates for the elections 1984 through 2012
Answer:
A.
Step-by-step explanation:
The interquartile range for republicans is 185.5. The interquartile range for democrats is 186.5.
367.5 - 181 = 186.5
356 - 170.5 = 185.5
Answer:
A
Step-by-step explanation:
12 points!
A point located at (3,-2) is translated right 3 units and down 4 units. What are the coordinates of the image?
(0-2)
(6,-6)
(6,2)
(0,-6)
Answer: (6,-6)
Step-by-step explanation: so, the x coordinate before is 3, and traveling right is a positive number. So to find the x coordinate after, add 3 because it is going right 3 units, which is 6. The y coordinate was -2 before. Going down in terms for the y coordinate means negative, or to subtract, so the y coordinate after would be -6, because -2+4=-6
Hope you understand :)
Which of the following is a solution of the system
x – 2y < 4 and y > – 2x – 5?
1. (1, -4)
2. (-8, 2)
3. (0,0)
4. (-3,0)
Answer:
Option 3.
Step-by-step explanation:
The given inequalities are
[tex]x-2y<4[/tex]
[tex]y>-2x-5[/tex]
If (a,b) is solution of given system of inequalities, then the above inequalities must be satisfy by the point (a,b).
For point (1,-4),
[tex](1)-2(-4)<4\Rightarrow 9<4[/tex] False
[tex]-4>-2(1)-5\Rightarrow -4>-7[/tex] True
Since, first inequality is false for (1,-4) point, therefore (1,-4) is not the solution.
For point (-8,2),
[tex](-8)-2(2)<4\Rightarrow -12<4[/tex] True
[tex]2>-2(-8)-5\Rightarrow 2>11[/tex] False
Since, second inequality is false for (-8,2) point, therefore (-8,2) is not the solution.
For point (0,0),
[tex](0)-2(0)<4\Rightarrow 0<4[/tex] True
[tex]0>-2(0)-5\Rightarrow 0>-5[/tex] True
Since, both of inequalities are true, therefore (0,0) is a the solution.
For point (-3,0),
[tex](-3)-2(0)<4\Rightarrow -3<4[/tex] True
[tex]0>-2(-3)-5\Rightarrow 0>-11[/tex] False
Since, second inequality is false for (-3,0) point, therefore (-3,0) is not the solution.
Hence, option 3 is correct.
Which of the following ratio is equivalent to this ratio: 4:5
1)8:5
2) 8:16
3) 8:10
4) 2:3
Answer:
3) 8:10
Step-by-step explanation:
You can simply multiply the entire ratio by 2 to get your answer:
2(4:5)
2(4):2(5)
8:10
how many tiles 4 inches on a side should be used to cover a portion of a wall 56 in Long by 32 in high