Step-by-step explanation:
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A class of 23 pupils has six more boys than girls. Let n = the number of girls. Select the equation that most accurately depicts the word problem.
n + (6 - n ) = 23
n + ( n + 6) = 23
n + 23 = n + 6
Answer:
Step-by-step explanation:
the first one becouse of the ratio 6:1
we know it cant be c there is no possible way so
its either a or b
if n=number of girls
6- girls and plussing will give you the correct answer
it is minus becouse of the ratio adding will give you more than the value
and minus will give exact value
Answer: n + ( n + 6) = 23
Sonia graphs the equations y = –x2 + 4x and y = x – 4 to solve the equation –x2 + 4x = x – 4. Her graph is shown below.
Answer:
C.–1 and 4
Step-by-step explanation:
Solving the equations y = –x² + 4x and y = x – 4
–x² + 4x = x – 4
x² - 4x + x = 4
x² - 3x = 4
x² - 3x + (3/2)² = 4 + (3/2)²
(x - 3/2)² = 4 + 9/4
= 6.25
x - 3/2 = √6.25 or x - 3/2 = -√6.25
x = 2.5 + 1.5 x = -2.5 + 1.5
= 4 = -1
Answer: C -1 and 4
Step-by-step explanation:
Edge
Solve for 2.
- 6x + 2x = -4
6
4
1
-6
Help me pleasee I’ll give you brainlst
Answer:
378ft ^2
Step-by-step explanation:
81/2 = 40.5, * 4 = 162
12*18 = 216
162 + 216 = 378
Are these two lines parallel, perpendicular or neither
Answer:
parallel
Step-by-step explanation
Are the events "selecting a female" and "selecting a students who has brown eyes" independent?
Answer:
No, the events are not independent.
Step-by-step explanation:
Suppose that there are two events, A and B.
Such that first happens the event A and then the event B.
If the outcome of event A affects the probabilities for the different outcomes of event B, then the events are dependent.
In this case, if we have only the event "selecting a student who has brown eyes" (at random)
The probability is equal to the quotient between the total number of students with brown eyes, and the total number of students, then this probability is:
P = 91/200 = 0.455...
Now, if we first impose the "selecting a female", now when we want to select a student with brown eyes we will look only at the female students.
In this case, there are 32 with brown eyes and a total of 90 female students, then the probability of selecting a female with brown eyes at random is:
P = 32/90 = 0.355...
So the probability is different, which means that the events "selecting a female" and "selecting a student who has brown eyes" are not independent.
What are the domain and range of f(x)=3(x−15)2+27? It is a drag an drop.
Answer 1. All real numbers
Answer 2. x≥15
Answer 3. f(x)≥15
Answer 4. x≥27
Answer 5. f(x)≥27
Answer:
1. All real numbers
Step-by-step explanation:
Simplifies to f(x) = 6x - 63, it will cross all x and y values.
The domain and range of the given function are all real numbers
We have given that,
f(x)=3(x−15)2+27
f(x)=(3x-45)2+27
f(x)=6x-90+27
What is the domain?The domain is the set of points at which the function is defined.
What is the range?
The range of a set of data is the difference between the largest and smallest values. The difference here is specific, the range of a set of data is the result of subtracting the sample maximum and minimum.
To f(x) = 6x - 63, it will cross all x and y values.
To learn more about the domain range visit:
https://brainly.com/question/1942755
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What can you tell me about 1/3 of 30
Answer:
10
Step-by-step explanation:
1/3 of 30 is 10 because 3 times 10 is 30
Answer: i could tell you that it is equaled to 10
Step-by-step explanation:
Mark me as brainliest plus extra points
Which graph shows a proportional relationship between x and y?
Answer:
B
Step-by-step explanation:
The one that goes through the middle
Hope this helps
Consider the glven solids with the dimensions shown. Which solids are similar?
A. only figure 1 and figure 2
B. only figure 1 and figure 3
C. only figure 2 and figure 3
D. all three figures
Answer:
A) only figure 1 and figure 2
Step-by-step explanation:
Answer: Choice A) only figure 1 and figure 2
===========================================================
Explanation:
Let's assume that figure 2 is similar to figure 3.
If this is the case, then the horizontal portions would divide to 30/15 = 2, showing that figure 3 has sides that are twice as long compared to figure 2. But then notice that the vertical sides divide to 36/24 = 1.5, which doesn't match with the previous result of 2.
Figures 2 and 3 cannot be similar for that reason.
Also, figures 1 and 3 are not similar either. Note the horizontal portions divide to 30/10 = 3 while the vertical portions divide to 36/16 = 2.25; the results 3 and 2.25 don't match.
We eliminate answers B, C and D. The only thing left is choice A.
-------------------
To verify choice A is true, we divide each corresponding piece like so
Horizontal: 15/10 = 1.5Vertical: 24/16 = 1.5Slanted: 12/8 = 1.5Each division leads to the same result of 1.5, meaning that figure 2's side lengths are 1.5 times longer than the corresponding side lengths of figure 1. So this confirms that figure 1 is similar to figure 2.
Cube if any odd number is
Answer:
Cube of any odd number is odd.
The cube of odd numbers are always odd. A perfect cube does not end with 2 zeroes. The given statement is false. There are perfect cubes like 8 and 1728 that end with 8.
5x1 1/3
plz help me thank you so much
Answer:6.666
Step-by-step explanation:
Step-by-step explanation:
[tex]5 \times \frac{11}{3} [/tex]
[tex] = \frac{55}{3} [/tex]
[tex] = 18 \frac{1}{3} (ans)[/tex]
4x+5-x=10+3x+4
solution
Answer:
9
Step-by-step explanation:
4x-x=3x
3x±5=10±3x±4
10±4=14
14±3x
3x±5=14±3x
3x-3x=14-5
3x-3x=0
14-5=9
Jessica is selling girl scout cookies and recorded how many she sold in one afternoon. She sold Thin Mints, Trefoils, and Samoas.
2a. She sold 54 boxes of Thin Mints, which was 60% of the total number she sold. How many total boxes did she sell? (3 points – 2 pts for correct answer, 1 pt for showing work)
2b. If 60% of the cookies sold were Thin Mints and 10% of the cookies sold were Samoas, how many boxes of Trefoils did she sell? (3 points – 2 pts for correct answer, 1 pt for showing work)
Answer:
a) 90 boxes
b) 27 boxes
Step-by-step explanation:
Please see the attached picture for the full solution.
Answer:
a-90
b-27
Step-by-step explanation:
Math questions plss mark u brainlist
Answer:
4
Step-by-step explanation:
Hello There!
The slope is the change in y over the change in x
In the table as y goes up 4 x goes up 1
so the slope is 4/1 or 4
Which of the following equations has the solutions shown in the graph?
On a coordinate plane, a parabola opens up and goes through (negative 3, 0), has a vertex around (negative 1, negative 6), and goes through (2, 0).
a.
y = x squared minus 3 x + 2
c.
y = x squared + x minus 6
b.
y = x squared + 2 x minus 3
d.
y = x squared minus x minus 6
Please select the best answer from the choices provided
A
B
C
D
Answer:
the answer a
Step-by-step explanation:
Robin has a collection of dimes, nickels and quarters. He has 4 times as many dimes as nickels. He has 20 more quarters than nickels. The
ratio of the number of dimes to the number of quarters is 3:2. Which equation can be used to calculate the number of nickels, n, Robin
has?
OA
Exh
8:33
acer
Answer: Robin has 50 nickels, 60 dimes, and 120 quarters.
Step-by-step explanation:
What type of slop..
Undefined
Positive slope
Zero slope
Negative slope
Answer:
zero slope
Step-by-step explanation:
Answer:
it's a zero slope
Step-by-step explanation:
Jet bought a computer that was 20% off. If the original price of the computer was $785, how much did Jet save? How much did Jet pay?
785·20%=157
785-157=628
Answer:
You will pay $628 for a item with original price of $785 when discounted 20%. In this example, if you buy an item at $785 with 20% discount, you will pay 785 - 157 = 628 dollars.
Anyone help ASAP!!!!
Select the statement that describes this expression: 10 + fraction 1 over 4x (5 + 3) − 3.
10 more than fraction 1 over 4 of the sum of 5 and 3, then subtract 3
fraction 1 over 4 of 10 times the sum of 5 and 3, minus 3
3 more than 3 plus 5 multiplied by fraction 1 over 4, then add 10
10 times fraction 1 over 4 plus 3 and 5, minus 3
Answer:
10 more than fraction 1 over 4 of the sum of 5 and 3, then subtract 3
Step-by-step explanation:
Can't be the other ones
Answer:
10 more than fraction 1 over 4 of the sum of 5 and 3, then subtract 3
Step-by-step explanation:
I tried its correct.
How many real sixth roots does -64 have?
Answer:
x=5 and -5
Step-by-step explanation:
hope this helps
(T x 2) - 14 For t=46
Answer:
78
Step-by-step explanation:
Use PEMDAS for questions like these (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction) It gives an order in which you should solve the problem. In this case, put 46 instead of T to get (46*2)-14. If we look at PEMDAS, it shows that we need to do what is in the parenthesis first. So, 46x2=92. You get 92-14. Solve that and you get 78
Jasmine will buy the same number of stamps every month to add to a stamp collection her grandfather gave her. The table shows the number of stamps Jasmine will have at the end of x months. How many stamps was Jasmine given, and how many stamps will she buy every month?
Jasmine was given 65 stamps, and she will buy 5 stamps every month.
Jasmine was given 60 stamps, and she will buy 65 stamps every month.
Jasmine was given 5 stamps, and she will buy 60 stamps every month.
Jasmine was given 60 stamps, and she will buy 5 stamps every month
Answer:
Option (4)
Step-by-step explanation:
If we draw a graph against x(Number of months) and y(Number of stamps),
We will get a straight line.
Let the equation of straight line be,
y = mx + b
Here, m = Stamps purchased per month
b = Jasmine was given stamps initially
From the table attached,
m = [tex]\frac{70-65}{2-1}[/tex] = 5 stamps per month
Therefore, equation of the line will be,
y = 5x + b
Since, a point (1, 65) lies on this line,
65 = 5(1) + b
b = 60
That means she was given 60 stamps initially.
Option (4) will be the answer.
remember that percentages are based on one-hundredths. the value 100% one-hundredths or 100/100. the value of 50% equals 50/100 which can also be written as a decimal 0.50%. The value of 5% equals 5/100 or 0.005. Convert the following percentages into one-hundredths and then into a decimal: 75%, 20%, 0.8%?
Answer:
75/100, 20/100, 8/1000
0.75% , 0.2% or 0.20%, 0.008%
Step-by-step explanation:
im sorry if its wrong,its been a while since i did percentages
Among the following, which one is not in similarity theorem.
A. SSS similarity theorem
B. SS similarity theorem
C. SAS similarity theorem
D. AA similarity theorem
Answer:
If two triangles are similar it means that all corresponding angle pairs are congruent and all corresponding sides are proportional. However, in order to be sure that two triangles are similar, you do not necessarily need to have information about all sides and all angles.
please help me with my math look at picture
If a cereal box (rectangular prism) has the di-
mensions of 6 inches by 4 inches by 14 inches,
what is the volume?
Answer:
336
Step-by-step explanation:
Find the volume of a rectangular prism is V = Length * width * height = 6*4*14 = 336 inch^3
If it is helpful, plz give me Brainliest.
Answer:
The answer would be (C) 336
Step-by-step explanation:
V = l x w x h
Need help with this asap help me please!!!
Answer:
i think it is 6
Step-by-step explanation:
The length of a rectangle is 5 yd less than twice the width, and the area of the rectangle is 33 yd?. Find the dimensions of the rectangle.
Answer:
Step-by-step explanation:
L=2W-5
A=LW, using L from above gives you
A=(2W-5)W
A=2W^2-5W
2W^2-5W-A=0, since A=33yd^2
2W^2-5W-33=0
2W^2+6W-11W-33=0
2W(W+3)-11(W+3)=0
(2W-11)(W+3)=0, since W>0
W=11/2
W=5.5yd, since L=2W-5
L=6yd
So the dimensions are W by L, 5.5yd by 6yd