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xenn [34]
3 years ago
6

COLOR THEME Q ZOOM 1. The ratio of boys to girls at a dance was 9 to 5. How many girls were at the dance if there were 72 boys a

t the dance? 45 girls 90 girls 40 girls 108 girls​
Mathematics
1 answer:
BabaBlast [244]3 years ago
3 0

Answer:

72 boys=72:40

45 girls=81:45

90 girls=162:90

40 girls=72:40

etc.

Step-by-step explanation:

think of it as fractions

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Consider the system of linear equations.<br><br> 2y = x + 10<br><br> 3y = 3x + 15
Art [367]
I hope this helps you

5 0
3 years ago
Let f(x)=1/x and g(x)=x^2-2. What is (fog)(-3)?
Elenna [48]

Answer:

Its value is 1/7.

I hope this will help you.

3 0
3 years ago
What is 2 5/6 + 7/4 <br> A. 2 2/5<br> B. 3 1/5<br> C. 3 4/5<br> D. 4 7/12
Mazyrski [523]

Answer:

D

Step-by-step explanation:

2 5/6=2 10/12

7/4=1 3/4= 1 9/12

2 10/12+1 9/12= 4 7/12

you can just change the denominators to the same which is 12. Hope you appreciate it!

7 0
3 years ago
Need help and will be giving Brainliest
Katena32 [7]

Answer:

x-intercept (s):

For this case h (x) = 0

x2 - 2x - 8 = 0

(x-4) * (x + 2) = 0

x1 = 4

x2 = -2

y-intercept:

For this case x = 0

h (0) = (0)2 - 2 (0) - 8

h (0) = - 8

vertex:

We derive the equation:

h '(x) = x2 - 2x - 8

h (x) = 2x - 2

We match zero:

2x-2 = 0

x = 2/2

x = 1

We evaluate the function for x = 1

h (1) = (1)2 - 2 (1) - 8

h (1) = 1 - 2 - 8

h (1) = -9

The vertex is:

(1, -9)

axis of symmetry of the function:

x = 1

Step-by-step explanation:

hope it helps

6 0
3 years ago
I am a 3 digit number that has a 2 in the hundreds place. I am divisible by 3,4, and 5. What number am I?
Nastasia [14]
4x60=240
3x80=240
5x48=240
Answer 240
Hope that helps!


4 0
3 years ago
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