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stich3 [128]
3 years ago
15

Please help! 15 points!!

Mathematics
1 answer:
svetoff [14.1K]3 years ago
3 0

Answer:

Step-by-step explanation:

the last one

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At the 6th grade school dance, there are 132 boys, 89 girls and 14 adults.
S_A_V [24]

Answer:

132:189 and

132 to 89

Step-by-step explanation:

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3 0
2 years ago
Satellite dishes are shaped like parabolas to optimally revive signals. The cross section of a satellite dish can be modeled by
Anna11 [10]

The cross section of the satellite dish is an illustration of a quadratic function

The quadratic function that models the cross-section is y = 1/6(x^2 - 9)

<h3>How to determie the equation of the cross-section?</h3>

The given parameters are:

Width = 6 feet

Depth = 1.5 feet

Express the width the sum of two equal numbers

Width = 3 + 3

The above means that, the equation of the cross section passes through the x-axis at:

x = -3 and 3

So, we have:

y = a(x - 3) * (x + 3)

Express as the difference of two squares

y = a(x^2 - 9)

The depth is 1.5.

This is represented as: (x,y) =(0,-1.5)

So, we have:

-1.5 = a(0^2 - 9)

Evaluate the exponent

-1.5 = -9a

Divide both sides by -9

a = 1/6

Substitute 1/6 for a in y = a(x^2 - 9)

y = 1/6(x^2 - 9)

Hence, the quadratic function that models the cross-section is y = 1/6(x^2 - 9)

Read more about quadratic functions at:

brainly.com/question/1497716

7 0
2 years ago
A pair of shoes cost $220. You have a 20% coupon and the tax is 8.25%. What is the total cost of the shoes?
Tom [10]

Answer: 190.52

Step-by-step explanation:

5 0
3 years ago
What is the lateral surface area on a square pyramid with base edges of 10 and the height of 12
8_murik_8 [283]

Answer:

joe mama

Step-by-step explanation:

7 0
3 years ago
If h(x)=6-x what is the value of (hxh)(10)?
Ghella [55]

Answer:

16

Step-by-step explanation:

h(x) × h(x) = (6 - x)²

(h × h)(10) = (6 - 10)² = (- 4)² = 16

5 0
3 years ago
Read 2 more answers
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