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Yuliya22 [10]
3 years ago
11

Which expression is equivalent to 4(3+ 5) - 3 • 9^2?

Mathematics
1 answer:
Molodets [167]3 years ago
7 0

Answer: D

Is your answer.

Glad I could help!

Step-by-step explanation:

4 × 3 = 12 + 5 = 17 - 3 = 14 × 9² = 1134

A. -712

B. -22

C. -211

D. 1134.

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Laura buys four BDs at $14 each and six CDs at $12 each. What is her change from $120?
castortr0y [4]

BDs

4 \times 14 = 56

CDs

6 \times 12 = 72

Total

56 + 72 = 128

There is no change from $120 because she doesn't have enough money.

8 0
3 years ago
Age (years) Population Under 15 2600 15 - 64 16000 Over 64 4000 Calculate the child dependency ratio from the chart above. Round
Brums [2.3K]

Answer:

16.25%

=0.163 (correct to 3 decimal places)

Step-by-step explanation:

The child dependency ratio of a population is defined as the number of children (Under 15 years) divided by the working-age population (15–64 years old).

\mathrm{ Child}\;\mathrm{ dependency}\;\mathrm{ ratio}=\dfrac{{\mathrm{ Population}\,\left( \text{Under 15} \right)}}{{\mathrm{ Population}\,\left( {15-64} \right)}}\times 100

From the given table:

Population Under 15 years = 2600

Population of the working class (between 15-64) = 16000

Therefore:

\mathrm{ Child}\;\mathrm{ dependency}\;\mathrm{ ratio}=\dfrac{2600}{16000}\times 100\\\\=16.25\%

=0.163 (correct to 3 decimal places)

3 0
3 years ago
PLS HELP DUE SOON SHOW YOUR WORK!
Vladimir79 [104]

9514 1404 393

Answer:

  • 615.8 square feet
  • 9 truckloads

Step-by-step explanation:

The area of the circular ring is given by the formula ...

  A = πr²

where r is the radius, or half the diameter.

  A = π(14 ft)² = 196π ft² ≈ 615.752 ft²

The area of the training area is about 615.8 square feet.

__

The number of truckloads of dirt required for coverage will be ...

  (615.8 ft²)/(75 ft²/truckload) ≈ 8.21 truckloads

Since the dirt comes only in whole truckloads, Hilary needs 9 truckloads.

8 0
3 years ago
Is the association between the year and distance jumped linear or nonlinear
AleksandrR [38]

Your stupid.....................................................................................

3 0
4 years ago
Which represents a quadratic function?
sweet-ann [11.9K]

Answer:

f(x) = 8x² + 2x - 5

Step-by-step explanation:

I think you meant to put an 8 instead of *.

Anyways, f(x) = 8x² + 2x - 5 is a quadratic function because there is 8x² in the function.

If this answer is correct, please make me Brainliest.

6 0
4 years ago
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