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3 years ago

3 over 5 to the power of 2 + 4 × 3 − 2

Mathematics

2 answers:

dsp733 years ago

6 0

( ---- )^2 + (4*3) - 2

becomes

---- + 12 -2 following order of operations rules (PEMDAS)

Combining the last 2 terms, we get 10. The final answer is

9/25 + 10, or 10 9/25, or 10.36.

frozen [14]3 years ago

6 0

The 2 over 4 makes to be 10.36

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A Dinner at chilis cost you $32.At the restaurant,there is a 6% SALES TAX.However you have to pay for a tip 15%.What is your fin

murzikaleks [220]

Answer:

Tipping before tax: $38.72

Tipping after tax: $39.01

Step-by-step explanation:

4 0

3 years ago

Kelso sold digital cameras on her website. She bought the cameras for $65 each and included 60% markup to get the selling price.

Butoxors [25]

Find 60% of 65 then add it to 65

0.6 x 65 = 39

now add it to 65:

39 + 65 = 104

They are selling them for 104$

6 0

3 years ago

What is the value of n in the proportion below n/28 = 4/7

butalik [34]

n is 16

$\frac{n}{28} = \frac{4}{7} \\ n = \frac{4 \times 28}{7} = 16$

good luck

3 0

3 years ago

Read 2 more answers

Determine whether the polynomial below can be factored into perfect squares. If so, factor the polynomial. Otherwise, select tha

kkurt [141]

Answer:

A. $=(9x-12)^2$

Step-by-step explanation:

We need to determine whether the polynomial $81x^2-216x+144$ can be factored into perfect squares. If so, factor the polynomial. Otherwise, select that it cannot be factored into a perfect square.

$81x^2-216x+144$

$=9(9x^2-24x+12)$

$=9(9x^2-12x-12x+12)$

$=9(3x(3x-4)-4(3x-4))$

$=9(3x-4)(3x-4)$

$=9(3x-4)^2$

$=3^2(3x-4)^2$

$=(3(3x-4))^2$

$=(9x-12)^2$

Hence choice A. $=(9x-12)^2$ is correct.

3 0

3 years ago

Read 2 more answers

What is the surface area of the box if it is scaled up by the factor of 10 and the surface area is 16in

algol [13]

If each linear dimension is scaled by a factor of 10, then the area is scaled by a factor of 100. This is because 10^2 = 10*10 = 100. Consider a 3x3 square with area of 9. If we scaled the square by a linear factor of 10 then it's now a 30x30 square with area 900. The ratio of those two areas is 900/9 = 100. This example shows how the area is 100 times larger.

Going back to the problem at hand, we have the initial surface area of 16 square inches. The box is scaled up so that each dimension is 10 times larger, so the new surface area is 100 times what it used to be

New surface area = 100*(old surface area)
new surface area = 100*16
new surface area = 1600

Final Answer: 1600 square inches

3 0

3 years ago