2 years ago

Copy link OPEN ENDED QUESTION What operation(s) should come first when solving?

Mathematics

1 answer:

Marina86 [1]2 years ago

4 0

Answer:

Multiplication and Division unless there are parentheses

Step-by-step explanation:

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Factor Completely: 25x2 - 64

prohojiy [21]

This is a difference of perfect squares which is of the form:

(a^2-b^2)

And which always factors to:

(a-b)(a+b)

In this case:

(5x-8)(5x+8)

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4 years ago

You bought a shirt for $24.50, the tax rate is 5%, what is the tax of the shirt? *

ICE Princess25 [194]

23.275 after the tax

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3 years ago

How do I solve <img src="https://tex.z-dn.net/?f=%20%20%5Csin%28%20a%20%29%20%20%3D%20.8325" id="TexFormula1" title=" \sin(

Serga [27]

Answer:

$a=56.4\degree$

Step-by-step explanation:

Let $a$ be an acute angle.

To solve: $\sin(a)=0.8325$ , we take the sine inverse of both sides to obtain:

$\sin^{-1}(\sin(a))=\sin^{-1}(0.8325)$

Recall composition property of a function and its inverse function.

$f^{-1}(f(x))=x$

We apply this property to the left hand side to obtain;

$a=\sin^{-1}(0.8325)$

We now use our scientific calculator to obtain;

$a=56.3564115\degree$

We round to the nearest tenth to obtain;

$a=56.4\degree$

4 0

3 years ago

A triangle has a perimeter of 91 centimeters. Each of the two longer sides of the triangle is three times as long as the shortes

Mkey [24]

9514 1404 393

Answer:

13 cm, 39 cm, 39 cm

Step-by-step explanation:

If x is the short side, then the other two sides are 3x and 3x. The perimeter is the sum of side lengths:

x +3x +3x = 91

x = 91/7 = 13

3x = 3(13) = 39

The length of the short side is 13 cm; the other two sides are 39 cm.

4 0

2 years ago

12. The weight of 56 books is 8kg. What is the weight of 154 such books?

Korvikt [17]

Answer:

56+56=112 16kg

112+42=154 42 = 6kg

Step-by-step explanation:

5 0

3 years ago