All categories

3 years ago

Helpp! Evaluate the expression and enter your answer below. 42-13

Mathematics

1 answer:

Andrews [41]3 years ago

5 0

Answer - 3

In order to do this equation you would follow PEMDAS. Being as there isn’t any parentheses, multiplication, or division involved, we only need step E ( exponents) and step S ( subtraction). In the acronym, E comes before S so we multiple 4 * 4 ( if you did not know: the exponent of 2 means you would multiply the number with itself.) 4 * 4 equals 16. The equation is now 16- 13. When you subtract the two, the product is 3.

You might be interested in

lisov135 [29]

2 = X = -1

2. 2(4x+2) - (x-4) = 3(x+2)

Expand tge expression

= 8x + 4 -x +4 = 3x + 6

CLT ( Combine like terms)

= 7x + 8 = 3x + 6

Rearrange the terms

7x - 3x = 6 - 8

CLT

4x = -2

Divide both sides by 4

x = -2

x = -1

4 0

1 year ago

Read 2 more answers

A wall is 4 m by 3 m. Which is the correct unit of measurement to use when figuring out how much paint to buy to cover the wall?

7nadin3 [17]

The answer would be b

6 0

3 years ago

A baseball team had 28 hime runs last year. This year they have 20 homeruns. What was the percent of change

dexar [7]

Answer:

28.57% drop

Step-by-step explanation:

Number of runs

Last year = 28
This year = 20

Change this year:

28 - 20= 8

Change %:

8/28*100 = 28.57% drop

8 0

3 years ago

Write the ratio as a fraction in simplest form. 27 to 72

Mademuasel [1]

Answer: The ration for 27:71, would be 3/8. Hope this helps!

4 0

3 years ago

Help! This is due today and I'm stuck on this problem.

Varvara68 [4.7K]

Answer:

280.6 $m^2$

Step-by-step explanation:

<u>find the length of each side:</u>

you're only given h = 9 m

the formula for h is $h=\frac{\sqrt{3} }{2} *a$ , where a is a side length of the hexagon

plug h in:

$9=\frac{\sqrt{3}}{2}*a\\\\a=9*\frac{2}{\sqrt{3}}\\\\$

a ≈ 10.392 m

<u>now find the area of a triangle:</u>

1/2 (10.392)(9) = 46.764 $m^2$

multiply that by 6 and you get 280.584 ≈ 280.6 $m^2$

you can also use the regular hexagon area formula instead of finding the individual area and multiplying by 6: $\frac{3\sqrt{3} }{2} *a^2$

7 0

3 years ago

Read 2 more answers