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3 years ago

In the following math problem, which operation should you do FIRST? 8 + 3(72 x 4) – 5 ÷ 2

2 answers:

8 0

PEMDAS says do this order of operations: parentheses, exponents, multiplication, division, addition, subtraction.
So, 72x4 is the first step.

posledela3 years ago

3 0

According to the PEMDAS rule
the parentheses () should be solved first

You might be interested in

What would you have to do to change 10 cubic feet into cubic inches?

andrezito [222]

1 foot = 12 inches

(1 foot)³ = (12 inches)³

12³ = 1,728 in³

To change 10 cubic feet into cubic inches

10 ft³ x 1728 in³/ft³ = 17,280 in³

So the answer will be:
C. Multiply by 1,728

3 0

3 years ago

A straight line has a slope of 2.08. Calculate the angle that the line makes with the x (horizontal) axis.

zubka84 [21]

Answer:

The angle that the line makes with x-axis of of 64.3º.

Step-by-step explanation:

Equation of a line, and angle with the x axis:

The equation of a line has the following format:

$y = mx + b$

In which m is the slope.

The angle that the line makes with the x axis is given by the angle which has tangent m, that is, $a = \tan^{-1}{m}$ .

In this question:

We have that $m = 2.08$ . So

$a = \tan^{-1}{2.08} = 64.3$

The angle that the line makes with x-axis of of 64.3º.

4 0

3 years ago

A rental company charges $15 plus $4 per hour to rent a bicycle. If Margie does not want to spend more than $27 for her rental,

serious [3.7K]

15 + 4(h) = 27
27 - 15 = 12
12/4 = 12
Margie can rent the bicycle for 4 hours.

8 0

3 years ago

Evaluate each expression

solmaris [256]

Answer:

4 * 4 ÷ 4 = 4

8 ÷ (2*2) = 2

Step-by-step explanation:

$4 * 4 \div4\\\rule{150}{0.5}\\\text{Use PEMDAS}\\\\4 * 4 \div4\\\\4 * 1\\\\\boxed{4}$

==============================

$8 \div (2*2)\\\rule{150}{0.5}\\\text{Use PEMDAS}\\\\8 \div (2*2)\\\\8 \div 4\\\\\boxed{2}$

I hope this helps.

5 0

2 years ago

Find the slope of the given points (3, 4) and (7,-4).<br> A)-1/2<br> B) 2<br> C) -2<br> D) 0

kakasveta [241]

Answer:

-2

Step-by-step explanation:

$y = kx + n$

When you insert the given points you get

$3k + n = 4 \\$

$7k + n = - 4 \\$

Than you multiply the first one by - 1 and sum it with the second to get rid of n

$4k = - 8 \\ k = - 2$

7 0

3 years ago