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3 years ago

How many three-digit positive integers exist, all of whose digits are 2's and/or 5's?

Mathematics

1 answer:

vfiekz [6]3 years ago

3 0

Answer:

Step-by-step explanation:

There are two choices for each digit, and 3 digits, so 2^3 = 8 possible numbers. Here's a list:

222, 225, 252, 255

522, 525, 552, 555

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Which value is a solution of the equation 2 - 8x = -6?<br> A. 1<br> B. 1/2<br> C. -1<br> D. 8

Nuetrik [128]

Answer:

A.) 1

Step-by-step explanation:

First change the equation to 2 + ( - 8x ) = -6 so it’s easier to read

Take away 2 from both sides

So now you have -8x = -8

Divide both sides by -8 so you get positive x and 1

x = 1

3 0

2 years ago

Simplify:

kondaur [170]

Answer:

1. 3r - 2

2. 6x - 9

3. -10y + 29

4. 4x - 3

Step-by-step explanation:

i dont know how to explain. Sorry, i just learn about this today. I have the same exactly questions and here is the answer.

5 0

2 years ago

On last week's climb, each climber carried a pack that was 28% of his or her body weight. One climber weighed 78 pounds. What wa

11Alexandr11 [23.1K]

<h3><u>Solution</u> : </h3>

weight of bag :

$28 \% \: \: of \: \: \: climber's \: \: weight$

$\dfrac{28}{100} \times 78$

$\dfrac{2184}{100}$

$21.84 \: \: \: pounds$

8 0

2 years ago

What is 8.1% of 18.43

IrinaK [193]

9514 1404 393

Answer:

1.49283

Step-by-step explanation:

8.1% as a decimal is 0.081

The product of that and 18.43 is ...

0.081 × 18.43 = 1.49283

If this is a monetary value, it would round to 1.49.

5 0

2 years ago

PLEASE HELP QUICK.HELP. PLEASE EXPLAIN HOW TO FIND ANSWER ASWELL

FromTheMoon [43]

Answer:

gradient = 1

Step-by-step explanation:

Calculate the gradient m using the gradient formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (- 1, 0 ) and (x₂, y₂ ) = (0, 1) ← 2 points on the line

m = $\frac{1-0}{0-(-1)}$ = $\frac{1}{1}$ = 1

6 0

2 years ago