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CaHeK987 [17]
3 years ago
7

Help me plzzzzzzzZzzzzz​

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
8 0

Use order of operations.

-23-20-(-17)+(-5)x(-2)+4x5

Do all multiplication steps.

-23-20-(-17)+10+20

Do all addition and subtraction steps fro left to right.

-43-(-17)+10+20

-26+10+20

-16+20

answer: 4

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the ratio of girls to boys in an astronomy club was 3:2. there were 30 girls. how many total members were there in the club
lakkis [162]

Answer:

Explanation: the ratio 2:4 can be reduced to 1:2, where the number of girls corresponds to the 1 and the number of boys corresponds to the 2. If there are 14 girls, then there must be 28 boys (14 x 2 = 28). Now to get the total number we need to add the total number of boys and girls together. So 14 + 28 = 42

Step-by-step explanation:

5 0
3 years ago
Help!!! Quick answer please!
olga_2 [115]

Answer:

18 sq ft

Step-by-step explanation: all you have to do is add the sides. 5+5=10

4+4= 8

10+8=18

This makes the most sense with the answers givin

3 0
3 years ago
Find the unknown side length
Westkost [7]
For any right triangle, we can use the Pythagorean Theorem. The Pythagorean Theorem states that for any right triangle, the legs when squared and added together will be equal to the hypotenuse squared.

In mathematical notation: a^2 + b^2 = c^2

Where the variables a and b are the legs and the variable c is the hypotenuse.

Because we know the two side lengths of the triangle, we can solve for the unknown side.

We know the length of one of the legs and the hypotenuse.

Plug in the values.

10^2 + b^2 = 24^2 \\ \\ 
100 + b^2 = 576 \\ \\ 
b^2 = 476 \\ \\ 


b = \sqrt{476}

So, the square root of 476 is the unknown length.
3 0
3 years ago
Simplify completely. 5(x - 2) + 2x
fomenos
<span>5(x - 2) + 2x
= 5x - 10 + 2x
= 7x -10

answer
</span>7x -10
4 0
3 years ago
Read 2 more answers
A turtle laid 70 eggs and 9/15 hatched how many did not hatch
slavikrds [6]

Answer:

<h2><u>28 eggs did not hatch.</u></h2>

Step-by-step explanation:

<h3>1) Calculate 9/15 of 70 eggs. </h3>

\frac{9}{15}  × 70

= \frac{630}{15}

= 42

<h3>2) To calculate how many eggs <u>DID NOT</u> hatch, we should subtract 42 from 70.</h3>

70 - 42 = 28

<u>28 eggs did not hatch.</u>

<em>Hope this helps! I would really appreciate it if you would please mark me brainliest! Have a blessed day!</em>

6 0
2 years ago
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