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vovangra [49]
3 years ago
12

Just the 3rd and 4th plz help me

Mathematics
1 answer:
Mademuasel [1]3 years ago
6 0

Answer:

3. 122.025

4. 469.2

Step-by-step explanation:

16.27/2 =8.135

8.135*15= 122.025


11.73 divided by 1/2= 23.46

23.46*20=469.2

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A jogger ran 5 2/3
Savatey [412]

5 2/3 - 1 1/4

5-2 =3

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 answer is 3 5/12

6 0
3 years ago
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Evaluate the numerical expression. 5 + (46 + 7) * 2
bulgar [2K]
5 + (46 + 7) x 2

5 + (53) x 2

5 + 106

111 is answer


PEMDAS (parenthesis, exponent, multiply & divide, add & subtract)


hope this helps
3 0
3 years ago
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8x + y = 17<br> 5x + 5y = –20
Diano4ka-milaya [45]

Answer:

X=3 Y=-7

Step-by-step explanation:

You can solve a system of equations a number of ways. Substitution makes the most sense in this case. Take the top equation and set it equal to y making it: y=17-8x

Then substitute y in the bottom equation for the y solved in the top. So,

5x + 5(17-8x) = -20

Then solve for x

x=3

Now that we know x, plug it back into the equation for y

y = 17 - 8(3)

y = -7

So your solution is (3, -7)

8 0
3 years ago
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Red and grey bricks were used to build a decorative wall. The number of red bricks/number of grey bricks was 5/2. There were 140
Airida [17]
To find the number of red bricks used, you can create a part to part to whole ratio from the simple ratio of red to grey brick they give.

Then, use the total to create an equivalent ratio with the actual total number of bricks (140).

<u>5 red </u>    <u>100 red</u>
<u>2 grey</u> =  <u>40 grey</u>
7 total   140 total
<u>
</u>Each time, the simple ratio was multiplied by 20 to get the actual totals for each color.
<u>
</u>There were 100 red bricks used.<u>


</u>
6 0
3 years ago
If m=5, evaluate the following: 20-5m =​
MissTica

Answer:

-5

Step-by-step explanation:

20-5m

20-5(5)

20-25

5.

Is this the answer that you are looking for?

6 0
2 years ago
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