Help plz show work asap!!!!!!

Mathematics

1 answer:

Pie3 years ago

6 0

Answer:

150 m

Step-by-step explanation:

So the scale of the model is 1 cm = 5 m, and the model is 30 cm long. We can set this up as two fractions, then cross-multiply, like so:

1 cm/30 cm = 5 m/x m

1 * x = x

30 * 5 = 150

Now, set the two products equal to each other. Normally we'd have to simplify, but x is already on its own, so we have our answer:

x = 150 m

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How do you solve -5=4x-8

IceJOKER [234]

Answer:

3.25=x

Step-by-step explanation:

start with -5=4x+8

subtract 8 from each side to get:

-13=4x

divide each side by 4 to get your answer:

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7 0

2 years ago

Read 2 more answers

Please help me! I will give brainliest and 50 points if all correct!

miss Akunina [59]

Answer:

10. ○ $\displaystyle 4,85; 4\frac{17}{20}$

9. ○680%

8. ○40%

7. ○ $\displaystyle 60$

6. ○0,4, 40,5%, 11⁄25, 4⁄9

5. ○ $\displaystyle 0,928$

4. ○1%

3. ○76%

2. $\displaystyle See\:above\:grid$

1. $\displaystyle See\:above\:grid$

Step-by-step explanation:

10. To convert from a percentage to a decimal, move the decimal mark twice to the left; each 20 is worth 5, and since 5 by 17 is 85, you have your fractional part of 17⁄20, then attach the whole number of 4.

9. To convert from a mixed number\improper fraction to a percentage, first evaluate the fractional part for a decimal answer, then move the decimal mark twice to the right.

8. To convert from a fraction to a percentage, evaluate the fraction for a decimal answer, then move the decimal mark twice to the right.

7. $\displaystyle \frac{132}{220} = \frac{3}{5} =$ 60%