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NikAS [45]
3 years ago
8

7(x-2)=21 help me with this answer plz show work

Mathematics
1 answer:
kramer3 years ago
4 0

Answer:

x=5

Step-by-step explanation:

7 times x

7 times 2

7x-14= 21

14+14= 21+ 14

7x=35

x=5

7 times five equals 35

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Consider the equation x – 10 = 11 – 2x.
34kurt
X=7

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Solve each equation for the given variable. Use inverse operations to solve each equation.
andre [41]
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3 years ago
Write the decimal 0.8¯¯¯ as a fraction in simplest form.
denis23 [38]

Answer: 4/5

Step-by-step explanation:

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hope this helps u

4 0
3 years ago
Hello please help will give brainliest!
jeka57 [31]
The answer is A. because the first part shows the ratio 3:2 and the other 2 shows equivalent ratios.
8 0
3 years ago
A factory produce bicycles at a rate of 110+0.5t^2-0.9t bicycles per week (t in weeks)
klasskru [66]

Answer:

221

Step-by-step explanation:

Day 8 is the first day of the second week.

Day 21 is the last day of week 3.

We need to know the n umber of bicycles made from t = 1 to t = 3

The function is b(t) = 110 + 0.5t^2 - 0.9t, where t is in weeks.

We need to integrate the function with the limits of 1 to 3.

\int_{1}^{3} (110 + 0.5t^2 - 0.9t) dt

\int_{1}^{3} (110 + \dfrac{t^2}{2} - \dfrac{9t}{10}) dt

= 110t + \dfrac{t^3}{6} - \dfrac{9t^2}{20} \Biggr|_{1}^{3}

= 330.45 - 109.72

= 220.7333

Answer: 221

3 0
3 years ago
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