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Elina [12.6K]
2 years ago
14

Find the number a for which x=5 is a solution of the given equation.

Mathematics
1 answer:
vfiekz [6]2 years ago
3 0

Step-by-step explanation:

x + 8a = 25 + ax - 7a

x = 5

5 + 8a = 25 + 5a - 7a

5 + 8a = 25 - 2a

5 + 10a = 25

10a = 20

a = 2

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You have $200 in a savings account. Each week for 8 weeks, you take put $18 for spending money. How much money is on your accoun
IceJOKER [234]

8 * 18 = 144

200 - 144 = 56

so $56 dollars would be left in your bank account

8 0
3 years ago
Read 2 more answers
Y = x +4<br> 3x + y = 16
Vesna [10]

Answer:

x= 3 while fo y = 7 that's the answer

5 0
3 years ago
clark made a model of his house. his house is 30 1/2 feet long. the dimensions of the model were 1/25 the dimensions of clarks a
balandron [24]

Answer:

1.22 feet, or 1  11/50 ft

Step-by-step explanation:

Find 1/25 th of 30 1/2 feet:

 1        61 ft

----- * ---------- = 1.22 feet, or 1  11/50 ft

25      2

The length of the model is  1.22 feet, or 1  11/50 ft

7 0
3 years ago
Is -3 a whole number and/or a natural number?
vredina [299]
Whole number i think
7 0
3 years ago
Read 2 more answers
Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 47.3 m
Harlamova29_29 [7]

Answer:

47.4167

D. The computed mean is close to the actual mean because the difference between the means is less than 5%

Step-by-step explanation:

Given the distribution :

Speed(m/hr) ___ midpoint(x) ___ F ___fx

42 - 45 _______ 43.5 ________21 __ 913.5

46 - 49 _______47.5 _________15 __712.5

50 - 53 _______ 51.5 _________6 __ 309

54 - 57 _______ 55.5 ________ 4 ___ 222

58 - 61 ________59.5 ________ 2 ___ 119

The midpoint, x= sum of lower and upper boundary divided by 2

For instance, (42 + 45) / 2 = 43.5

The computed mean, Σfx / Σf = 2276 / 48 = 47.4167

Actual mean = 47.3 miles

(47.4167 - 47.3) / 47.3 * 100% = 0.24%

6 0
3 years ago
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