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3 years ago

What is 77 = 4x + 57

Mathematics

1 answer:

Svetach [21]3 years ago

3 0

Answer:

$x=5$

Step-by-step explanation:

$77=4x+57$

Subtract 57 from both sides:

$4x=20$

Divide both sides by 4:

$x=5$

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It took Brian 6 hours to drive to the sales conference. He took the same route on the way back home, but

g100num [7]

Answer: 54 mph

Step-by-step explanation:

d-the distance

s+9 - the speed to the conference

d=6*(s+9)

s- is the speed on the way back home

d=7*s

so 6*(s+9)=7*s

6s+54=7s

-6s -6s

54= 7s-6s

s=54 mph

6 0

3 years ago

Christopher plays quarterback for a

jeka94

Answer:

70%

Step-by-step explanation:

$42\div60$

Calculate

$\frac{42}{60}$

Cross out the common factor

$\frac{7}{10}$

Multiply a number to both the numerator and the denominator

$\frac{7}{10}\times\frac{10}{10}$

Write as a single fraction

$\frac{7\times10}{10\times10}$

Calculate the product or quotient

$\frac{70}{10\times10}$

Calculate the product or quotient

$\frac{70}{100}$

Rewrite a fraction with denominator equals 100 to a percentage

$70$ %

I hope this helps you

:)

8 0

1 year ago

For questions 10-11 if l || m, find the values of x and y.

klemol [59]

Answer:

10) 9x - 2° = 5x + 54° (corresponding angles are equal)

9x - 5x = 54 + 2

4x = 56

x = 56/4

x = 14°

10y + 6° = 9x - 2° (linear pair)

10y + 6° = 9(14)° - 2°

10y + 6° = 126° - 2°

10y + 6° = 124°

10y = 124° - 6°

10y = 118

y = 118/10

Sorry, i don't know how to do the 11th question

but hope this helps you!

8 0

2 years ago

I NEED HELP ASAP!!!!!!

natita [175]

Answer:

$3\sqrt{7}$

Step-by-step explanation:

5 0

2 years ago

What is the approximate circumference of a circle with the diameter of 9

WINSTONCH [101]

Answer:

9pi

Step-by-step explanation:

circumference is 2(pi)(r) or diameter(pi)

6 0

3 years ago