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2 years ago

Please help! i do not understand !

Mathematics

2 answers:

labwork [276]2 years ago

7 0

The answer would be
C) 3x+20+2x=180

cluponka [151]2 years ago

3 0

Answer:

Step-by-step explanation:

Know that two angles added equals 180

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Solve the equation y = ax - b for the variable a.

lorasvet [3.4K]

Answer:

y-b/x = a

Step-by-step explanation:

y-b/x = a

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2 years ago

Is (8,8) a solution to the equation y=x?

Nookie1986 [14]

Answer:

Yes

Step-by-step explanation:

(8,8) is a solution is y=x.

If we substitute the point into the equation, the equation is true.

(8,8) is in (x,y) format

Substitute:

y=x

8=8

LS=RS (left side equal rights side)

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2 years ago

Read 2 more answers

Sam practices his guitar for 9 hours each week he practices each song for 3 1/2 hours. What is the greatest number of song he ca

liberstina [14]

Answer:

The greatest number of song he can practice in a week is 2.

Step-by-step explanation:

Suppose, the greatest number of song he can practice in a week is $x$

He practices each song for $3\frac{1}{2}$ hours. So, the total time required for practicing $x$ number of songs $= (3\frac{1}{2}*x)$ hours.

Given that, he practices his guitar for 9 hours each week.

So, the equation will be......

$3\frac{1}{2}*x= 9\\ \\ x= 9\div 3\frac{1}{2}\\ \\ x=9\div \frac{7}{2}=9 \times \frac{2}{7}=\frac{18}{7}= 2.571.... \approx 2$

(Rounded as the greatest whole number)

Thus, the greatest number of song he can practice in a week is 2.

4 0

2 years ago

Read 2 more answers

How do you solve for x a=2x+6xz

maksim [4K]

a = 2x + 6xz

a = x(2 + 6z) factored out "x" on right side

a/(2 + 6z) = x divided both sides by (2 + 6z)

Answer: x = $\frac{a}{2 + 6z}$

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2 years ago

A ladder is leaning on a fence and it reaches up a wall 20 feet high. The fence is 10 feet from the wall and the base of the lad

ElenaW [278]

Easy just subtract 20 and 12 and its 8 the reason how i got that is because the ladder is 20 feet high and it now stands 12 feet on the fence so the fence is only 8 feet PLZ MARK ME BRAINIEST MY ANSWER IS RIGHT i have done the test ur welcome.

5 0

3 years ago