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Amanda [17]
3 years ago
8

Solve for x. (Hint: The two add together to equal a straight line)

Mathematics
2 answers:
Readme [11.4K]3 years ago
7 0

Answer:

x = 25

Step-by-step explanation:

According to the hint: The two angle measures would add up to 180°.

(5x+10)+(2x-5)=180\\\\5x+10+2x-5=180\\\\5x+2x+10-5=180\\\\7x+5=180\\\\7x+5-5=180-5\\\\7x=175\\\\\frac{7x=175}{7}\\\\\boxed{x=25}

Hope this helps.

Mila [183]3 years ago
3 0

5x+10+2x-5=180

7x-5=180

    +5  +5

<u>7x</u>=<u>185</u>

7     7

x=26.4285714286

x= 26

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A 72,000 gallon water tower is being drained. Two thousand gallons are drained in the first hour. How many hours will it take to
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Answer:

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Step-by-step explanation:

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A 72,000 water tower is being drained, and in an hour 2000 gallons are drained.

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6 0
3 years ago
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5 0
3 years ago
Divide 3xsquared - 11x - 4 by x - 4<br><br>a. x+1<br>b. x-23<br>c. 3x+1<br>d. 3x-23​
Dmitriy789 [7]

Answer:

c. 3x+1

Step-by-step explanation:

Since the divisor is in the form of x - c, use what is called Synthetic Division. Remember, in this formula, <em>-c</em> gives you the OPPOSITE terms of what they really are, so do not forget it. Anyway, here is how it is done:

4| 3 −11 −4

↓ 12 4

_______________

3 1 0 → 3x + 1

You start by placing the <em>c</em> in the top left corner, then list all the coefficients of your dividend [3x² - 11x - 4]. You bring down the original term closest to <em>c</em> then begin your multiplication. Now depending on what symbol your result is tells you whether the next step is to subtract or add, then you continue this process starting with multiplication all the way up until you reach the end. Now, when the last term is 0, that means you have no remainder. Finally, your quotient is one degree less than your dividend, so that 3 in your quotient can be a 3x, and the 1 follows right behind it, giving you the quotient of 3x + 1.

I am joyous to assist you anytime.

5 0
3 years ago
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