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3 years ago

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

7x=185

7 7

x=26.4285714286

x= 26

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What is f(7) for the rule of f(x)=-5x+10

Anna35 [415]

Answer:

f(7) = - 25

Step-by-step explanation:

To evaluate f(7) substitute x = 7 into f(x), that is

f(7) = - 5(7) + 10 = - 35 + 10 = - 25

8 0

3 years ago

A small combination lock on a suitcase has 4 wheels, each labeled with the 10 digits 0 to 9. how many 4 digit combinations are

tamaranim1 [39]

This is the easiest way to solve this problem:

Imagine this represents how many combinations you can have for each of the 4 wheels (each blank spot for one wheel): __ __ __ __

For the first situation it says how many combos can we make if no digits are repeated.
We have 10 digits to use for the first wheel so put a 10 in the first slot
10 __ __ __
Since no digit can be repeated we only have 9 options for the second slot
10 9_ __ __
Same for the third slot, so only 8 options
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4th can't be repeated so only 7 options left
10 9 8 7

Multiply the four numbers together: 10*9*8*7 = 5040 combinations

For the next two do the same process as the one above.

If digits can be repeated? You have ten options for every wheel so it would look like this: 10 10 10 10

10*10*10*10 = 10,000 combinations

If successive digits bust be different?
We have 10 for the first wheel, but second wheel only has 9 options because 2nd number can't be same as first. The third and fourth wheels also has 9 options for the same reason.

10 9 9 9 

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3 years ago

Question answer please

Digiron [165]

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3 years ago

What is 24.84 in simplest radical form

Bogdan [553]

Answer:

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Step-by-step explanation:

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3 years ago

What is the solution 4(x-8) + 10= -10

Sati [7]

Answer:

x = 3

Step-by-step explanation:

given

4(x - 8) + 10 = - 10 ← subtract 10 from both sides

4(x - 8) = - 20 ← divide both sides by 4

x - 8 = - 5 ← add 8 to both sides

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7 0

3 years ago

Read 2 more answers