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3 years ago

Help please I need my extra credit

Mathematics

1 answer:

masha68 [24]3 years ago

8 0

Answer: For a test? Nah, thats cheating

Step-by-step explanation: Just kidding, the answer is B...

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A) 90

Alenkinab [10]

We know that AB is perpendicular to CD. (that was given)

Perpendicular angles are 90 degrees because two straight lines (180) crossed make 4 90 degree angles.

180+180=360

90*4=360 See the similarities?

7x+6= 90 degrees

Subtract 6 on both sides.

7x=84

Divide both sides by 7.

x=12

"B" is the correct answer.

I hope this helps!
~kaikers

6 0

3 years ago

Suppose your heart beats 70 times a minute. How long would it take for it to beat 1 million times?

Nina [5.8K]

Answer:

14285.7142857

Step-by-step explanation:

1 mil divided by 70= 14285.7142857

6 0

2 years ago

Any suggestions for a word problem for the equation : 5/12 * 1/6?

n200080 [17]

Thomas had 5/12 of a pie. his friend, Katelyn ate 1/6 of his pie. How much is left?

8 0

3 years ago

4{2a(3a-b)+3ab}+5{3b(a+2b)-4ab}

Paraphin [41]

Follow order of operations.
Distribute what is in the parentheses.
4[6a^2 -2ab +3ab] + 5[3ab + 6b^2 -4ab]

Combine like terms in the brackets.
4[6a^2 + 3ab] + 5[-1ab + 6b^2]

Distribute the 4 and the 5.
24a^2 + 12ab -5ab + 30b^2

Combine like terms.
24a^2 +7ab + 30b^2

That's your final answer:
24a^2 +7ab + 30b^2

5 0

3 years ago

A store pays $20 for a hat. to make a profit the store prices the hat 60% higher. later a sale reduce the price by 10%. finally,

Maslowich

The clearance price of hat is $17.28

Step-by-step explanation:

Price paid by store = $20

Increment = 60% of price paid

Increment = $\frac{60}{100}*20 = \frac{1200}{100}$

Increment = $12

Increased price = 20+12 = $32

Sale = 10%

Discount amount = 10% of increased price

Discount amount = $\frac{10}{100}*32=\frac{320}{100}$

Discount amount = $3.2

Sale price = 32 - 3.2 = $28.8

Clearance sale = 40%

Discount of clearance sale = 40% of sale price

Discount = $\frac{40}{100}*28.8=\frac{1152}{100}$

Discount = $11.52

Clearance price = sale price - Discount of clearance sale

Clearance price = 28.8 - 11.52 = $17.28

The clearance price of hat is $17.28

Keywords: percentage, subtraction

Learn more about subtraction at:

#LearnwithBrainly

6 0

3 years ago

Help please I need my extra credit ​

Help please I need my extra credit