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3 years ago

11

To encourage bob to work his math problems correctly, his dad said he'd pay him 10 cents for each correct answer and charge him

5 cents for each incorrect answer. If he received a dime after doing 25 problems, how many problems did Bob get right?

1 answer:

tatuchka [14]3 years ago

4 0

Bob gets 16 problems correct. Hope this helped.

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gregori [183]

Answer:

135 ft^2

Step-by-step explanation:

7yd = 7*3 feet = 21 feet

$area \: of \: trapezoid \\ = \frac{1}{2} (15 + 21) \times 7.5 \\ = \frac{1}{2} \times 36 \times 7.5 \\ = 18 \times 7.5 \\ = 135 {feet}^{2}$

4 0

3 years ago

Read 2 more answers

Could someone help i’ll mark brainliest! please explain too

-BARSIC- [3]

Answer:

C. 8

Step-by-step explanation:

I almost thought this was going to be Pythagorean Theorem, but no.

Use Cosine Law:

cos θ = $\frac{10^2 + 21^2 - 17^2}{2(10)(21)}$

θ = cos−1(0.6)

θ = 53.130...

Now use the SOHCAHTOA ratio for sine ( $\frac{opposite}{hypotenuse}$ ) to find x now that you have one angle:

sin θ = $\frac{x}{10}$

x = 10sinθ (θ isn't needed to be written out as it is shown in the equation above)

x = 8

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2 years ago

5y + 6 = 25 + 6 what property of equality is used

steposvetlana [31]

Addition property
6=6 then 5y+6=25+6

7 0

2 years ago

Carleen has 104 pieces of candy leftover from Halloween. She would like to distribute them evenly to the 8 kids on her block. Wr

algol13

Answer:

8x = 104

x = 13

Step-by-step explanation:

Since we are trying to distribute it evenly, we divide 104 by 8 to get 13 pieces of candy per child.

The equation is saying 8 kids times <em>x</em> amount of candy per kid is equal to a total amount of 104 pieces of candy.

4 0

3 years ago

Read 2 more answers

Which of the following is equivalent to 1/8?

neonofarm [45]

Answer: 1 to 8
Reason: because there’s 1 of 8 items is the same ratio

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3 years ago