3 years ago

If AB=29cm and angle A= 25 degrees, what is AC to the nearest centimeter

Mathematics

1 answer:

lapo4ka [179]3 years ago

8 0

Answer:

13.5

Step-by-step explanation:

Using sine rule

Tan25 = AC/AB = AC/29

AC = 29 × Tan 25 = 29 × 0.45 = 13.5229220865

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Five books cost¢21. what is the price cost of seven similar books

Liono4ka [1.6K]

Answer:

Your answer should be $29.40

Step-by-step explanation:

If you divide 21 by 5 you get 4.2, so each book costs $4.20.

4.2 x 7 = 29.4

Therefore, your total cost for 7 books will be $29.40

I hope this helps!

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2 years ago

Scores are 78,81,83, and 76 what must she earn on the fifth test to earn an average test score of 81

iogann1982 [59]

The average value of a data set is equal to the sum of each entry divided by the number of entries. In this case, we have 5 scores, so we can find set up the following equation where x is the fifth score:

$\dfrac{78+81+83+76+x}{5} = 81$

Now solve for x:

$78 + 81 + 83 + 76 + x = 81(5)$

$318 + x = 405$

$x = 87$

The fifth score must be 87.

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2 years ago

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A shipper bought the following item at the farmer market

S_A_V [24]

Answer: What Item

Step-by-step explanation: And In What Quantity

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2 years ago

Which of the following approaches would be an appropriate first step? select all that apply

Eva8 [605]

Answer:

Divide both sides by -1/3, Apply distributive property, add 1/3 to both sides

Step-by-step explanation:

If its confusing just replace -1/3 with a simple number such as -1, to make it make sense.

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2 years ago

What is the total if your tip is 20% and your subtotal is 7.47

SVETLANKA909090 [29]

Answer:

$8.96

Step-by-step explanation:

To find the total amount, multiply the percentage of the tip (20%) as 0.20 with 7.47

(7.47×0.20=1.494)

Add $1.49 to $7.47

(1.49+7.47=8.96)

And there is your total amount with a 20% tip!

$8.96

5 0

2 years ago