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Serggg [28]
2 years ago
7

SOMEONE PLEASE HELP!

Mathematics
1 answer:
Andrews [41]2 years ago
7 0

Answer:

17.2°

Explanations

To find angle A, use the cosine rule.

a^2 = b^2 + c^2 - 2 × a × c cos A

4^2 = 7^2 + 10^2 - 2 × 7 × 10 cos A

16 = 49+ 100 - 140 × cosA

16 = 149 - 140cosA

16- 149 = - 140cosA

-133 = - 140cosA

cosA = 133/140

cosA = 0.95

A = 17.2°

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What is the simplified form of the expression?
zimovet [89]

Answer:

7c^2d-7c+4d-10

Step-by-step explanation:

Start off with the term that has c^2 in it. 5c^2d + 2C = 7c^2d, then since you have multiple choice, the d value differs between the two answer choices that have 7c^2d so you can do +3d +d to get +4d to get the fourth answer choice.

To check your work, you can add/subtract each term to see if you get 7c^2d-7c+4d-10

3 0
3 years ago
The area of a rectangular closet is 8 square feet. The perimeter is 12 feet. What are the
3241004551 [841]
A=8ft^2
A=l•w
8=l•w
l=8/w

P=2(l+w)
12=2(8/w+w)
12=2(8/w+w/1)
12=2(8/w+w^2/w)
12=16w^2/w
12=16w
w=12/16
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8 0
3 years ago
Question 15 of 20
grandymaker [24]

Answer: 3 inches

Step-by-step explanation:

4 0
2 years ago
Plz HELP will give extra points
jekas [21]
The mode is 44
The range is 3
The median is 44
The mean is 44
4 0
3 years ago
PLEASE HELP!!!!!!<br> Counts for most of my grade
MrMuchimi

Answer:

the answer is 9/ 15

Step-by-step explanation:

Sin y = p / h

= 9/ 15 (from y reference )

cos x =b/h = 9 / 15

as from x reference b= 9

I hope this will be helpful to you

if yes give 5 star

5 0
3 years ago
Read 2 more answers
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