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3 years ago

Solve for c: 6/15=2/c

1 answer:

3 0

Ok, so to solve this, you have to know how to do and set up proportions. Your equation is:

6 2
--- = ----
15 c

If you cross multiply, you get 6c=30. Now simplify by dividing by 6 and you will get c=5.

Hope this helps! :)

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"Calculate cos theta to two decimal places. (Use the pic attached inside!!!)

jolli1 [7]

Let
T = theta
Use the Law of Cosines to get
c^2 = a^2+b^2 - 2ab*cos(T)
7^2 = 10^2+8^2 - 2*10*8*cos(T)
49 = 164 - 160*cos(T)
-160cos(T) = 49-164
-160cos(T) = -115
cos(T) = -115/(-160)
cos(T) = 23/32
cos(T) = 0.71875 which rounds to 0.72

The final answer is C) 0.72

5 0

4 years ago

Read 2 more answers

Which graph represents The solution to 6x-2x5X +7

trapecia [35]

Answer:

Well where are the options for the graphs?

6 0

4 years ago

Which of the following options have the same value as 30\%30%30, percent of 818181?

Nataly_w [17]

Answer:

Option B is correct = $0.3 \times 81$

Step-by-step explanation:

The complete question is: Which of the following options have the same value as 30% of 81?

Group of choices is:

(A) $\frac{30}{100}\times 81 \times 100$

(B) $0.3 \times 81$

(D) $\frac{3}{10}\times 81 \times 10$

(E) $30 \times 81$

Now, the expression given to us is 30% of 81.

Simplifying the above expression we get;

30% of 81 = $\frac{30}{100} \times 81$

= $\frac{3}{10} \times 81$ = $0.3 \times 81$

Now, we will solve each of the given options and then see which option matches with our calculation.

Option (A) is given;

$\frac{30}{100}\times 81 \times 100$ = $30 \times 81$

This doesn't match with our answer, so this option is not correct.

Option (B) is given;

$0.3 \times 81$

This matches with our answer, so this option is correct.

Option (C) is given;

$0.03 \times 81$

This doesn't match with our answer, so this option is not correct.

Option (D) is given;

$\frac{3}{10}\times 81 \times 10$ = $3 \times 81$

This doesn't match with our answer, so this option is not correct.

Option (E) is given;

$30 \times 81$

This doesn't match with our answer, so this option is not correct.

6 0

4 years ago

What name would I give this shape

masha68 [24]

It is a quadrilateral because it has four sides.
It's also a parallelogram because it has two sets of parallel sides.
More specifically, it is a rhombus since all sides are of equal length.
Hope this helps!

3 0

4 years ago

What is the opposite of 0.75

Katen [24]

The fraction would be 3/4

4 0

3 years ago