2 years ago

1/2r = 7/2. solve for r

Mathematics

2 answers:

Yuri [45]2 years ago

6 0

Answer:

r = 7

Step-by-step explanation:

hope this was helpful let me know you need the steps! :)

kvv77 [185]2 years ago

3 0

Answer: 1.75 or 1 3/4

Step-by-step explanation:

Because first you need to get R by it’s self by dividing it by 1/2 then if you divided it by one side you have to divide it by the other side so you get r=1.75 or 1 3/4.

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if the balance at the end of eight years on an investment of $630 that has been invested at a rate of 9% is $1083.60, how much w

Zielflug [23.3K]

Answer: The interest is $453.60.

The total amount includes principal + interest. The principal was 630 and the total amount was 1083.60.

1083.60 - 630 = 453.60.

Step-by-step explanation:

8 0

3 years ago

Select the correct answer. For what value of x is sin x = cos 19º, where 0°< x < 90°? OA. 38° ° O B. 71° OC. 26° O D. 19°

Lerok [7]

Answer:

x = 71°

Option B is correct answer.

Step-by-step explanation:

We need to find for what value of x is $sin\: x = cos 19^{\circ}$ , where 0°< x < 90°?

Solving:

$sin\: x = cos\: 19^{\circ}\\Finding \:cos\: 19^{\circ}=0.94551\\Putting\:value:\\sin\:x=0.94551\\Now\:taking\:sin\:inverse\\x=sin^{-1}(0.94551)\\x=71^{\circ}$