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Flura [38]
3 years ago
9

Find the exact value.

Mathematics
1 answer:
mezya [45]3 years ago
4 0
Check the picture below

bear in mind the symmetry identities, cos(-θ) = cos(θ)

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80
dalvyx [7]

Answer:

38 is the correct solution

3 0
2 years ago
CAN SOMEONE HELP ME PLEASE ASAP!!!!!!
alexdok [17]

Answer:

12 in.

Step-by-step explanation:

Formula: a^2 + b^2 = c^2

This case: c^2 - a^2 = b^2

1) 15^2 + 9^2 = b^2

2) 225 - 81 = 144

3) \sqrt{144 = 12

5 0
3 years ago
A gaming console cost $299.99. Each game that comes with the console is an additional cost of $20.00. Mr. Yao decide to by x num
givi [52]

This question is not correctly written

Complete Question

A gaming console cost $299.99. Each game that comes with the console is an additional cost of $20.00. Mr. Yao decide to by x number of games Write a variable expression for cost of the number of games Mr. Yao bought

Answer:

Variable expression for the cost of the number of games that Mr Yao bought =

$20x

Where x = number of games that he bought.

Step-by-step explanation:

A variable expression can be defined as a mathematical expression where there is at least one (or more) unknown variable(s)that we have to look or solve for.

The unknown variable is always represented by letters of the alphabet, a, b, x, y e.t.c.

A variable expression can also be called an algebraic expression.

From the above question, we are told that:

Cost of a gaming console = $299.99

If you buy a game with the console = Additional $20.00

My Yao bought = x number of games

Variable expression for the cost of the x number of games that Mr Yao bought

$20 × x

= $20x

Where x = number of games that Mr Yao bought.

4 0
3 years ago
Please help! ( ;v;)/
OleMash [197]

Answer:

C:40

Step-by-step explanatio:

c²=h²-c²

c²=58²-42²

√c²= √3364- 1764

C=√1600

c=40

3 0
3 years ago
Lalo has 1,500 minutes per month on his cell phone plan. How many more minutes can he use if he has already talked for 785 minut
Ket [755]

Answer:

715 minutes

Step-by-step explanation:

we know that

To find out how many more minutes he can use, subtract the number of minutes he has already talked from the number of minutes  of his plan

Let

x -----> the number of minutes  of his plan

y -----> he number of minutes he has already talked

so

x-y

we have

x=1,500\ min\\y=785\ min

substitute

1,500-785=715\ min

4 0
3 years ago
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