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2 years ago

Helppppppppppppppppppppppp

Mathematics

1 answer:

tresset_1 [31]2 years ago

7 0

Since it’s not x3 it must be +8 so if i were you i’d pick B

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I know it’s a lot to ask but please show your work so I know how to do it. Thank you!

jonny [76]

Answer:

The answer to your question is below

Step-by-step explanation:

Use trigonometric functions to find x

13. cos 40 = 5/x

x = 5 / cos 40

x = 5 / 0.766

x = 6.5

14. tan 25 = x/9

x = 9tan 25

x = 9(0.466)

x = 4.2

15.- cos 65 = x/12

x = 12 cos 65

x = 12 (0.423)

x = 5.1

16.- sin 32 = 15/x

x = 15 / sin 32

x = 15 / 0.53

x = 28.3

17.- tan 55 = 20 / x

x = 20 / tan 55

x = 20 / 1.42

x = 14

18.- sin31 = x / 18

x = 18 sin 31

x = 18 (0.52)

x = 9.3

8 0

2 years ago

On the day a coffee shop first opened, it had 140 customers. 65% of the customers ordered a large coffee.

dangina [55]

91 customers ordered large coffees

6 0

3 years ago

Read 2 more answers

In a triangle the first angle is 10 degrees more than the second angle. The third angle is equal to the sum of first 2 angles .

timurjin [86]

First angle= x+10
Second angle = x
Third angle = x+x+10 or 2x+10

X+10+x+2x +10=180
4x+20=180
Subtract 20 from both sides
4x=160
Divide both sides by 4
X=40
First angle =50
Second angle=40
Third angle =90

8 0

2 years ago

Which of the following expressions can be used to calculate the area of a square with side lengths 5 inches?

NemiM [27]

Step-by-step explanation:

5x5

because 5^2 equals the area

4 0

2 years ago

Write an expression in factored form that is equivalent to the given expression. 1/2x + 4 . can u also tell how you solved it ?

Rufina [12.5K]

2 ways: Easy and hard
Hard=A
Easy=B
A: 1/2x+4 work from there so we do fun stuff with it make something that can be simplified so 1/2x+4 times (2/2)=x+8 now square the whole thing and put the result in a square root thingie (x+8)^2=x^2+16x+64 $\sqrt{x^2+16x+64}$ multiply the whole thing by 4/4 and put $\sqrt{16} [\tex] on top so then 
[tex] \sqrt{x^2+16x+64}$ times $\frac{ \sqrt{16} }{4}$ = $\frac{\sqrt{(16)(x^2+16x+64)}}{4}$ = $\frac{ \sqrt{16x^2+256x+1024} }{4}$ to solve it, factor out the 16 in the square root and then square root 16 to get 4 then it will be (4 times square root of equation)/4=square root of equatio factor square root of equation and square root it and get x+8 divide by 2 to get 1/2x+4

B: 1/2x+4
put stuff that cancels out
1/2x+3x-3x+4+56-56
move them around
3 and 1/2x-3x+60-56
or
2x-3x+1 and 1/2x+30-20+30-36
then just add like terms to solve

5 0

2 years ago