3 years ago

Helpppppp mathhh failing

1 answer:

4 0

Sin60 =b/10
√3/2 = b/10
b = √3 / 2 (10)
b = 5√3

d^2 = 10^2 - (5√3)^2
d^2 = 100 - 75
d^2 = 25
d = 5

sin30 = b/a
1/2 = 5√3 / a

a = 5√3 (2)
a = 10√3

c^2 = (10√3)^2 - (5√3)^2
c^2 = 300 - 75
c^2 = 225
c = 15

so
a =10√3, b = 5√3, c = 15,d = 5
answer is
D. last choice

You might be interested in

Garry wants to have $750,000 in 30 years. How much does he have to invest per month in an annuity with an annual interest rate o

Nikolay [14]

I think the answer is Garry has to invest 2,035 dollars a month for 30 years to reach his goal of 750,000 dollars

4 0

3 years ago

Solve for x & y. 30x−42y=−6 and 5x−7y=−1

vladimir1956 [14]

Um.. Both of those equations are the exact same. Divide both sides of the first equation by 6. You get:

$\frac{30x - 42y}{6} = \frac{-6}{6} \\ 5x - 7y = -1$

That is the exact same as the second equation. This system has an infinite number of solutions. 5x - 7y = -1 is a line, so basically every point on that line is a solution to the system.

For example, $x = 0$ and $y = \frac{1}{7}$ would work, but so would $x = 1$ and $y = \frac{6}{7}$

4 0

2 years ago

Is the table proportional?

inysia [295]

No. In order to be proportional, y must change directly with x.

Looking at the first two pieces of data, let's find the ratio between x and y.

2/5 and 3/6. These should be equivalent of the table is proportional.

5 0

3 years ago

Miguel an 2 of his friends share 7 rice cakes equally.

svlad2 [7]

7 ÷ 2 = 3.5 or 3 and 1/2

3 0

3 years ago

Read 2 more answers

Please Help help please I hope you help me thanks

velikii [3]

Answer:

Every number of years 365 and I have been trying to get a hold of

8 0

2 years ago