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VMariaS [17]
2 years ago
15

If tan b = 40/9, then sin b = ?​

Mathematics
1 answer:
jeyben [28]2 years ago
8 0

Answer:

40/41

Step-by-step explanation:

Tangent is opposite over adjacent, and sine is opposite over hypotenuse.  We can find hypotenuse from Pythagorean, which gets us 41 as the hypotenuse.  Therefore sin b = 40/41.

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Ramon rented a sprayer and a generator on his first job he used each piece of equipment for 6 hours at a total cost of $90 on hi
Oliga [24]
Given:
Sprayer and generator

1st Job: 6 hours each for a total of $90
2nd Job: 4 hours sprayer and 8 hours generator for a total of $100

Let x = spayer ; y = generator

6x + 6y = 90
4x + 8y = 100

6x = 90 - 6y
x = 90/6 - 6y/6
x = 15 - y

4x + 8y = 100
4(15-y) + 8y = 100
60 - 4y + 8y = 100
4y = 100 - 60
4y = 40
y = 40/4
y = 10

x = 15 - y
x = 15 - 10
x = 5

Sprayer = 5 per hour ; generator = 10 per hour

To check:
6x + 6y = 90
6(5) + 6(10) = 90
30 + 60 = 90
90 = 90

<span>4x + 8y = 100
</span>4(5) + 8(10) = 100
20 + 80 = 100
100 = 100

5 0
3 years ago
I rlly need help like pleasee
NeTakaya

Answer:

well hope it helps

I think it will be 90.

8 0
3 years ago
Help please!!! I will give a gold medal.
morpeh [17]
Well assuming that this would be a typical triangle, and not a right angle one, knowing that the sum of all sides adds up to 180 degrees, simply add all of the expressions and one value and make it equal to 180, and then solve for x.

(6x-1) + (X+14) + 20 = 180
6x - 1 + X + 14 = 160
7x - 1 + 14 = 160
7x + 13 = 160
7x = 147
X = 21.

Now solve for the angles by plugging in X.

A = 6x - 1 = 6(21) - 1 = 125 degrees
C = X + 14 = (21) + 14 = 35 degrees.

I believe these are the solutions.
8 0
3 years ago
Pls answer and explain how you got it - i will mark brainliest<br> (just answer #28)
Akimi4 [234]

Answer:

5 x^2 y^ (-3) z = ?

Step-by-step explanation:

We know the volume of a rectangular prism is given by

V = l*w*h

V = 2x^2 * y^-2 * ?

We are given the volume

V =10x^4 y^-5 z

Set  the two equal

10x^4 y^-5 z = 2x^2 * y^-2 * ?

Divide each side by 2x^2 y^-2

10x^4 y^-5 z /2x^2 y^-2 = 2x^2 * y^-2 * ?/2x^2 * y^-2

10x^4 y^-5 z/ 2x^2 y^-2 = ?

Simplifying

10/2  * x^4/x^2  y^-5/ y^-2  z = ?

We know that a^b/ a^c = a^(b-c)

5 x^ (4-2) y^(-5 - -2) z = ?

5 x^2 y^ (-5 +2) z = ?

5 x^2 y^ (-3) z = ?

4 0
3 years ago
Read 2 more answers
Julie runs 1 1/2 miles in 1/3 hour.How many miles will she run per hour at the same speed?
konstantin123 [22]
Multiply 3 * 1 1/2 to find how many miles she runs per hour

1 1/2 * 3

3/2 * 3

9/2

4 1/2       She will run 4 1/2 or 4.5 miles per hour.
4 0
3 years ago
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