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nignag [31]
3 years ago
10

PLEASE HELP! Solve for n. −56n=40

Mathematics
2 answers:
Alina [70]3 years ago
8 0

Answer:

Option b is correct

Value of n is -48

Step-by-step explanation:

Given the equation: -\frac{5}{6}n = 40

We have to solve for n;

by Cross multiply in equation [1] we have;

-5n = 6 \times 40

Simplify:

-5n = 240

Divide both sides by -5 we have;

n = -48

Therefore, the value of n is, -48


Svetllana [295]3 years ago
5 0
Its (-48) did the test and it is this
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Tom determines the system of equations below has two solutions, one of which is located at the vertex of the parabola.
Rus_ich [418]

Answer:

b must equal 7 and a second solution to the system must be located at (2, 5).

Step-by-step explanation:

Rearranging the first equation:

y = (x - 3)^2 + 4

From this we see that the vertex is at the point (3,4).

So one solution of equation 2 is (3 ,4).

Substituting in equation 2:

4 = -3 + b

b = 7.

So equation 2 is y = - x + 7.

Now we check if  (2, 5) is on this line:

5 = -2 + 7 = 5 , therefore  (2, 5) is on this line.

Verifying if (2, 5)  is also on y = (x - 3)^2 + 4:

5 = (2 - 3)^2 + 4 =  1 + 4 = 5

- so it is. and a second solution to the system is (2, 5).

5 0
2 years ago
an isosceles triangle has a vertex angle of 21.21 degrees. two sides of the triangle are each 17.91 ft long. whats the area of t
lubasha [3.4K]

Answer:

The area of triangle is A=58.02\ ft^{2}

Step-by-step explanation:

Let

B -----> the measure of the vertex angle of the isosceles triangle ABC

a and c -----> the two congruent sides of the isosceles triangle ABC

we know that

The area of a triangle applying the law of sines is equal to

A=\frac{1}{2}(a)(c)sin(B)

we have

a=c=17.91\ ft

B=21.21\°

substitute in the formula

A=\frac{1}{2}(17.91)(17.91)sin(21.21\°)

A=58.02\ ft^{2}

7 0
3 years ago
Create an equivalent expression that includes a set of parentheses that make the value of the expression 13. Remember, you can h
Ratling [72]

Answer:

(2*9)-5+0

This equals 13.

(8*7)/4-1

This also equals 13.

Hope this helps!

3 0
2 years ago
The tangent of an angle is 3.4. what is the measure of the angle to the nearest tenth?
Amiraneli [1.4K]

To answer this question, you first need to know what SohCahToa is.

S- opposite over hypotenuse

C- adjacent over hypotenuse

T- opposite over adjacent

In this situation, they have made it easier for you as they have given you the quotient of the opposite and adjacent sides (3.4) . Now in order to find an angle, you take the inverse of your expression. So instead of just Tan, you would plug in Tan^-1. So plug it in:

Tan^-1 (3.4)

Answer is 73.6 degrees.

3 0
3 years ago
Need help please anyone ?
Tresset [83]

Answer:

The mean would be 14.4 hours.

Step-by-step explanation:

In order to find the mean, or average, of the numbers, you would add all the numbers together.

17 + 15 +14 + 14 + 12 which equals 72

Then, you take the total which is 72, and divide it by how many numbers you added together which is 5.

72/5 = 14.4

5 0
3 years ago
Read 2 more answers
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