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3 years ago

Help I’m being timed!!!!!!

Mathematics

2 answers:

cestrela7 [59]3 years ago

8 0

Step-by-step explanation: Here, notice that the value that we

don't know is how many CDs are purchased.

Since CD's cost $8, we multiply 8 by our variable, which is x.

So we have 8 times x or 8x.

In addition, since there is a one time fee

of $15 to begin, we add 15 to 8x.

So we have 8x + 15.

lina2011 [118]3 years ago

7 0

Answer: dark blue

8 for a cd and start with $15

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Could someone please explain to me how to solve this question?

Maksim231197 [3]

Answer:

$y+2 = x+2$

Step-by-step explanation:

A line is written in the point-slope form if its equation is in the form

$y-y_1 = m(x-x_1)$

where

$m=\frac{y_2-y_1}{x_2-x_1}$ is the slope of the line, calculated using the two points $(x_1,y_1)$ and $(x_2,y_2)$

In this problem, we have the following two points:

$(x_1,y_1) = (-2,-2)\\(x_2,y_2)=(2,2)$

Therefore we can calculate the slope of the line:

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{2-(-2)}{2-(-2)}=\frac{4}{4}=1$

And so, the equation of the line in point-slope form is

$y-(-2) = 1(x-(-2))\\\rightarrow y+2 = x+2$

5 0

3 years ago

Angles ∝ and β are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of ∝

snow_lady [41]

Well, since we know that sin(x) = cos(90-x), we can transform the given into
2x - 8/3 = 90 - (4x - 10/3)
2x - 8/3 = 90 - 4x + 10/3
Now clear fractions by multiplying by three...

6x - 8 = 270 - 12x + 10
6x - 8 = 280 - 12x
18x = 288
x = 16
4x - 10/3 = 4(16) - 10/3 = 64 - 3.33 = 60.67 degrees.
Choice C.

8 0

3 years ago

Please help! This is due in 20 minutes.

Arturiano [62]

Answer: the answer is C 190

Step-by-step explanation:

i promise this is the answer

3 0

3 years ago

What is the value of x in the equation 1/5 x-2/3 y=30 when y =15

laiz [17]

First replace y with 15.
1/5x-10=30
Then just solve from there.
x=200