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12345 [234]
3 years ago
8

Brainliest goes to whoever answers correctly

Mathematics
2 answers:
SSSSS [86.1K]3 years ago
5 0

Answer:

The answer is C.

Darya [45]3 years ago
5 0
It definitely c because your trying to find what they had spent
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Write the equation of the line parallel to 3x-y=7 that passes through point(-5,-3)
Ganezh [65]
<h2>Answer:</h2>

\boxed{y-3x=12}

<h2>Step-by-step explanation:</h2>

In this problem we know the equation of a line, which is:

3x-y=7

We also can write this equation as:

y=3x-7

The slope of this line is m=3 which is the slope of the line we are looking for because they're parallel. We also have a point (-5,-3). Therefore, we can write this equation as follows:

y-y_{0}=m(x-x_{0}) \\ \\ y-(-3)=3(x-(-5)) \\ \\ y+3=3(x+5) \\ \\ y+3=3x+15 \\ \\ \boxed{y-3x=12}

From the figures below, the line in red is 3x-y=7 while the line in blue is y-3x=12 and this line passes through the point (-5, -3)!

4 0
3 years ago
Read 2 more answers
(7 - 5 + 2 ) ÷ 4 × 10 + 9=​
Irina18 [472]

Answer:

19

Step-by-step explanation:

(7-5+2)=4

4/4= 1

1 x 10= 10

10 + 9= 19

8 0
3 years ago
Find the volume of the solid formed by rotating the region inside the first quadrant enclosed by y=x^3 and y=9x about the x-axis
Lisa [10]
First solve x³=9x

x^3-9x=0&#10;\\x(x^2-9)=0&#10;\\x(x-3)(x+3)=0&#10;\\x=0, x=3,x=-3

We can ignore x = -3 because it is not in the first quadrant.

<span>So our integral is going to go from x=0 to x=3.
</span>
<span>Now we can use the formula
</span><span>V=\int_{a}^{b}\pi f(x)^2dx
</span>\int\limits_{0}^{3}(\pi (9x)^2-\pi(x^3)^2)dx&#10;\\\int\limits_{0}^{3}(\pi (9x)^2-\pi(x^3)^2)dx&#10;\\\pi\int\limits_{0}^{3}(81x^2-x^6)dx&#10;\\2\times \int\limits_{0}^{3}[\pi(9x)^2-\pi(x^3)^2]dx&#10;\\\pi\left[81\frac{x^3}{3}-\frac{x^7}{7}\right]_{0}^{3} \\ \\\frac{2916\pi}{7}<span>
</span>
7 0
3 years ago
Mr brooks is buying a television set for $850.The sales tax is 6%. What will be the total amount he will pay for the television
mina [271]

Answer:

Step-by-step explanation:

Sales tax is a percentage of the amount of the item.  If Mr. Brooks is paying 6% tax on an item that costs $850, not only is he paying 100% of the cost of the item, he's paying another 6% on top of that.  So we can say that he is paying 106% of $850, which in equation form, is

850(1.06) = ???

The amount that he will pay after adding in tax of 6% is $901

3 0
3 years ago
It takes 24 electricians 36 days to wire a new housing subdivision. How many days would 32 electricians take to do the same job?
Jlenok [28]

Answer:

The 32 electricians are expected to finish the job in 27 days.

Step-by-step explanation:

In this case we can apply a rule of three to calculate the time it'll take for the 32 electricians to finish the job. This is done below:

24 electricians -> 36 days

32 electricians -> x days

We have to be careful here, since the variables are inversely proportional, since if there are more electricians working on the same job, we expect the job to be finished in fewer days, therefore we need to invert one of the fractions as shown below:

\frac{24}{32} = \frac{x}{36}\\32*x = 36*24\\x = \frac{864}{32}\\x = 27

The 32 electricians are expected to finish the job in 27 days.

6 0
3 years ago
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