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Burka [1]
3 years ago
6

Mark as brainlest! Write an equation for each problem. Then solve. If necessary, round your answers to the nearest hundredth.

Mathematics
2 answers:
Margaret [11]3 years ago
6 0
The answer for A. 124.50$
30% * 415= 124.50
The answer for B. 177$
124/.7=177$
I believe this is correct hope it helps

MatroZZZ [7]3 years ago
5 0

Answer:

a.$138

b.$197

Step-by-step explanation:

(/=division)

a.415/30=138

b.138/7=197

Hope I helped :D

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Find the domain of the function.
timurjin [86]

When taking square roots, you can't take square roots of negative roots of negative numbers. So, what will work for the domain of u(x) is what makes u(x) zero or more. We can make an inequality for that.

u(x) ≥ 0.

\sqrt{9x+27} \geq  0

9x + 27 ≥ 0 by squaring both sides

9x ≥ -27

x ≥ -3

So the domain of the function is when x ≥ -3 is true.

5 0
3 years ago
Which shape has 2 parallel sides ready
Irina-Kira [14]

Answer:

You have two sets of parallel sides. A square has two sets of parallel sides, and it has the extra condition that all of the angles are right angles. So a square is definitely going to be a rhombus. Now, all rhombuses have four sides.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Write the equation of a line that has a m= -5 and passes through the point (-1,4)
svetoff [14.1K]

Answer:

We have a slope and a point, this way, we do not need to find the slope using two points. We can find the line using the Slope Form to turn it into Slope-Intercept Form, also known as "y = mx + b". We can use the Slope Form which is "y - y1 = m(x - x1)". A coordinate is "(x,y)", so that means, "(-1,4)" means that x = -1 and y = 4. We can substitute y1 for 4 and x1 for -1, and m for -5 since m is the slope. Plugging that information into the Slope Form Formula we get "y - 4 = -5(x - (-1))". We know that a negative with a negative turn positive, so we can use this information to change the formula to "y - 4 = -5(x + 1)". Now we distribute and simplify, these steps are shown below.

y - 4 = -5(x + 1)

y - 4 = -5x -5

y - 4 + 4 = -5x - 5 + 4

y = -5x - 1

Now that we have simplified it, we can see that the slope is -5 and the -1 is the y-intercept. To check this is a linear equation is to graph it, or substitute three x-coordinate or y-coordinates and draw a line. In conclusion, the equations is y = -5x - 1.

Step-by-step explanation:

4 0
2 years ago
The product of two factors is 7,200.if one of the factors is 90,what is the other factor?
Eddi Din [679]

Ok. Something times 90 = 7200.


Let something = x


90x = 7200


Divide both sides by 90.


90x/90 = 7200/90


x = 80


The other factor is 80.


5 0
3 years ago
Write an equation that relates the angle in a triangle. The measure of angle A is 45 degrees. The measure of angle B is b degree
Korolek [52]
Since the interior angles of a triangle equal 180°, then 180-45=135.

Then you would use 135 to find the remaining two angles: b+3b=135.
4b=135.

Divide to find b. And the plug in whatever b is for the to figure out Angles B and C.

However, I believe the equation it's looking for is: 180=45+b+3b OR 45+4b=180
7 0
3 years ago
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