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ycow [4]
3 years ago
9

If x2 – 9 = 0, then x can only be equal to 3 True False

Mathematics
1 answer:
Sauron [17]3 years ago
4 0
The answer is True. X=3,-3
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Evaluate a + b to the 2nd power for a = 2 and b = 3
jarptica [38.1K]

Answer:

25

Step-by-step explanation:

You add 2+3 and get 5. Then you square it to get 25.

4 0
3 years ago
Read 2 more answers
Need help! Stuck on this help! help! help
nexus9112 [7]

The amount of fabric in inches Felicia need to make the actual shape for the comforter is 660 in²

<h3>What is a trapezoid?</h3>

It is defined as the quadrilateral having four sides in which two sides are parallel to each other, it is a 2-dimensional geometry.

We have a trapezoid in the picture shown with dimensions.

We know the area of the trapezoid is given by:

\rm A = \dfrac{a+b}{2} \times h

Here a = 15 cm, b = 22 cm and h = 11 cm

\rm A = \dfrac{15+22}{2} \times 11

A = 203.5 square cm

To make the square from the trapezoid, Felicia needs to cut two triangles from the both end, as shown in the figure.

The height of the triangle = 11 cm

And base length = (22-15)/2 = 3.5 cm

The area of the triangle = (11×3.5)/2 = 19.25 square cm

Area of the two triangles = 2×19.25 = 38.5 square cm

Now the amount of fabric  =  203.5 -  38.5 = 165 square cm

As the scale is given 1 cm = 2 in

1 cm ² = 4 in²

So, the amount of fabric in inches = 165×4 = 660 in²

Thus, the amount of fabric in inches Felicia need to make the actual shape for the comforter is 660 in²

Learn more about the trapezoid here:

brainly.com/question/8643562

#SPJ1

3 0
2 years ago
The radius of a circle is 9 square inches. What is the Area of the Circle? Round your answer to the nearest hundredth. A 56.52 B
kondaur [170]

Answer:

hi

Step-by-step explanation:

Find the area of the circles: 1. f. Answer: 379.94 square inches 2. ... Given the radius or diameter, find the circumference AND area of each circle to the nearest tenth. 5. r=9 m. C=56.52 m. A=254.34 square meters ... Round your answer to the nearest tenth. 50.2 square feet 9. A company is manufacturing aluminum lids.

7 0
2 years ago
Out of 50 basketball players trying to make a team, 5 will be chosen. 36 of the 50 are seniors and the remaining players are jun
AveGali [126]

Answer:   5503680

Step-by-step explanation:

The coach wants  2 senior out of 36 so he have

C₃₆,₂   =  36!/( 36 - 2 )!     = 36*35*34!/34!    =  36 * 35   = 1260

possibilities

Now he also wants 3 juniors out of 14

C₁₄,₃  =   14!/ (14- 3)!      =  14*13*12*11!/11!     =  14*13*12  = 2184

Now for each pair of senior (from 1260 outcomes) coach has 2184 possiblities therefore

Coach has

2184 * 1260 = 2751840    possibilities to choose from

Again as there are 2 senior to choose for captain we have to multiply by 2 to get the total  ways the team could be

2751840*2  = 5503680

6 0
3 years ago
Which line contains the point (1,-3)
Rzqust [24]
There are infinitely many lines that have the point (1,-3).

A line can be expressed as:

y=mx+b, where m=slope and b=y-intercept..

Our only restriction is that it passes through (1,-3) so

-3=1m+b

So as long as the sum of the slope and the y-intercept is equal to -3, that is one of the infinite number of lines that passes through (1, -3)

So we could also say b=-3-m then our infinite lines are:

y=mx-3-m, now any real value of m creates a specific line that passes through the point. ie the first few are

y=x-4, y=2x-5, y=3x-6 or even y=x√2-3-√2


4 0
3 years ago
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