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Tom [10]
3 years ago
12

Factor the expression 5x^2 -22x -15

Mathematics
1 answer:
Murljashka [212]3 years ago
3 0
5x^2-22x-15=5x^2\underbrace{-25x+3x}_{-22x}-15\\\\=(5x^2-25x)+(3x-15)=5x(x-5)+3(x-5)\\\\=\boxed{(x-5)(5x+3)}

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Suppose a city with population 600,000 has been growing at a rate of 3​% per year. If this rate​ continues, find the population
andrezito [222]

Answer:

The answer should be around 1,149663 (Rounded off to the nearest whole number. Also if a population has a remainer you usually add it as 1. This is because these are people)

Step-by-step explanation:

First step involves listing the formulas being used:

600,000= population, 0.03= growth rate 22years= period

Therefore, we take the 600,000 and multiply by 1+0.03 ^22(to the power of 22 or period)

So, 600,000(1+0.03)^22

=1,149662.045 /1,149663

Hope this helps!

6 0
2 years ago
Please help, I need an explanation on how to do this type of problems. I've been at this assignment for the whole day and I'm ne
laila [671]

Answer:

See image

Step-by-step explanation:

To graph the inequality

-2x + y >= -10

Change it to y = mx + b form, use a solid line (bc of the "or equal to" underline)

y >= 2x - 10 We have y-intercept at -10 and slope 2/1, shading goes above the line.

The other graph is an absolute value graph; it has a v-shape. The 7 makes it stretched 7 times taller (and skinnier) the -4 by the x shifts the whole graph to the right 4 units. The -4 at the end of the equation shifts the whole graph down 4 units. See image. The shading goes above the V (kind of looks like inside)

The solution to the system is where the shading of the two overlap. It is mostly the shading for the absolute value graph except for a tiny triangle at the bottom. See image.

4 0
2 years ago
What do I need to make on my next quiz if I have an f and quizzes are 30% of our grade?
hram777 [196]
Make more than a 80 on quizzes and you should be fine 75 lowest possible
3 0
3 years ago
Factor out the gcf 63+45b
DerKrebs [107]

Answer:

GCF is 9

Step-by-step explanation:

Factor out 9 and divide what's in the parentheses by 9

9(7+5b)

3 0
3 years ago
Pls help put formula as well ( u don’t have too but if u can pls do ) giving brainliest !
Roman55 [17]
1. 198.56
Step-by-step explanation:
To find the volume of a cylinder, you need to find the area of the cross-section (one of the circles on the side) and multiply it by the length.
Area of the circle = π = π x (5.3/2) x (5.3/2) = π x 2.65 x 2.65 = 7.0225π
Volume of the cylinder = 7.0225π x 9 = 63.2025π = 198.56 2. V
=
a
base
×
h

V
=
π
r
2
×
h

V
=
π
(
d
2
)
2
×
h

V
=
π
(
6.6
2
)
2
×
9.9

V
=
338.7
c
m
3

Hopefully this helps!
7 0
3 years ago
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