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Shalnov [3]
4 years ago
8

Dialations Guided PracticePlease Answer!!

Mathematics
1 answer:
ELEN [110]4 years ago
4 0
Why aren't you at school thats my answerquestion
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In the figure, PR = 15x – 11 and PQ = 3x + 6. Find QR in terms of x.
Kryger [21]

Answer: 12x - 17

Step-by-step explanation:

To find QR subtract PQ from PR

15x-11 -(3x+6) ---> 15x - 11 - 3x -6 = 12x -17

6 0
3 years ago
What is the factored form of the function f(x)=x^3+8x^2+5x−50?
Inga [223]

Answer:

the factors of  f(x)=x^3+8x^2+5x-50 are (x-2)(x+5)(x+5)

Step-by-step explanation:

We need to factorise the function f(x)=x^3+8x^2+5x-50

If a number is a factor of this function than it must be completely divisible by last co-efficient. Our last co-efficient is -50

Checking few numbers:

f(1)=(1)^{3}+8(1)^2+5(1)-50\\f(1)=1+8+5-50\\f(1)=-32\\Now \ putting \ x= 2 \\f(2)=(2)^{3}+8(2)^2+5(2)-50\\f(2)=8+8(4)+10-50\\f(2)=8+32+10-50\\f(2)=0

So, f(2)=0 which means x-2 is a factor of the given function. Now we will perform long division of x^3+8x^2+5x-50 by (x-2) to find other factors

The long division is shown in figure attached.

After long division we get: x^2+10x+25

The equation x^2+10x+25 can be further simplified as: (x+5)(x+5) or (x+5)^2

So, the factors of  f(x)=x^3+8x^2+5x-50 are (x-2)(x+5)(x+5)

3 0
4 years ago
A unicorn whose mass is 65 kg is moving at a speed of 4 m/s. What is the unicorn's kinetic energy?
horrorfan [7]

Answer:

KE = 520 J

Step-by-step explanation:

KE=\frac{1}{2}mv^2\\KE=\frac{1}{2}*65*4^2\\KE=\frac{1}{2}*65*16\\\\KE=520J

4 0
3 years ago
A passenger train has 812 people seated. Each train seats 70 people. So there are 11 train cars filled. How many people are in c
Snowcat [4.5K]
The answer I’m pretty sure is 42
8 0
3 years ago
A scale drawing of a bedroom is shown below. The scale is 1 : 30.
marishachu [46]
So scale is 1:30
that mens that if the legnth of a scale wall is x then the legnth of the realll wall is 30x

legnth=3 inches
width=4 inches

actuall is
legnth=3 times 30 inches=90 inches
width=4 times 30 inches=120 inches

area=legntht imes width
90in times 120in=10800 in^2

answer is area=10800in^2
8 0
3 years ago
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