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3 years ago

HELP!!!! WILL MARK!!!!

Mathematics

2 answers:

vaieri [72.5K]3 years ago

7 0

1. A~ 2r^2 + 15r-50

2. B~ k^2 - 4k+3

Bumek [7]3 years ago

6 0

(2r - 5)(r+10)
=2r^2 +20r -5r - 50
=2r^2 +15r - 50
answer:
2r^2 +15r - 50 (first choice)

(k-3)(k-1)
=k^2 - 3k - k + 3
=k^2 - 4k +3

answer
k^2 - 4k +3 (second choice)

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The price of an athletic sweatshirt that normally cost $55 goes on sale for 25% off. What is the new selling price of the sweats

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Answer:

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2 years ago

In fig if x+y=w+z then prove that AOB is a line.

frez [133]

Answer:

As Given, x+y=w+z

To Prove: AOB is a line or x+y=180

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(linear pair.)

According to the question,

x+y+w+z=360

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∣ Angles around a point.

(x+y)+(w+z)=360

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(x+y)+(x+y)=360

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∣ Given x+y=w+z

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4 0

3 years ago

50 POINTS

MatroZZZ [7]

Answer:

see below

Step-by-step explanation:

(x) = 7 - 2x

Let t(x) =0

0 = 7-2x

Subtract 7 from each side

-7 = -2x

Divide by -2

-7/-2 =-2x/-2

7/2 =x

h(x) = 4x + 2

Replace x with x+3

h(x+3) = 4(x+3) + 2

Distribute

= 4x+12 +2

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3 0

3 years ago

Read 2 more answers

Factor completely 4u^2-28u+49

aleksandrvk [35]

Assignment: $\bold{Factor \ 4u^2-28u+49}$

<><><><><>

Answer: $\boxed{\bold{\left(2u-7\right)^2}}$

<><><><><>

Explanation: $\downarrow\downarrow\downarrow$

<><><><><>

[ Step One ] Rewrite $\bold{4u^2-28u+49}$

$\bold{\left(2u\right)^2-2\cdot \:2u\cdot \:7+7^2}$

[ Step Two ] Apply perfect square formula

Note: Perfect Square Formula: $\bold{\left(a-b\right)^2=a^2-2ab+b^2}$

$\bold{a=2u,\:b=7}$

$\bold{\left(2u-7\right)^2}$

<><><><><><><>

$\bold{\rightarrow Rhythm \ Bot \leftarrow}$

6 0

3 years ago

The sum of 8 times a number and 7 equals 9!

Vladimir [108]

Answer:

0.25*8+7=9

Step-by-step explanation:

8x+7=9

2/8=x

0.25=x

5 0

3 years ago