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3 years ago

V2+4v-21=0 (solve by factoring)

Mathematics

2 answers:

Genrish500 [490]3 years ago

7 0

Answer:

The answer is (v - 3)(v + 7).

Step-by-step explanation:

First, you have to elaborate it :

v² + 4v - 21 = 0

v² - 3v + 7v - 21 = 0

Next, you have to collect like terms :

v(v - 3) + 7(v - 3) = 0

(v - 3)(v + 7) = 0

frozen [14]3 years ago

6 0

Answer: (v + 7)(v -3)

Step-by-step explanation:

(v +7)(v -3)

v x v = v^2

v x -3 = -3v

7 x v = 7v

7 x -3 = -21

v^2 -3v +7v -21 = v^2 +4v -21 = 0

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For parallelogram LMNO, if angle L=4x-25 and angle N=3x+18, find angle M

RUDIKE [14]

L=N (because opposite angle of parllalogram is euqal)

4X-25= 3X+18
X =43

there for angle N=3×43+18
N=147

Now we know that the sum of the corresponding angle of a parllalogram is 180
N+M=180
M=180-147

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3 years ago

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weeeeeb [17]

Answer:

Solution given:

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3 years ago

James has $5.00 more than three times what Catherine has. Together they have $41.00. How much does each student have?

Tpy6a [65]

Hey.

acc'g to the conditions :

Let Catherine has x
and James has 5 + 3x

Then,

$5 + 4x = 41 \\ \\ \implies 4x +5 -5 = 41-5 \\ \\ \implies 4x = 36 \\ \\ \implies x= \dfrac{36}{4} \\ \\ \implies x = 9$

Hence

• Catherine has = x = $9,
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Thanks.

7 0

3 years ago

V2+4v-21=0 (solve by factoring)​

V2+4v-21=0 (solve by factoring)