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2 years ago

I need help solving this problem system of equations

Mathematics

1 answer:

Nezavi [6.7K]2 years ago

5 0

Answer:

y= -6

Step-by-step explanation:

-4x and 4x are canceled out. -2y+8y= 6y. -12-24=-36

You are left with 6y=-36 . Divide from both sides and -36/6 is -6. So, y=-6.

Hope this helped.

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(20 points)

chubhunter [2.5K]

V = (1/4)(π* d² * h)
V = (1/4)(π * 10² * 12) 
V = (1/4)(1200π) 
V = 300π 
[ V ≈ 942 cubic units . . . . . to 3 s.f. ] 
V ≈ 942 cubic units

8 0

4 years ago

Read 2 more answers

According to recent reports, Apple Inc. holds 27.6% of the Tablet Computer market. Suppose a consumer research company believes

KonstantinChe [14]

Answer:

We don't have sufficient evidence to support the claim

Step-by-step explanation:

Null hypothesis:

$H_0: p = 0.276$

Alternate hypothesis:

$H_1: p < 0.276$

The P-value is 0.3064

0.3064 probability of finding a sample proportion lower than the one found.

The p-value is higher than the significance level of 0.05, which means that there is no sufficient evidence to support the claim.

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=2x%2B7-1%3D2x%2B7" id="TexFormula1" title="2x+7-1=2x+7" alt="2x+7-1=2x+7" align="absmiddle" cl

Goshia [24]

Answer:

Step-by-step explanation:

$2x + 7 - 1 = 2x + 7$

$= > 2x - 1 = 2x + 7 - 7$

$= > 2x - 1 = 2x$

$= > - 1 = 2x - 2x$

$= > x = - 1$

7 0

3 years ago

D={x | x is an integer and -3 < x <1

Anarel [89]

-2, -1, 0
These would be the options

4 0

4 years ago

Alright, here's one for Algebra:

Wewaii [24]

Let x= number rows
Then x + 5 = number of seats per row

x(x+5) = 126
X^2 + 5x = 126
x^2 + 5x -126 = 0; now factor or use quadratic:
(x+14)(x-9) = 0; so the answers are either -14, or 9, and since -14 is not possible in this case because you can't have a negative number of rows, the answer is 9 rows.

Check work: number of rows = 9, number of seats per row = 9+ 5= 14, and 9 x 14 = 126

3 0

3 years ago