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3 years ago

Which graph represents the solution to the compound inequality? -6 < 3x - 12<9

Mathematics

1 answer:

tatiyna3 years ago

4 0

Answer: The correct option is C

X value is between 2 and 7 on number line.

Step-by-step explanation:

Given compound inequality is -6<3x-12<9

To simplify the inequality:

Step1 : Add 12

-6+(12)<3x-12+(12)<9+(12)

6<3x<21

Step2: Divide by 3

$\frac{6}{3}$

2<x<7

Therefore, X value is between 2 and 7 on number line.

The correct answer is C

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Use the quadratic formula to solve 5x^2+2x-3

Lisa [10]

Assuming it equals 0
for
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$

given
5x^2+2x-3=0
a=5
b=2
c=-3

x= $\frac{-2+/- \sqrt{2^2-4(5)(-3)} }{2(5)}$
x= $\frac{-2+/- \sqrt{4+60} }{10}$
x= $\frac{-2+/- \sqrt{64} }{10}$
x= $\frac{-2+/- 8 }{10}$
x=(-2+8)/10 or (-2-8)/10
x=6/10 or -10/10
x=3/5 or -1

6 0

3 years ago

HELP PLZZZZZZZZZZZZZ

Ainat [17]

Answer:

its either 1 or 0 this was last year for me but

Step-by-step explanation:

it could be one because the x column is going up by one but it could also be 0 because the y is constant

4 0

3 years ago

Read 2 more answers

1+3+5+7+9+11+13+15+17+19+21 without adding

alexgriva [62]

Answer:

121

Step-by-step explanation:

1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 is a sum of first 11 odd numbers.

$\sf \boxed{\text{\bf Sum of first n odd numbers = $n^2$}}$

Here, n is the number of terms.

In this sequence, there are 11 terms.

Sum of first 11 odd numbers = 11²

= 11 *11

= 121

3 0

2 years ago

Read 2 more answers

A rectangular prism is 4 meters long, 5 meters wide, and has a height of 7 meters. What is its surface area?

Elis [28]

The surface area is all the areas of all the exterior faces in a 3D shape.

Doing all the possibilities, 4 * 5 * 2 , 5 * 7 * 2, 4 * 7 * 2 = total surface area
40 + 70 + 56 = 166 m^2

The answer is 2. 166 m^2

6 0

3 years ago

0. Round to the nearest whole number 70.50

denis-greek [22]

Answer:

I expect it to be 71

Step-by-step explanation:

Yeah...maybe

7 0

3 years ago