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2 years ago

7

Solve -20 - 5 > 3. Which graph shows the solutions?

1 answer:

Trava [24]2 years ago

7 0

Answer:

Third option is correct

Step-by-step explanation:

Given: $-2a-5>3$

To choose: the correct option

Solution:

$-2a-5>3$

$-2a>3+5\\-2a>8$

Multiply both sides by - 1

$2a$

For $a$ , it includes all numbers less than $-4$

The graph is as follows:

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Solve x2 + 2x + 9 = 0

Keith_Richards [23]

$x^2+2x+9=0 \\ \\
a=1 \\ b=2 \\ c=9 \\ b^2-4ac=2^2-4 \times 1 \times 9=4-36=-32 \\ \\
x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-2 \pm \sqrt{-32}}{2 \times 1}=\frac{-2 \pm \sqrt{-16 \times 2}}{2}=\frac{-2 \pm 4i\sqrt{2}}{2}=-1 \pm 2i\sqrt{2}$

The answer is D.

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2 years ago

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Help please, i am struggling on how to solve!

Elina [12.6K]

Answer:

$x=3$

Step-by-step explanation:

The hypotenuses are equal in length of both triangles.

$13=4x+1$

$13-1=4x$

$12=4x$

$12/4=x$

$3=x$

6 0

3 years ago

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Which of the following is one of the factors of the polynomial

RUDIKE [14]

Answer:

5x-2

Step-by-step explanation:

15x^2-x-2

15x^2+5x-6x-2

factorize

5x(3x+1)-2(3x+1)

Sol: (3x+1)*(5x-2)

7 0

2 years ago

Approximate the square root of 44 to the nearest tenth

exis [7]

10x=44 x=44 so the square root of 44 is 44 im in 6th grade and i knew that wow

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2 years ago

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Find the degree measures of the next two positive and the previous two negative angles that are coterminal with the angle 75°.

AlladinOne [14]

9514 1404 393

Answer:

435°, 795°
-285°, -645°

Step-by-step explanation:

Add or subtract multiples of 360° to find coterminal angles.

<u>Positive</u>

75° +360° = 435°

75° +2×360° = 795°

<u>Negative</u>

75° -360° = -285°

75° -2×360° = -645°

5 0

3 years ago