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3 years ago

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

Mathematics

1 answer:

Aleks04 [339]3 years ago

4 0

-20x is probably the correct answer

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Solve the quadratic equation below for the exact values of x:<br> 4x^2-5=75

grandymaker [24]

Step-by-step explanation:

$4 {x}^{2} - 5 = 75 \\ 4 {x}^{2} = 75 + 5 \\ 4 {x}^{2} = 80 \\ {x}^{2} = \frac{80}{4} \\ {x}^{2} = 20 \\ x = \pm \sqrt{20} \\ x = \pm 2 \sqrt{5}$

6 0

3 years ago

A community sports league is raising money by making custom shirts to sell at league games. They plan to sell the shirts for $14

11111nata11111 [884]

Answer:

A. (14 – 7)n – 55

Step-by-step explanation:

it cost $14 to make so $14 - $7 to make then you have to advertise it AFTER and it takes more money to advertise so, -55 so the answer would be:

(14 – 7)n – 55

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2 years ago

A rectangular swimming pool measures 50 meters in length and 25 meters in width.

Leya [2.2K]

Answer:

the interdependence. the only one of those things. I have been waiting for about the benefits. the bag. the bag. the only thing is to have a

Step-by-step explanation:

great time in my life and death of his own. the bag for the duration, and I am pretty sure hope so, I will have a lot. I will have the ability for you, I will be able. . Doctors in the world. I have a lot of fun. we will need the following

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3 years ago

Solve the inequality. Check your solutions.

Komok [63]

The inequality is

$7- \frac{2}{b}\ \textless \ \frac{5}{b}$

write 7 as 7b/b to have all the expressions in common denominator:

$\frac{7b}{b} - \frac{2}{b}\ \textless \ \frac{5}{b}$

$\frac{7b-2}{b} \ \textless \ \frac{5}{b}$

$\frac{7b-2}{b}- \frac{5}{b}\ \textless \ 0$

$\frac{7b-2-5}{b}\ \textless \ 0$

$\frac{7b-7}{b}\ \textless \ 0$

$\frac{7(b-1)}{b}\ \textless \ 0$

here b=1 is a root and b=0 is not in the domain of the expression, but it still has an effect in the sign of the expression.

the sign table of $\frac{7(b-1)}{b}$ is :

+++++++[0] --------[1] +++++

this means that for values of b to the left of 0 and to the right of 1, the expression is positive, and for values of b in (0, 1), the expression is negative.

that is $\frac{7(b-1)}{b}\ \textless \ 0$ for b∈(0, 1)

Answer: (0, 1)

8 0

3 years ago

Find an equation of the line parallel to y = -2x + 1 and that passes through the<br> point (-3,-4)

jek_recluse [69]

Answer:

y = - 2x -10

Step-by-step explanation:

y = -2x + 1 Slope , m = -2 parallel slope is the same

point slope form of new line

(y - -4)= -2 ( x - -3)

5 0

2 years ago