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3 years ago

Please help me please i really need help please

Mathematics

2 answers:

VashaNatasha [74]3 years ago

7 0

The answer is
a = 4
b = -1

Kryger [21]3 years ago

6 0

A=4
b=-1 they were right

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Write the equation of the line that passes through the points (2 , -1) and has a slope of - 3

svetlana [45]

Answer:

y=-3x+5

Step-by-step explanation:

y=mx+b

m=slope or gradient (=-3)

y=-3x+b

Add your points

(2, -1)

-1=(-3 x 2)+b

-1= -6+b

-1+6=b

b=5

y=-3x+5

5 0

3 years ago

Read 2 more answers

PLEASE HELP

ahrayia [7]

Answer:

$(\sqrt{30}-2\sqrt{5})\ m$

Step-by-step explanation:

we know that

The length of the side, s, of a cube with a surface area, SA is equal to the formula

$s=\sqrt{\frac{SA}{6}}$

Step 1

Find the length of the side, s, of a cube with a surface area of $180\ m^{2}$

we have

$SA=180\ m^{2}$

substitute in the formula

$s=\sqrt{\frac{180}{6}}$

$s=\sqrt{30}\ m$

Step 2

Find the length of the side, s, of a cube with a surface area of $120\ m^{2}$

we have

$SA=120\ m^{2}$

substitute in the formula

$s=\sqrt{\frac{120}{6}}$

$s=\sqrt{20}=2\sqrt{5}\ m$

Step 3

Find the difference of the length sides

$(\sqrt{30}-2\sqrt{5})\ m$

6 0

3 years ago

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The park family is staying at a hotel near an amusement park for 3 nights the hotel costs 129$ per night how much will their 3 n

xxTIMURxx [149]

The cost will be $387

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3 years ago

The U.S. Bureau of Labor Statistics releases figures on the number of full-time wage and salary workers with flexible schedules.

Sindrei [870]

Answer:

61.70% probability that he or she will be between 23 and 52 years of age

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X between c and d is given by the following formula.

$P(c \leq X \leq d) = \frac{d - c}{b - a}$

The numbers of full-time wage and salary workers in each age category are almost uniformly distributed by age, with ages ranging from 18 to 65 years.

This means that $a = 18, b = 65$ . So

(a) what is the probability that he or she will be between 23 and 52 years of age?

$P(23 \leq X \leq 52) = \frac{52 - 23}{65 - 18} = 0.6170$

61.70% probability that he or she will be between 23 and 52 years of age

3 0

4 years ago

The slope of the line below is 2. Use the coordinates of the labeled point to find the point-slope equation of the line.

IgorLugansk [536]

Answer:

A. y + 6= -2(x - 4)

Step-by-step explanation:

Let A(a , b) be a point of the line

and m be the slope.

The equation of the line in Point-slope form :

y - b = m (x - a).

…………………………

Given :

Slope = -2

A(4 , -6)

Then

Point-slope equation : y + 6= -2(x - 4)

6 0

2 years ago