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3 years ago

Someone help with this plllzz fast

Mathematics

1 answer:

kupik [55]3 years ago

3 0

Since you have the square root of x, you would need to square it to reverse the square root, and just have x. Then, you would have to square the 4 on the otherside, to get x=16

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the median weekly earnings for american workers in 1990 was $412 and in 1999 it was $549. Calculate the average rate of change b

mina [271]

The rate of change between 1990 and 1999 is 15.22

Step-by-step explanation:

The rate of change in this case is given by change in quantity divided by change in time

So,

$Rate\ of\ change = \frac{Increase\ in\ money}{Increase\ in\ time}\\=\frac{549-412}{1999-1990}\\=\frac{137}{9}\\=15.22$

Hence,

The rate of change between 1990 and 1999 is 15.22

Keywords: Rate of change, median

Learn more about median at:

#LearnwithBrainly

5 0

3 years ago

Armando has some coins in his pocket. 3 dimes 2 quarters 2 pennies 5 nickles What is the probability that he will pull out a nic

Licemer1 [7]

The probability that he will pull out a nickel, then a quarter, then a nickel is $\frac{1}{33}$

<u>Explanation:</u>

Given:

Number of dimes = 3

Number of Quarters = 2

Number of pennies = 2

Number of Nickles = 5

Total coins = 3 + 2 + 2 + 5

= 12

Probability that Armando will pull out Nickel first = $\frac{5}{12}$

After taking out Nickel, the total number of coins in the pocket will be 11

So,

Probability that he will pull a quarter = $\frac{2}{11}$

Total coins remaining = 11 - 1 = 10

Total Nickel remaining = 5 - 1 = 4

Probability that he will take our Nickel = $\frac{4}{10} = \frac{2}{5}$

Total probability = $\frac{5}{12} X \frac{2}{11} X\frac{4}{10}$

= $\frac{1}{33}$

5 0

3 years ago

A line passes through the points (–6, 4) and (–2, 2). Which is the equation of the line?

insens350 [35]

Answer:

y=-1/2x+1

Step-by-step explanation:

We can use the points to find the slope of the line.

Equation: y₂-y₁/x₂-x₁

2-4/-2-(-6)

2-4/-2+6

-2/4

-1/2 is the slope of the line

So the equation is y=-1/2x+b

We can substitute one of the x-coordinates and the matching y-coordinate into this equation:

2=-1/2*(-2)+b

2=1+b

1=b

b=1

Therefore, the equation is y=-1/2x+1

5 0

3 years ago

Solve the following: If 7a – 4b = 3, then b =

WITCHER [35]

Answer:

D (7a-3)/4

Step-by-step explanation:

7a – 4b = 3

Subtract 7a from each side

7a-7a – 4b = 3-7a

-4b = 3 -7a

Divide by -4

-4b/-4 = (3-7a)/-4

b = (7a-3)/4

7 0

3 years ago

Read 2 more answers

Find the value of x:

slega [8]

Answer:

x = 20

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Using ΔAHC , then

∠ACH = 180 - (2x + 100) = 180 - 2x - 100 = 80 - 2x

∠ECD = ∠ACB ( vertical angles are congruent ), thus

∠ECD = ∠ACH + ∠HCB, that is

3x = 80 - 2x + x

3x = 80 - x ( add x to both sides )

4x = 80 ( divide both sides by 4 )

x = 20

7 0

4 years ago