MATHEMATICS COLLEGE

You earn $28 for washing 4 cars. How much do you earn for washing 3 cars?

Answers

Answer 1

Answer:

Answer:

$21

Step-by-step explanation:

Answer 2

Answer:

Answer:

Step-by-step explanation:

First, find the unit rate for 4 cars. 28 divided by 4 equals 7. Then, just multiply 7 by 3 and you get 21

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For a certain candy, 15% of the pieces are yellow, 5% are red, 20% are blue, 20% are green, and the rest are brown. a) if you pick a piece at random, what is the probability that it is brown? it is yellow or blue? it is not green? it is striped?
Find two positive numbers such that the sum of the first and twice the second is 200 and their product is a maximum.
80 orders in 10 days = 8 orders in days
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Hey can you please help me posted picture of question

F(x) =x + 3/2
For the function f defined above, what is the value of f(-1)

Answers

$\bf \underline{ \underline{Given : }}$

f(x) =x + 3/2

$\bf \underline{ \underline{To \: be \: calculated : }}$

what is the value of f(-1) ?

$\bf \underline{ \underline{Solution : }}$

$\sf{f(x) = x + (3)/(2) }$

$\rightarrow \sf {f( - 1) = ( - 1) + (3)/(2) }$

$\rightarrow \sf{f( - 1) = ( - 2 + 3)/(2) }$

$\rightarrow \sf{f( - 1) = ( 1)/(2) }$

$\rightarrow \sf {f( - 1) = 0.5}$

Answer:

0.5

Step-by-step explanation:

Plug in -1 as x into the function:

f(-1) = -1 + 3/2

f(-1) = 0.5

Given f(x) = -4x - 10 and g(x) = x2 + 1 find f(-2) + g(3).

Answers

The answer to the question

The weights, in pounds, of the cats in an animal adoption center are normally distributed. If a random sample of cats is taken and the confidence interval is (7.9,12.7), what is the margin of error

Answers

Answer: 2.4

Step-by-step explanation:

Given : The weights, in pounds, of the cats in an animal adoption center are normally distributed.

The confidence interval is (7.9,12.7) (1)

Let $\overline{x}$ be the sample mean of the weights, in pounds, of the cats in an animal adoption center.

We know that the confidence interval for population mean is given by :-

$(\overline{x}-E,\overline{x}+E)$ (2)

From (1) and (2)

$\overline{x}-E=7.9-------(3)\n\n\overline{x}+E=12.7--------------(4)$

Subtracting (3) from (4), we get

$2E=4.8\n\n\Rightarrow\ E=2.4$

Hence, the margin of error is E = 2.4

Solve 14n2+32n=−34 by using the quadratic formula. Simplify any fractions. If there are multiple answers, list them separated by a comma, e.g. 1,2. If there is no solution, enter ∅.

Answers

Answer:

Step-by-step explanation:

Hello, first of all we can divide by 2.

$7n^2+16n+17=0\n\n\Delta=b^2-4ac= 16^2-4*7*17=-220 < 0 \ \ !!$

The discriminant is negative so there is no real solutions.

Thank you.

Which ordered pairs are solutions to the inequality −2x+y≥−4 ?Select each correct answer.

(0, −5)

(3, −1)

(1, −2)

(0, 1)

(−1, 1)

Answers

Answer:

(0,-5) , (1,-2) , (0,1) and (-1,1)

Step-by-step explanation:

-2x + y ≥ -4

y ≥ 2x - 4

Taking a point (0,-5):

-5 ≥ 0 - 4 , 5 ≥ -4

This situation is true.

Taking a point (3,-1):

-1 ≥ 2(3) - 4 , -1 ≥ 2

This situation is not true.

Taking a situation (1,-2):

-2 ≥ 2(1) - 4 , -2 ≥ -2

This situation is true.

Taking a point (0,1):

1 ≥ 0 - 4 , 1 ≥ -4

This situation is true.

Taking a point (-1,1):

1 ≥ 2(-1) - 4 , 1 ≥ -6

This situation is true.

The correct answers are

(−1, −1)

(5, −12)

(0, 1)

Have a nice day!

If x-13 = k and k = 3, what is the value of x?

Answers

Answer:

x = 16

16 - 13 = 3

***brainliest please

Step-by-step explanation:

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Convert 5 feet 4 inches to centimeters. (2.54 cm = 1 inch) *PLEASE HELPPPP

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