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mixas84 [53]
2 years ago
13

Evaluate the expression when x = 12/7

Mathematics
1 answer:
lyudmila [28]2 years ago
6 0

Answer:

82

Step-by-step explanation:

1/3( x+9/7) + 3^4

Let x = 12/7

1/3( 12/7+9/7) + 3^4

PEMDAS says parentheses first

1/3( 21/7) + 3^4

1/3(3) +3^4

Then exponents

1/3(3)+81

Then multiply

1+81

82

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PLZ HELP MARKIN BRAINIEST!!!
Dahasolnce [82]

From the graph, when x = 1, y = 57,000.

Replace x with 1 in the equations and see if any of the Y 's equal 57,000 :

y = -2610.82(1) + 47860.82 = 45,250

y = 219(1)^2 - 6,506.78(1) + 59,385 = 219 - 6506.78 + 59385 = 53,097.22

y = 54041.5(0.9)^1 =  48,637.35

y = 10,504.6 (1.1)^1 = 11,555.06

The second equation is the closest. so try another x value to see if it is close to the Y value:

Let's try x = 14:

y = 219(14)^2 - 6506.78(14) + 59,385 = 42924 - 91094.92 + 59385 = 11,214.08

This is close to Y = 12,00 shown on the graph

SO the closest equitation is y = 219x^2 - 6506.78x + 59385

8 0
3 years ago
Two different box-filling machines are used to fill cereal boxes on an assembly line. The critical measurement influenced by the
defon

Answer:

0.1981

Step-by-step explanation:

See attachment for calculation

5 0
3 years ago
Q7.
VLD [36.1K]

Answer:

10

Step-by-step explanation:

Let c = sum of ages of all children.

mean age of all children = c/15 = 7

c = 15 * 7 = 105

The sum of the ages of all children is 105.

Let b = sum of ages of the 9 boys.

mean age of boys = b/9 = 5

b = 9 * 5 = 45

The sum of the ages of the boys is 45.

The sum of the ages of the girls is c - b.

c - b = 105 - 45 = 60

The number of girls is 15 - 9 = 6

mean age of girls = (sum of ages of the girls)/(number of girls) =

= 60/6 = 10

3 0
3 years ago
What is the answer to the equation -2x-8=-10
Oxana [17]
You need to get "x" by itself on one side

-2x-8=-10

Add positive eight on both sides---because its the opposite of negaitve

-2x-8+8=-10+8

-2x=-2

Divide -2 by -2

-2÷-2=1

<u>x=1</u>
6 0
3 years ago
A small bottle of water holds 7 ounces of water. How many ounces of water do 9 bottles hold?
White raven [17]

Step 1

Given;

A\text{ small bottle of water holds 7 ounces of water}

Required; How many ounces of water do 9 bottles hold?

Step 2

To do this we will use the ratio;

\frac{1\text{ bottle}}{9\text{ bottles}}=\frac{7\text{ ounces}}{x}\begin{gathered} x=7(9) \\ x=63\text{ ounces} \end{gathered}

Answer;

9\text{ bottles of water holds 63 ounces}

3 0
1 year ago
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