Mathematics High School

## Answers

**Answer 1**

**Answer:**

12

**Step-by-step explanation:**

84-54=30

30/2.5=12

## Related Questions

insert four arithmetic means between -1 and 14

### Answers

Answer:

The arithmetic means are;

6.5 , 2.75, 4.125 , 4.8125

Step-by-step explanation:

We start by finding the mean of the two numbers;

(14-1)/2 = 13/2 = 6.5

Next;

(-1 + 6.5)/2 = 5.5/2 = 2.75

Next

(2.75 + 5.5)/2 = 4.125

Next;

(4.125 + 5.5)/2 = 4.8125

need help on these 3 questions pls.

1. c^2 = 64 solve for c

2. 2b + 3 = 13 solve for b

3. 5x^2y^3 / 25xy^4 simplify

### Answers

**Answeryes i cn answer**

**Step-by-step explanation:**

i speakdh enlis

**Answer:**

**1.C²= 64**

√C² = √64

C = **8**

**2. 2b + 3 = 13**

grouping liked terms

2b = 13 -3

2b = 10

dividing through by coefficient of b

b =** 5**

**3.5x²y³/25xy⁴**

= **x/5y**

Write a proof for the statement.

If a quadrilateral is a square, then the quadrilateral is a rectangle.

geometric series

### Answers

the quadrilateral is also a rectangle as the rectangle and the quadrilateral have 4 sides.

if 2:4=x:16 find the value of x

### Answers

**Answer:**

x = 8 is the answer

**Step-by-step explanation:**

2:4 = x : 16

x = 8

**Answer: 8**

**Step-by-step explanation:**

given:

2:4=x:16

2×16= 4x

32/4 = x

x=8

The longest fingernails ever recorded were 8.650 meters. How long were the fingernails in a feet and inches?

### Answers

Answer: 28 feet and 4.5 inches

8 meters = 26.24...

.650 meters = 25 inches.

25 inches = 2 feet 1 inch

28 and 4.5 inches is your answer.

solve for x!! pls help need to show work marking brainliest!!

### Answers

**Answer:**

x= 161

**Step-by-step explanation:**

**Answer:**

x=45

**Step-by-step explanation:**

86+49=135

180-135=45

y =(x - 2)3 + 2

.

Plz help I do not understand

### Answers

**Answer:**

get photo math it will help alot

(b) A restaurant bill that comes to €200 is

to be divided equally among a group of

people. However, three people leave before

the bill is settled and the remainder of the

group have to pay an extra €15 each.

How many people were originally in the

group?

### Answers

**Answer:**

**it might be 13/3 or just 13**

**Step-by-step explanation:**

**try doing 200 divided by 15 **

A local hamburger shop sold a combined total of 490 hamburgers and cheeseburgers on Saturday. There were 60 fewer cheeseburgers sold than hamburgers.

How many hamburgers were sold on Saturday?

### Answers

**Answer:**

315 hamburgurs could be a possible answer

**Step-by-step explanation:**

Split 490 into an even half, then take away 60, thats for chesburguers. Then subtract that from 490 to find the hambugurs.

Express your answer in scientific notation.

### Answers

**Answer:**

14.4 × 10^13

**Step-by-step explanation:**

.........

32 + (-12 7/8) what is it I mak u brainlyiest or whatever

### Answers

**Answer:**

The answ is 20 7/8

**Step-by-step explanation:**

**Answer:**

44 7/8

**Step-by-step explanation:**

Hope this helps!

And just to make sure do you mean twelve and seven eighths?

select the correct equation rule

### Answers

Replace x in the equation and see which one equals the y values:

The answer is f(x) = 2x - 1

Help me asp 25 points and will mark

### Answers

**Answer:**

Slope = - 2

**Step-by-step explanation:**

Given equation is,

y= - 2x

If x=1, y= -2.

If x=2, y= - 4

Take such few points and plot the graph (1, - 2), (2, - 4)........

Draw a straight line through the points.

For slope, compare the equation with slope intercept form, y=mx + c

Here, c=0 and m=-2

Hope this helps!!

HELPPPP!!! pleaseeeeee Describe the transformation of F(x)=x2 represented by g

### Answers

Answer:g(x)=x-2+2

Step-by-step explanation:

Kid

6. If AB = CD, then CD = AB.

what is the postulate, or theorem

### Answers

**Answer:. Then either A = C and B = D, or A = D and B = C.**

**Step-by-step explanation:**

CAN SOMEONE PLEASE HELP ME IF YOU CAN

### Answers

**Answer: 6x^2+3x**

**Step-by-step explanation:**

Okay I need help:

F(x)=x^2-5 find f(3)

### Answers

f(x) = x^2 -5

Find f(3)

This means find x when it is 3 so just substitute 3 for x

f(3) = 3^2 -5

= 9 - 5

f(3) = 4

**Answer:**

f(3)=4

**Step-by-step explanation:**

f(x)=x^2-5

f(3)=3^2-5

f(3)=3*3-5

f(3)=9-5

f(3)=4

Mike made four of his truck payments late and was fined four late fees. If each late fee was $10, how much did he pay in late fees?

### Answers

Answer:

$40, how I got this is I took $10 * 4 late fees and there is your $40

A boat travels 160 miles in 5 hours. What is its speed in miles per minute?

—> Please show your work!

### Answers

**Step-by-step explanation:**

distance = 160mile

time =5 hour or 5×60=300 minutes

speed =distance /time

v=160/300

v=0.5334miles per minute

Which of the following are solutions

to the inequality b<-8 ?

### Answers

**Answer:**

- 15 and -10

**Step-by-step explanation:**

**Answer:**

the answers are b=-15

b=-10

Byron earns $11.00 per hour. How many hours will Byron have to work to earn $143.00?

7.7 hours

13.0 hours

14.3 hours

15.7 hours

### Answers

**Answer:**

13.0 hours

**Step-by-step explanation:**

$143 ÷ $11 (how he gets payed per hour) = 13 hours

Byron has to work 13 hours to earn $143 dollars

**Answer:**

[tex]Byron \: will \: have \: to \: work \: for \\ \: 13\: hrs \: to \: earn \: 143[/tex]

[tex]let \: the \: number \: of \: hrs \: = x \\ then \\ for \: the \: salary \: of \: \: 143 \: \\ the \: earning \: \times \: the \: time \: (x) = 143 \\ so \: 11x \: = 143 \\ x = \frac{143}{11} = 13.[/tex]

He used the steps below to simplify the expression

-1/4(8x+12)-(-2x+5)

=-2x-3+2x-5

=-8

Which statement is true about the steps that Pablo used to simplify the expression?

() He combined like terms inside the parentheses, distributed -1/4 over (8x+12), and then combined the remaining like terms.

() he combined like terms inside the parentheses, distributed -1/4 over (-2x+5), and then combined the remaining like terms.

() He distributed -1/4 over (8x+12), distributed 1 over (-2x+5), and then combined like terms.

() He distributed -1/4 over (8x+12), distributed -1 over (-2x+5), and then combined like terms

### Answers

c. distributed then combined

What is this I need help ASAP plsssssssssssssssssssssss

### Answers

**Answer:**

6 14/15

**Step-by-step explanation:**

change to improper fraction

change to common denominator

solve parentheses

subtract

[-7]+7=

i got zero but my thing says its wrong :/

### Answers

**Answer:**

**Step-by-step explanation:**

-7 + 7 should be equal to 0. Maybe you wrote the numbers or the sign wrong..?

**Answer:**

=0

**Step-by-step explanation:**

ese es la respuesta mijo

Temperature freezes at 0c. Write three numbers where temperature would be below freezing

### Answers

**Answer:**

-10

-45

-30.

Explain: You just need to add the negative symbol, if you don't like my answer, yiu can change, for ex: -2, -18,...

twelve mangoes are to be shared in the ratio of 2:3:1.How many mangoes will each person get

### Answers

4:6:2

this is because 2+3+1 is 6 and you divide that by 12 which is 2 and you times 2 to every ratio

If Chad drove 168 miles in 2 hours, how many hours will it take Chad to drive 840 miles traveling at the same rate?

### Answers

**Answer:**

10 hours

**Step-by-step explanation:**

First we need to find the rate Chad is driving. The rate is equal to distance/time, so we do 168/2, which is 84 mph. Then we have to find the time, which is distance/rate, so that would be 840/84, which is 10 hours.

**Answer:**

10 hours

**Step-by-step explanation:**

If Chad drove 168 miles in 2 hours than he drove 84 miles in one hour. If he drove 840 miles than you divide 840 by 84 and you get 10 hours. To check your work you can do 84*10= 840 miles 84=representing the miles per hour and 10=representing the amount of hours he drove.

Does the graph represent y as a function of x?

### Answers

Answer:

No this is not a function

Step-by-step explanation:

If you use the vertical line test which is just a line used across the graph. If we can draw any vertical line that intersects a graph more than once then it is not a function.

Find the Highest Common Factor of 42 and 90.

### Answers

**Answer:**

6

**Step-by-step explanation:**

Factors of 90 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

Factores of 42 are: 1, 2, 3, 6, 7, 14, 21, 42

6 is the greatest common factor.

**Answer:**

6

**Step-by-step explanation:**

The common factors of 42 and 90 are 6,3,2,1

Therefore the greatest common factor of 42 and 90 is 6

5. Alisha ran 9.60 km. One mile is

approximately equal to 1.6 kilometers. How

many miles did Alisha run?

### Answers

**Answer:**

**Step-by-step explanation:**

1 m is equal to 1.6 km so multiply to get about 6 miles