Mathematics High School


Find the sum or difference.
(- 2h + 1) + 2(3h - 4) SHOW YOU WORK FOR POINTS AND BRAINIEST

Answers

Answer 1

Answer:  (- 2h + 1) + 2(3h - 4) = 4h -7

Step-by-step explanation:

First, remove unnecessary parentheses

- 2h + 1 + 2(3h - 4)

then distribute 2 through the parentheses

- 2h + 1 + 2(3h - 4) = -2h + 1 + 6h -8

Combine like terms

-2h + 1 + 6h -8 = 4h + 1 - 8

1-8= 7

So the answer is

4h - 7

Related Questions

Please Complete the problem below

Answers

Answer:

63 miles / hour = 0.0175 miles / second

Step-by-step explanation:

63 miles per hour also equals 0.0108225108225108 feet per second.

Which does not really help you if you don't know how to convert feet per second to miles per second.

How to convert miles per hour to miles per second is fairly easy, with a calculator.

1 mile per hour equals 0.000277777778 miles / second,

and if you multiply 0.000277777778 by 63, you get = 0.01750000001

Which can be rounded to get 0.0175

Hope this helps! <3

What is the actual slope of a line with the points (2, 8) and (9, 10)?

Answers

Answer: in fraction from its 2/7. In decimal form its 0.285714286

Step-by-step explanation: slope= 10-8/9-2

Please help me find this

Answers

So if you rotate 90 degrees counter clockwise, its (-2, 0)

Answer:

C: (-2,-2)

Step-by-step explanation:

if you move it down to the left 90 degrees it will move to where the D spot is and the coordinates are (-2,-2)

(-6x - 8) - (8x-9) subtract the expressions

Answers

Answer:

pic below

Step-by-step explanation:

(-6,0) ; slope = 2/3

Answers

Answer:Slope Intercept

Y=2/3m-6

Answer: y = 2/3x + 4

Work:

Jessica sold half of her comic books and then bought 7 more. She now has 15. How many did she begin with ?

Answers

Answer:

8

Step-by-step explanation:

15-7=8

8+7=15

Answer:

16

Step-by-step explanation:

1) Subtract 7 from 15. 15-7=8

2) Multiply 8 by 2. 8x2=16

Therfore your answer is 16.

PLEASE HELP
solve 2v^2+4v=6 by factoring.

Answers

Answer:

v = 1 or -3

Step-by-step explanation:

2v^2 + 4v = 6

take 2 as common

2(v^2 + 2v = 3)

v^2 + 2v = 3

Now,

v^2 + 2v - 3 = 0

v^2 - v + 3v - 3 = 0

v(v - 1) + 3(v - 1) = 0

(v - 1) (v + 3) = 0

v = 1 or -3

Answer:

<=>v²+2v-3=0

<=>v²-v+3v-3=0

<=>v(v-1)+3(v-1)=0

<=>(v-1)(v+3)=0

<=>*v-1=0

v=1

*v+3=0

v=-3

Manual is a word processor operator and makes $11.50 an hour. How much is his gross earnings for one week if he worked a total of 52 hours? Determine regular pay, and overtime pay

Answers

Given :

Manual is a word processor operator and makes $11.50 an hour.

To Find :

How much is his gross earnings for one week if he worked a total of 52 hours.

Solution :

The operator makes $11.50 in an hour.

So, amount he make if he work 52 hours in a week is :

A = $(52 × 11.50)

A = $598

Therefore, the weekly income for this week is $598.

division property of equality 3n-5=-8(6+5n)

Answers

Answer:

n= - 1

Step-by-step explanation:

3n - 5 = -8(6+5n)

3n-5 = -48 - 40n

3n+40n = -48 + 5

43n = -43

n=-1

True or False: A justification is a statement of the reason for each step in a proof.

Answers

Answer:

Step-by-step explanation:

False.

PLZ ANSWER ASAP!! ONLY IF YOU ARE CORRECT! (MORE THAN ONE ANSWER)

Answers

Answer:

C

Step-by-step explanation:

the VD warehouse is having a clearance sale. a CD player that originally sell for 60 is now priced tp 36 what is the percent decrease in the price​

Answers

Answer:

Im not 200% sure but i think its 11

i need help with this

Answers

Answer:

why do you need help?? It looks like you got it right....

Step-by-step explanation:

Answer:

I think it is right

Step-by-step explanation:

just full send it dude

2. Mrs. Robert’s class went to the zoo for a field trip. The bus driver drove 256 miles in 4 hours. What was the driver’s average speed per hour

Answers

Answer:

64

Step-by-step explanation:

256/4= 64
His average speed was 64 miles per hour

Karen buys a water heater on clearance. It is 65% off the original price. If Karen pays $350, what was the original price?

Answers

Answer:

227.5

Step-by-step explanation:

trust meh ._.

Pleas help meh I really need help!!!

Answers

You are correct with #8.

What is the negative solution for x(x+4)=0 ?

Answers

Answer:

x = -4

Step-by-step explanation:

x(x + 4) = 0

x = 0   ; x + 4 = 0

                 x = 0 - 4

                 x = -4

question is in picture​

Answers

Answer

Red is -19

Green is -24

Blue is -14

Purple is 17

Step-by-step explanation:

I don't really know what to do but...

Hope I helped.

Answer:

13,24,24,-10

Step-by-step explanation:

when the negatives are in the front it makes a positive number and two negative numbers can make a positive number also. but when the negative number is the second number it will make a negative number.

Nick wants to purchase a pair of binoculars that is on sale for $155.75. The sales tax rate in his county is 6.5% Calculate the amount of sales tax Nick will pay on the purchase. Round to the nearest cent if necessary.

Answers

Answer:

$10.12

Step-by-step explanation:

Step one:

given data

we are told that the cost of binoculars is $155.75

and also the sales tax is 6.5%

Step two:

We want to first solve for the sales tax which is 6.5% of  $155.75

=6.5/100* 155.75

=0.065*155.75

=10.12

Nick will pay a tax of $10.12

Also Nick will pay a total amount of

= 155.75+10.12

=$165.87

Answer: answere is 10.58

Step-by-step explanation:5.29+5.29=10.58

6/7 divided by 3 =

Answer please (work it out or not idc)

Answers

Answer:

Step-by-step

2/7

2/7. Multiply 6/7 x 1/3. Reduce the numbers so put a dash over 6 and 3 your solution is 2/7.

What is the vertex?
What is the domain?
What is the range

Answers

Vertex is (4,0)
Fhats all I know

What is the ratio of yellow paint to the red paint

Answers

It’s high..........................

One number is eight more than a second number. Five times the first is 8 less than 2 times the second. Find the numbers.
The value of the first number is?
The value of the second number is?

Answers

Step-by-step explanation:

let the 2 numbers be x and y.

x - 8 = y --(1)

5x = 2y - 8 --(2)

sub (1) into (2):

5x = 2(x - 8) - 8

5x = 2x - 24

3x = -24

x = -8

sub x = -8 into (1):

y = -8 - 8 = -16

first number is -8 and second number is -16.

Topic: algebraic equations + simultaneous equation

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

Mike bought five items for lunch that cost a total of $4.55. Hot dogs cost $1.10 each and cookies cost $0.75 each. Which of these systems of equations below could be used to determine h , the number of hot dogs, and c , the number of cookies, Mike bought for lunch?

Answers

Answer:

1.1h+0.75c=4.55---------------1

h+c=5--------------2

Step-by-step explanation:

Step one:

given data

total lunch items= 5

let hot dogs be h

and cookies be c

cost of hot dogs = $1.10

cost of cookies = $0.75

total cost = $4.55

Step two:

The linear model for the total cost is given as

4.55=1.1h+0.75c---------------1

and the model for the number of items is

h+c=5--------------2

The systems of the equation for the situation is

1.1h+0.75c=4.55---------------1

h+c=5--------------2

WILL GIVE BRAINLIST . Only answer if you know its correct thanks . question in picture .

Answers

Answer:

Step-by-step explanation:

Equation:

Total cost = $4 + $2(admission)

y = 4 + 2x

Initial value:

when x= 1 (one admission)

y= 4 +2(1) =6

so, $6

Rate of change:

m= $2

Which one A or B or C help pls!

Answers

Answer:

i think it c

Step-by-step explanation:

Answer:

def C

Step-by-step explanation:

As a researcher for a pharmaceutical company, you are designing a study to test the effectiveness of a new treatment for migraine headaches in comparison with the current leading medicine used to treat migraines. You have been given a list of 126 people willing to participate in the trial. The first 70 people are female; the remaining 56 are male. Preliminary research suggests that men and women respond differently to this new treatment.

d) Design an appropriate experiment to determine the effectiveness of the migraine medicine. Scan or take a picture of your design and upload it.

Answers

Answer:

hgttyuikiuhhiiookklo

GIVING BRAINLIEST AFTER TWO ANSWERS ARE GIVEN!!! WILL CHOOSE THE BEST ONE!!! ( the answer is either yes or no )

Answers

Answer:

no

Step-by-step explanation:

she did run/rise instead of rise/run

Malakai is attending lessons to learn how to play an instrument. She can attend 4 hours of lessons for a total of $100. assuming the price per hour is constant, how much would it cost for 9 hours of lessons? Show ur work

Answers

Answer:

$225

Step-by-step explanation:

$100/4hours=$25

$25 hours per one hour

So, $25x9=$225

Answer:

$225

Step-by-step explanation:

Diagonals bisecting each other pls do so smart people intelligence help answer

Answers

Answer: Since PR is the long line, PT is half of PR so 34/2 = 17

so PT=17

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