Mathematics High School

What is the difference of (-3.4x + 4.7) - (3 + 2.9x)?

A. -0.5x + 1.7

B. -6.3x - 1.7

C. -0.5x - 1.7

D. -6.3x + 1.7

Answers

Answer 1

Answer:

-6.3x +1.7

Step-by-step explanation:

(-3.4x +4.7) - (3+2.9x)

= - 3.4x - 2.9x +4.7 - 3

= - 6.3x + 1.7

Answer 2

Answer:

d

Step-by-step explanation:

Related Questions

What is the value of y in the equation 2(4y − 1) = 6? (4 points) a 0 b 1 c 6 d 8

Answers

Answer:

B; 1

Step-by-step explanation:

divide both sides of the equation by 2

4y-1=3

move the constant to the right

4y=3+1

calculate (add the numbers)

4y+4

divide both sides by 4

y=1

Answer:

b

Step-by-step explanation:

I need help with this problem

Answers

Answer:

in this case you can use protector also but

there is another way

Step-by-step explanation:

as we know sum of a triangle is 180 degree

so let's D= 2x,x

35+x+2x=180

3x+35=180

3x=180-35

3x=145

x=145÷3

x =46.06

may someone help me?

-2( x - 3 ) = 8x -3( 5 + x )
find the value of x

Answers

Answer:

0.45

Step-by-step explanation:

Hey uhm.. im not super good at math so i need help with this : 0.45/4.2 = x/14 solve for x

Answers

Answer:

x= 1.5

Step-by-step explanation:

A local school donated canned goods to help the community. Cans were packed into boxes each weighing 16.4 pounds. The volunteers packed 9 boxes. How many total pounds of food did they collect? A. 97.6 B. 147.6 C. 976 D. 1,476

Answers

Answer:

147.6 pounds of food

Step-by-step explanation:

Each box weighed 16.4pounds, if the volunteers packed 9 boxes, we need to calculate the total pounds of food collected. Using the equality postulate;

1 box = 16.4 pounds

9 boxes = x pounds of food

Cross multiply;

1 * x = 9 * 16.4

x = 147.6 pounds of food

Hence the volunteers collected 147.6 total pounds of food

The high for yesterday was 90°F, today the high is 78°F. What is the percent decrease in the
temperatures?

Answers

Answer:

The temperature from yesterday to today decreased by 12 degrees fahrenheit.

Step-by-step explanation:

Ummm... it's true :)

Adam currently runs about 40 miles per week, and he wants to increase his weekly mileage by 10%. How many miles will Adam run per week?

Answers

it would be 50miles i think or it would be 44

What is the slope of the line through (−1,−7) and (3,9)?

Answers

Answer:

The slope is 4.

Step-by-step explanation:

Point slope form is y-y1 over x-x1. I put the coordinates in like this.

9-(-7) over 3-(-1) so thats 9+7 over 3+1. 16 over 4 is 4.

Answer:

The answer is 2

Step-by-step explanation:

To celebrate the first day of school, Reagan brought in a tray of caramel brownies and walnut brownies. The tray had a total of 20 brownies, of which 10% were caramel. How many caramel brownies did Reagan bring?

Answers

Answer:

2 were caramel

Step-by-step explanation:

Students at Mendel Middle School are planning a fair for their school's fundraiser. Liam volunteers to help plan the event. The first month, he volunteered for x hours. The next month, he volunteered for 1 2/3 times as many hours as he had the first month. If he volunteered for a total of 40 hours, how many hours did he volunteer during the first month? Write an equation to represent the situation and solve.

Answers

Answer:

15 hours

Step-by-step explanation:

[tex]x[/tex] is the number of hours that Liam volunteered in the first month

The next month he volunteered [tex]1\dfrac{2}{3}[/tex] times the time he volunteered the first month.

Total time he volunteered in the two months is 40 hours so

[tex]x+1\dfrac{2}{3}x=40\\\Rightarrow x+\dfrac{5}{3}x=40\\\Rightarrow \dfrac{3x+5x}{3}=40\\\Rightarrow x=\dfrac{40\times 3}{8}\\\Rightarrow x=15[/tex]

Time he volunteered in the first month is 15 hours.

what is the slope of this equation? 6x+3y=24

Answers

Answer:

Slope of the given equation is

M = 8

The temperature at 6:00 pm was 15 degrees Celcius. The temperature dropped 2 degrees Celcius per hour. What was the temperature at 4:00 am

Answers

Answer:

-5 Celsius

Step-by-step explanation:

You find the hours between which is 10 then you multiply 10 to 2 and then subtract

A school assembly had 25 students in attendance, and 20% of them were first-graders. How many first-graders were at the assembly?

Answers

Answer:

5

Step-by-step explanation:

20%=0.2

25 x 0.2 = 5

What is the area of △MNP?
A. 40 m2
B. 60 m2
C. 68 m2
D. 127.5 m2

Answers

answer is B. 60 m2

Step-by-step explanation:

17²=15²+MP²

289=225+MP²

289-225=64

So... MP²=64.... MP=8

8×15= 120

120÷2=60

what is the reciprocal of 2 1/2

Answers

Answer:

2/5

0.4

Step-by-step explanation:

Answer:

0.4

Step-by-step explanation:

what is the value of angle k

Answers

Answer:∠k = 121°

Step-by-step

Exterior Angle Theorem:

The measure of an exterior angle is equal to the sum of the two remote interior angles.

Add 31° and 90° to get ∠K

a boat travels 36 miles in one hour. what is it’s speed in miles per minute

Answers

Answer:

What they said

Step-by-step explanation:

Whats 2/3 divided by 4

Answers

Answer:

(2/3) / 4 = 1/6 or 0.16666

Step-by-step explanation:

Which expression is not equivalent to the other three?
O 2x + 2+ 2x + 3x - 8
O 4 + 7x - 2
O-2 + 5x + 2x - 4
O ex-X-6

Answers

9514 1404 393

Answer:

  B.  4 +7x -2

Step-by-step explanation:

The simplified values of the expressions are ...

7x -67x +27x -67x -6

The second expression listed is not equivalent to the others.

Answer:

It's B. 4 + 7x - 2

Best of luck love

if there perimeters are the same 8x (2) = (4x+10) 14

Answers

Answer:252

Step by step explanation:

db

need help asap please!!

Answers

Answer:

Step-by-step explanation:

Your worth it love u

An unbalanced force causes a change in _________________ or _________________________.

50 POINTS!


A balanced force ____________________________________. It has a net force of _______________.

The UNIT for force is the _______________________________. It is abbreviated ________.

Answers

Answer:

What?

Step-by-step explanation:

If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction. I hope it helps !

Eight bottles of soda and four bags of chips cost $16. Six bottles of soda and 7 bags of chips cost $14. How much does a bottle of soda cost? How much does a bag of chips cost?

Answers

Answer: soda 1.75 dollars and chips is 0.50 dollars

Step-by-step explanation:you have to work out the question like a simultaneous equation so key s=soda and c=chips

8s+4c=16

6s+7c=14 make chips equal

56s+28c=112

24s+28c=56 Take the equations away

32s=56

S=56\32

S=7/4

S=1.75 sub that answer in the first equation

8*1.75=14

14+4c=16

4c=2

C=0.5

Solve the inequality: 1 < x-2<5
O [3,7]
O (3,7)
O [7,3]
O (7,3)

Answers

Answer:

3,7

Step-by-step explanation:

Answer:

(3, 7 )

Step-by-step explanation:

Given

1 < x - 2 < 5 ← add 2 to each interval

3 < x < 7

Since x cannot equal 3 or 7 then use parenthesis for limits, that is

solution is (3, 7)

Rob sells electronics and earns $625 per week, plus 12% of his sales. Last week, he sold $3250 worth of electronics. What was his total earnings for last week?

Answers

Answer:

$1,015

Step-by-step explanation:

Given that:

Weekly earning = $625

Commission = 12% of sales

sales made last week = $3250

Last week earning = weekly earning + commision on sale

Commission on sale = 12% of sales

Commission on sale = (0.12 * 3250) = $390

Last week earning = weekly earning + commision on sale

Last week earning = $625 + $390 = $1,015

The price of apples is $3.60 for 3 pounds. Write the price as a unit rate.

Answers

Answer:

B

Step-by-step explanation:

Answer:

B.

Step-by-step explanation:

Maura is going on a plane. She can't have a carry-on backpack that weighs more than 10 pounds. She weighed the items she wants to pack on a sensitive scale: book: 5.142 pounds, jacket: 3.6 pounds, backpack: 1.28 pounds. What is the total weight of these items? If all of these items are in her backpack, can she take all of these things?

Answers

Answer:

2.098 pounds total these pounds

The copy machine in the teacher’s lounge can print 3 single-sided pages in 16 seconds. Mr. Adams has 25 students in his class, and has to give three one-page quizzes on Friday. How long will it take the machine to print all of Mr. Adams’ copies if he needs to print one copy of each quiz for every student?

Answers

Answer:

150 seconds

Step-by-step explanation:

Write the statement "All right angles are congruent" in if-then form.

Answers

Answer:

If all right angles equal 90 degrees then all right angles are congruent.

if the angles are all right, then they are all congruent

The subtotal for a TV was $1,029.99. What does that mean?

Answers

that’s the price of the tv without tax
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