Mathematics High School

can someone help me? help​

Can Someone Help Me? Help

Answers

Answer 1

Answer:

Step-by-step explanation:

Remove the brackets

3x*x^2 - 5x*3x + 3x*1 - 2x^2+3x -7  

Combine

3x^3 - 15x^2 + 3x - 2x^2 + 3x - 7

3x^3 17x^2 +6x - 7

Related Questions

“An elephant charged 13.3 meters in 15 seconds.
At this rate, how far would the elephant move if it
could charge for 1 minute?”

Answers

Answer:

53.2 meters

Step-by-step explanation:

If an elephant charged 13.3 meters in 15 seconds, to calculate the distance charged by the elephant in one minute, the following steps will be arried out.

15 seconds = 13.3 meters

1minute (60 seconds) = x

cross multiply

15 * x = 13.3 * 60

15x = 798

Divide both sides by 15

15x/15 = 798/15

x = 53.2metres

Hence the elephant will charge 53.2 meters for 1 minute

-5+9(r+8)
pls show me the work

Answers

This is what I got, I haven’t done this in a while. Let me know if I’m correct and if you need any help
That is the best and correct answer to this problem the work

Okkkkkkkkkkkkkkkkkkkkkkkkk

Answers

Answer:

answers are in the boxes

What is 3 1/3 + 4 4/6=?​

Answers

Answer:

8

Add the fractions.

3 1/3 + 4 4/6 = 8.

The answer is 8.

Answer:

the answer is 8

Step-by-step explanation:

1/3 plus 4/6 is 1

1+3+4 is 8

Abigail is driving on a long road trip she currently has 13 gallons of gas in her car each hour that she drives her car is up 1 gallon of gas how much gas would be in the tank after driving for two hours how much gas will be left after T hours

Answers

Step-by-step explanation:

Well, if 1 gallon of gas = 1 hour then

2 hours would be 2 gallons so only 11 gallons of gas would be left in the tank and

13 hours would be 13 gallons, so 0 gallons of gas would be left in the tank

0.28 + 0.2x = 1.5 ÷ 3 · 6.2 − 1.3

Answers

0.28 + 0.2x = 1.5/3 • 6.2 - 1.3
Calculate the expression
0.28 + 0.2x = 3.1 -1.3
Subtract the numbers
0.28 + 0.2x = 1.8
Move constant to right hand side and change it’s sign
0.2x = 1.8 - 0.28
Subtract the numbers
0.2x = 1.52
Divide both sides by 0.2 because we want the x alone
X = 7.6

(Different answers)
X = 38/5
X = 7 3/5

what is the value of x?

Answers

Answer: 4

Step-by-step explanation:

subtract 10 from 18 , thats 8 then divide 8 by 2 and get 4.

During batting practice 12 balls were pitched to each player if 9 player came to practice how many balls were pitched?
If the player hit an average of 8 balls each, how many balls were hit?

Answers

Answer:

108 balls were pitched in total

Step-by-step explanation:

if 9 player came to practice and pitched 12 balls each. the equation would be 9*12=108

what is the reflection of (x, -y) across the y-axis.

Answers

Reflection across the y-axis makes the x-coordinate opposite.
(x, -y) —> (-x, -y)

10. Model with mathematics. The flow rate on the Otter River Run can

vary up to 90 gallons per minute from the target flow rate of 640 gallons

per minute. Write and solve an absolute value equation to find the

extreme values of the flow rate on the Otter River Run.

Answers

Answer:

Extreme Flow Rates = 730 gallons per minute | 550 gallons per minute

where,

Maximum Flow Rate = 730 gallons per minute

Minimum Flow Rate = 550 gallons per minute

Step-by-step explanation:

The extreme values of a quantity are the minimum and the maximum acceptable  values of that quantity. These values can be found by adding and subtracting the allowed variation from the target value, for maximum and minimum value, respectively. Therefore:

Extreme Flow Rates = Target Flow Rate ± Allowed Variation in Flow Rate

Extreme Flow Rates = 640 gallons per minute ± 90 gallons per minute

Extreme Flow Rates = 640 gallons per minute + 90 gallons per minute | 640 gallons per minute - 90 gallons per minute

Extreme Flow Rates = 730 gallons per minute | 550 gallons per minute

where,

Maximum Flow Rate = 730 gallons per minute

Minimum Flow Rate = 550 gallons per minute

Canada has a population that is about 1 10 as large as the United States. If Canada's population is about 32 million, about how many people live in the United States? Explain the number of zeros in your the answer.

Answers

Answer:

320,000,000

Step-by-step explanation:

Help me plz I don't get it !!!!!!!!

Answers

Answer: B.

It grows 3 inches per week

Answer:

B. 3

Step-by-step explanation:

The constant of proportionality is 3 because every week, the tree grows 3 more inches at a constant rate. The increase amount doesn't change. It's constantly growing by 3 inches.

I hope this helps!

!!20 POINTS!
What are the names of the rays in the figure?

Answers

ANSWER-

Option A.

Step by step explanation

Answer:

A.  RS, ST, RT, TS , SR TR

Step-by-step explanation:

Which algebraic equation models the English sentence, a number subtracted from 8 is equal to 4?

Answers

let's x represent a number

8-x = 4

Answer:

8-x = 4

Step-by-step explanation:

took the test and got it correct

Identify the range of the function shown in this graph

Answers

Answer:

[tex]0 \leqslant y \leqslant 5[/tex]

Help lol as soon as possible

Answers

multiply both sides
8x-96=3x+24
move the terms
8x-3x=24+96
collect like terms
5x=120
solution:
x=24

What is the value of the expression?
-16+ 12
-28
-4
4
28

Answers

The answer to this question would be twenty eight

Answer:

-4 is the corect answer because when your adding integers depending if your number is negative or positive your sum will either go right or left up or down

Step-by-step explanation:

as shown with the attached file

7) Line Segment PR is 5 ft. Find the length of Line Segment PQ and QR. (Hint: use the segment addition postulate.)

Answers

Answer:

PQ = 1 ft

QR = 4 ft

Step-by-step explanation:

From the picture attached,

Segment PR has been divided into two parts by a point Q.

Length of segment PR = 5 feet

Length of segment PQ = (15x - 2) ft

Length of segment QR = (5x + 3) ft

Since, PR = PQ + QR

5 = (15x - 2) + (5x + 3)

5 = 20x + 1

20x = 4

x = [tex]\frac{4}{20}[/tex]

x = 0.2

PQ = 15x - 2

     = 15(0.2) - 2

     = 3 - 2

     = 1 ft

QR = 5x + 3

     = 5(0.2) + 3

     = 1 + 3

     = 4 ft

In triangle ABC, the measure of angle B is 50 degrees. Give possible values for the measures of angles A and C if ABC was an acute triangle.

Answers

Answer:

Step-by-step explanation:

An acute triangle is a triangle that has all the measures of its angles to be less than 90° i.e none of the angles is greater than 90°

Since of angles in a triangle is 180, hence <A + <B + <C = 180

Given

<B = 50

50 + <A + <C = 180°

<A + <C = 180-50

<A + <C = 130°

Note that all the angles of an acute triangle are also different

Hence the possible values of A and C are 60° and 70° (since their sum must give is 130°)

Another possible values are 55° and 75°

60° and 70°

55° and 75°

PLEASE I NEED HELP :((((;((((

Answers

Answer:

Complete explanation is in the picture.

Step-by-step explanation:

the mean of 49 51 49 51 51 49 please help

Answers

Answer:

the mean is 50

Step-by-step explanation:

add up all the numbers which equals 300 then divide but the amount of numbers in this is 6 so that gives you 50

Answer:

50 is the mean

Step-by-step explanation:

When it ask for mean it ask you to add up all the numbers and divide by how many numbers their are. Their 6 numbers added together to make the total of 300.

49+51+49+51+51+49 = 300

300 / 6 = 50

How could you write the numerical expression “4x + 1.25” in words?

Answers

X multiplied by 4 plus 1.25

Calculate the sum and enter it, as a fraction in lowest terms, using the
slash (/) for the fraction bar. 4/15 + 7/9

Answers

Answer:

47/45 or 1 and 2/45

Step-by-step explanation:

47/45 or 1 2/45

4/15 +7/9

× 3/3. × 5/5

12/45 + 35/45

47/45

Convert 17.8 miles to km

Answers

Answer:

28.64632

also if you can can you please help me with my question

Answer:

not gonna lie

Step-by-step explanation:

28.64632 km

Please help I need this badly, I would greatly appreciate it.

Answers

Answer:I would say 3 but I am not 100% sure

Step-by-step explanation:

Plz help me with this

Answers

Answer:

BALLZ

Step-by-step explanation:

T3ST1CALZ

A shop owner did a survey to determine the ages of shoppers who made purchases in the shop. The results for one afternoon are shown. How many shoppers were between the ages of 20 and 30, including 20 and 30? What were their ages? 13, 19, 20, 30, 30, 31, 38, 48, 50, 52, 55, 56, 65, 67, 69, 69, 70, 75

Answers

Answer:

3

Step-by-step explanation:

sense were looking for the ages between 20 and 30 including 20,30 the number are 20,30,30,

Help me if someone can help

Answers

Answer:

1.11111111 is rational

1.567 is a rational number.

Step-by-step explanation:

1.11111111 is rational

1.567 is a rational number.

1.101101110 is irrational

so its choice 1 and 2

2(10 − 6) 2 + 3(12 − 10)

Answers

I think its 22 you have to add the parentheses first and then multiply from left to right of im correct

Answer:

hope this helped you

please mark as the brainliest (ㆁωㆁ)

At a track meet, the 3 members of a relay race ran a total distance of 3/8 of a mile. if each runner ran the same distance. how far did each person run?​

Answers

Answer:

.125 of a mile

Step-by-step explanation:

If the total distance was 3/8 of a mile and there were 3 runners, then each runner ran ___________________.

Change the 3/8 to a decimal

3/8 = 0.375 of a mile

Since there were 3 runners divide the total distance by 3

0.375/3 = 0.125

Each runner ran 1/8 of a mile or 0.125 of a mile.

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