THIS IS URGENT I NEED HELP ASAP PLEASE

Answers

Answer 1

So you can only simplify like terms this means that number terms like 5 can’t be added or subtracted from 5x and the x is a separate term this is the same for x^2 and so on as these are different terms and can’t be added or subtracted to other terms, next the signs in between the brackets may change whether you add or subtract so be careful with those a negative and a positive make a negative, two positives make a positive, two negatives make a positive, always check the signs when answering so
No20) (2a+9)-(4a-9) would be 2a+9-4a+9 as the minus changes the signs this then equals -2a+18
Now you can do the harder ones
19) (5a^2+7a-1)+(3a^3-4a+6) =
3a^2+5a^2+3a+5
21) (3x^3+3x^2-4x+5)-(x^3-2x^2+x-4) = 2x^3+5x^2-5x+9
22) (2x^3-5x+1)+(4-6x+x^2) = 2x^3+x^2-11x+5

Related Questions

pls help on this it must be answerd quickly or i will not be able to go on the my dads boat on sunday, so pls pls answer quickly

Answers

Answer:

Step-by-step explanation:

I love boats

In a rectangle, the sides have measurements of 2x + 1 and 3x - 5 units Find an expression for the area of the rectangle, in square units.

Answers

Answer:

[tex] (6 {x}^{2} - 7x - 5) \: {units}^{2} [/tex]

Step-by-step explanation:

Area of rectangle = Product of sides

[tex] = (2x + 1) \times (3x - 5) \\ = 2x(3x - 5) + 1(3x - 5) \\ = 6 {x}^{2} - 10x + 3x - 5 \\ area \: of \: rectangle \: \\ = (6 {x}^{2} - 7x - 5) \: {units}^{2} [/tex]

Tammy wants to burn a total of 300 calories. So far, she has burned 289.3 calories. How many more calories must Tammy burn?

Answers

Answer:

10.7

Step-by-step explanation:

300 - 289.3 = 10.7 calories.

Answer:10.70

Step by step explanation

300-289.3=10.70

Write the mixed number as a decimal. 83/5

Answers

Answer:

Write the mixed number as a decimal. 83/5

16.6

Point R is on line segment QS. Given QS = 16 and QR = 9, determine the length RS.

Answers

Answer:

The length RS = 7

Step-by-step explanation:

Here, we are interested in determining the length of RS

Let’s have the line segment arranged as follows;

Q R S

where QR = 9 and QS = 16

From the arrangement, we can deduce that;

QS = QR + RS

Thus;

RS = QS - QR

RS = 16 -9

RS = 7

An equation that crosses the Y axis at -5 and crosses the X axis at five

Answers

Answer:

y = x - 5

Step-by-step explanation:

Slope-intercept formula:

y = mx + b

The value of b already given, it is -5, so

y = mx - 5

Points as per description:

(0, -5) and (5, 0)

The slope is:

m= (y2 - y1)/(x2 - x1) = (0+5)/(5-0) = 1

Then we get the formula:

y = x - 5

Find the value of x.
42°
130°
75°

Answers

Answer:

wdym

Step-by-step explanation:

the answer is 45’ hope this helps

(5x-2)^2 help asap pleaseee

Answers

Answer:

25x² − 20x + 4

Explanation:

(5x − 2)²

= (5x + −2)(5x + −2)

= (5x)(5x) + (5x)(−2) + (−2)(5x) + (−2)(−2)

= 25x² − 10x − 10x + 4

= 25x² − 20x + 4

the perimeter of a square can be found using P = n + n + n + n, where n is the length of one side of the square. Which equation could also be used to find the perimeter of a square

Answers

Answer:

P = 4n

Step-by-step explanation:

P = n + n + n + n

If you combine all the like terms you end up with:

P = 4n

The equation to find the perimeter of a square can also be expressed as 4n, where n is the side.

What is Square?

A square is a two dimensional figure which has four vertices, four sides and four angles.

Perimeter of a geometrical figure is the sum of the lengths of the boundary of shape.

Given that n is the length of one side of a square.

Perimeter is the sum of the side lengths.

Since a square has four sides,

Perimeter = 4 times the length of side

= 4n

Hence the perimeter of a square can also be expressed as 4n.

Learn more about Square here :

https://brainly.com/question/28776767

#SPJ2

If Sara had 5 apples and she ate 3 how many would Sara have?

Answers

Answer:

Step-by-step explanation:

5-3=2

Answer:

Sara would have 2 apples left

Step-by-step explanation:

5-3=2

The figure below is a rectangle. What is the value of x?

Answers

Answer:

1.8

Step-by-step explanation:

[tex]2x + 10 = 12x + - 8 \\ 10x = 18 \\ x = 1.8 \\ [/tex]

Answer:

1.8

Step-by-step explanation:

12x-8=2(x+5)

12x-8=2x+10

10x=18

x=1.8

1 sack of flour contains 21 cups. It takes 3 cups of flour to make a batch of cookies. How many batches of cookies can you make with TWO sacks of flour?

Answers

the answer would be 14...
1 sack = 21 cups.
so 2 sacks would equal 42 cups because 21x2= 42
and it takes 3 cups of flour to make ONE batch of cookies. So 42 divided by 3 is 14. And that’s how you get your answer.

Answer:

14 batches

Step-by-step explanation:

If 1 sack of flour = 21 cups, and 1 batch of cookies need 3 cups, all you have to do is find out how many batches can be made with 1 sack and double the number:

3 × _ = 21

21 ÷ 3 = 7

7 × 2 = 14

You can make 14 batches of cookies with 2 sacks of flour.

Hope this helped.

Evaluate
5-(x - 2) for x = - 1

Answers

step 1 - since x is equal to - 1 we can substitute negative one in place of x

5 - ( x - 2 )

substitute -

5 - ( -1 -2 )

step 2 - now solve

first solve the bracket

5 - ( - 1 - 2 )

therefore,

5 - ( - 3 )

solve

= 8

so the answer is 8

hope that helps !

what is the domain of the set (-3,5), (2,0), (7,-5)

Answers

The domain is all x-values.

The domain is -3, 2, 7

The range is all y-values

The range is 5, 0, -5

Best of Luck!

+ 2
5. Which of the following has the same
value as -10 +-3?
A-13
B-7
C13

Answers

Answer: -13

Explanation: When adding a negative number, you are actually subtracting and positive. In this case, you are simply subtracting 3 from -10 to get -13. Hope this helped!!

Glr to precisando muito da ajuda de alguém com isso aqui, pfv

Answers

Answer:11

Step-by-step explanation:

g(x) = 2x^2 + x-1, find f(3)

Answers

Answer:

the answer is 20

Hope it helps

find the product of 3 1/5 and 7 1/4. Express your answer in simplest form

Answers

10 and 9 over 20 is the correct solution

I forgot how to do these questions
HELPPPPPP

Answers

1. 5 2. 7 3. 6 simply add the images together to get your answer. I hope that helps

4+1=5
3+4=7
4+2=6
You add both the numbers together

It is roughly 8100 miles to fly from California to Australia. If it takes the plane 15 hours to reach its destination, how fast was the plane flying in feet per hour? (1mile = 5280 feet)
How many miles did the plane fly in one hour?

Answers

Answer:

Answer is 540 mph (miles per hour)

Step-by-step explanation:

by diving 8100 by 15, you get a quotient of 540

what is quotient of 6,484÷24

Answers

Answer:

270.16 repeated (only the 6 repeats there is only one 1)

Step-by-step explanation:

Answer: 6,484÷24=270 R 4

Question 5 Rocko paid $12.50 for 25 game tickets. Louisa paid $17.50 for 35 game tickets. What is the constant of proportionality? Express your answer in decimal form.

Answers

Answer: k = $0.50

Step-by-step explanation:

The data that we have is:

Rocko paid: $12.50 for 25 tickets.

Louisa paid: $17.50 for 35 tickets.

Now, the question asks to find the constant of proportionality.

A proportional relation can be written as:

y = k*x

where k is the constant, and in this case, y is the price and x the number of tickets bought.

Then replacing with the values above, we have:

$12.50 = k*25

then:

k = $12.50/25 = $0.50

And the other data:

$17.50 = k*35

K = $17.50/35 = $0.50

So we have the same k in both cases, this means that the constant of proportionality is k = $0.50

Which of the following numbers is divisible by 3 and 7?
O 396
O 399
O 402
O 405

Answers

b because it’s b good luck

Answer:

399

Step-by-step explanation:

396 is divisible by 3, but not 7.

399 is divisible by 3, and 7.

402 is divisible by 3, but not 7.

405 is divisible by 3, but not 7.

Solve the equation below for h v=πr^2h

Answers

Answer:

The answer is

[tex]h = \frac{v}{πr²} [/tex]

Step-by-step explanation:

v = πr²h

To solve for h divide both sides by πr²

That's

[tex] \frac{v}{πr²} = \frac{πr²h}{πr²} [/tex]

We have the final answer as

[tex]h = \frac{v}{πr²} [/tex]

Hope this helps you

Answer: h=0hr/2−3.141593r2+v

Step-by-step explanation:Hope this help

2 (3x + 6) = 3 (x - 10)

Answers

Answer:

x= -14

Step-by-step explanation:

When x is added to its square, the total is 30. Fond the value of x.
(With solution please)

Answers

Answer:

[tex]x=\frac{30}{(1+x)}[/tex]

Step-by-step explanation:

step one:

This is a word problem, we need to translate is it to mathematical terms before we solve

"When x is added to its square, the total is 30"

step two:

[tex]x+x^2=30[/tex]

[tex]x+x^2=30\\\\x(1+x)=30\\\\[/tex]

step three:

divide both sides by 1+x we have the value of x as

[tex]x=\frac{30}{(1+x)}[/tex]

helppp math sucksss

Answers

Answer:

H can't be a function.

Step-by-step explanation:

If x has more than one y then it doesn't pass the vertical line test and is not a function.

Question 3 of 10 Katerina is making picture frames of various widths for 5x7 photos. The diagram below shows what his picture frames look like. The colored rectangle is the frame with a width of 2 inches on all sides, the inner rectangle is the space for the picture. The polynomial expression 4x2 + 242 + 35 will calculate the total area of the frame and picture together for any value of L. What is the leading coefficient of this polynomial expression?

Answers

Answer:

leading co-efficent is 4

1
Robert has a piece of string that is 62 cm long. He cuts off 39 cm of the string.
How long is the string that is left?

Answers

Answer:

23cm

Step-by-step explanation:

62-39=23cm

Find the circumference of the circle. Round your answer to two decimal places, if necessary.

Answers

Use the Circumference of a Circle Formula:

C = 2πr

C = (Diameter)*π (since diameter = 2*radius)

In this case, the diameter is 44 miles

So the circumference is:

C = 44*π = 138.23 miles

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