Question 8
Calculate the difference (4x2 + x - 5) – (5x2 - 1).

Answers

Answer 1

Answer:

x - 6

Step-by-step explanation:

(4x2 + x - 5) - (5x2 - 1)

According to the order of operations, parenthesis come first so we will solve what is in the parenthesis first.

Then we do the multiplication because it comes before addition and subtraction.

4x2 = 8

Now we have 8 + x - 5

Combine like terms and 8-5=3 so we have 3 + x

Now for the second one.

5x2=10

10-1=9

Subtracting this from the first expression we have:

3+x-9 =

x - 6


Related Questions

What is 11/12 divided by 1/3?

Answers

Answer:

2.75

Step-by-step explanation:

Answer: 2 3/4

Take the reciprocal of the second fraction by flipping the numerator and denominator and changing the operation to multiplication. Then the equation becomes

11/12×3/1=?

By multiplying this, you get 11/4. This simplifies to 2 3/4

can someone please help me on this?

Answers

Answer:

6.56

Step-by-step explanation:

ratio:

if        1 : 3.28

then  2 : 5.56

double it

Answer:

6.56 feet

Step-by-step explanation:

2 x 3.28=6.56

HTH :)

Eight children sit together at story time. Seven children sit in a circle and one child sits in the middle to tell the story. In how many different ways can the children sit

Answers

Answer: 40320

Step-by-step explanation: I think thats correct because the kids on the outside is 1234567 so then there is a kid in the middle.

The number of ways for the children sit will be 40,320.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

Eight children sit together at story time.

And, Seven children sit in a circle and one child sits in the middle to tell the story.

Now,

Since, There are 8 students.

Hence, The number of ways for the children sit = 8!

                                                                          = 40,320

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ2

Mia wants to borrow £6000 and repay it, with interest, after two years. she sees two offers for loans: offer 1 compound interest 3% per year offfer 2 compound interest first year 1% second year 3% mia says, iwill payback the same amount because the average of 1% and 5% is 3% is she correct?

Answers

Answer:

she is wrong, offer 2 results in lower interests

Step-by-step explanation:

total amount paid if offer 1 is accepted:

$6,000 x (1 + 3%)² = $6,000 x 1.0609 = $6,365.40

she will pay $365.40 in interests

total amount paid if offer 2 is accepted:

($6,000 x 1.01) x 1.05 = $6,060 x 1.05 = $6,363

she will pay $363 in interests

Compounding interest refers to interest that earns more interest itself, e.g. in the first offer, the $180 of interests charged for the first year will earn $5.40 in extra interests. While offer 2 only charges $60 in interests during the first year which will in turn earn $3 of interests. The difference between both offers is that interest charges in offer 1 earn more interests than the interest in offer 2 = $5.40 - $3 = $2.40

Please help!!! what’s the answer ? :((

Answers

Answer:

B

Step-by-step explanation:

Because there parallel

Explain how solving -7y > 161 is different from solving 7y > -161.

Answers

Answer: its different because when you add a negative sign to an answer it is valued less then a answer without the negative sign

Answer:

You use the division property of inequality to isolate the variable for both inequalities. You need to reverse the direction of the inequality symbol when dividing both sides by a negative number.

Step-by-step explanation:

edge

consider the equation 2,900=250+132.50T in this situation, what does the solution to this equation tell us?

Answers

Answer:

value of T = 20

Step-by-step explanation:

[tex]2900=250+132.50T\\2900-250=132.50T\\2650=132.50T\\2650/132.50=T\\20=T[/tex]

If this is the whole question so we can say that the value of T is 20 if there is more to the question than it help us tell what T signifies other than that it's just a plain value.

Can someone plz help me with this

Answers

Answer:

m<ABC = 40

m<FEC = 90

because the triangle is isoscles

Yo can I get some help with this problem

Answers

Answer:

45

Step-by-step explanation:

this person posted the same question twice and I detailed on the other.

Which graph represents the function below?

Answers

The answer to this problem is A

Answer:

It is A.

Step-by-step explanation:

Hope this helped have an amazing day!

Will give crown to the most helping

Answers

Answer:

15

19

23

35

Step-by-step explanation:

Just replace x with the numbers in the chart.

Answer:

15, 19, 23, 35

Step-by-step explanation:

Just substitute the variable.

Use elimination to solve each system of equations. 1. x + y = 4 x – y = 7

Answers

Answer:

Step-by-step explanation:

1(x+y=4)

-1(x-y=7)

x+y=4

-x+y=-7

x-x=4-x

-x=x=-7+x

4-x=-7+x

4-x-x=-7

4-2x=-7

-2x=-7-4

-2x/-2=-11/-2

x=5.5

What percentage is 26 out of 130?

Answers

Answer: 20%

I hope this helps, and Happy Holidays! :)

Answer:

20 percent

Step-by-step explanation:

26/130=0.2

multiply that by 100 equals 20

A jet liner flying east with the wind traveled 2800 km in 4 hours 40 minutes. The return trip, flying against the wind, took 7 hours. Find the rate of the wind. *

Answers

Answer:

its pog

Step-by-step explanation:

Answer:

stop cheating on ur WRMS ALgebra 1 math test

Step-by-step explanation:

ik where u live

Giving brainliest to whoever answers first:)
Solve the equation 2 3 x -1 5 x = x - 1.

Answers

Answer:

Step-by-step explanation:

23x-15x=x-1

8x=x-1

7x=1

x=1/7

A. 2x+5=23
B. x+2+5=23
C. x+x+5=23
D. 5x+2=23

Answers

Answer:

b

Step-by-step explanation:

lucky guess

Answer:

your answer is A

Step-by-step explanation:

if you look at the amount of "x's " you have , you put them together and you will get 2x and you add 5 and your answer 23...

hopefully i was helpful

Ana Sofia performed a transformation on APQR. She
recorded her transformation and the location of Q' in the
table. Point Q of APQR is located at (-2,3). Complete the
table to determine the values of a and b that make the
algebraic descriptions of her transformation true.

Answers

Answer:

a= 6 b=4

Step-by-step explanation:

-2+6=4

3+4+7


Can someone help please I’ll give brainliest!

Answers

Answer: F.

Step-by-step explanation:

First we have to determine the common factor for all of them, which in this case is 11.75. Then we have to multiply that by 40 which gives us 470.

Anthony is rowing a boat upstream the following equation models his speed f(x)=3x^2-6x-13

Answers

Step-by-step explanation:

Discriminant of quadratic equation ( ax² + bx + c = 0 ) could be calculated by using :

D = b² - 4 a c

From the value of Discriminant , we know how many solutions the equation has by condition :

D < 0 → No Real Roots

D = 0 → One Real Root

D > 0 → Two Real Roots

An axis of symmetry of quadratic equation y = ax² + bx + c is :

Let us now tackle the problem!

Given:

f(x) = 3x² - 6x - 13

Asked:

Domain = ?

Solution:

Velocity is a vector quantity.

Vector quantity has magnitude and direction.

Directon of vector is represented by the sign of the quantity

If x is the velocity of the boat relative to land , then:

The value of x could be positive , negative or zero.

Answer:

Anthony is rowing a boat upstream. The following equation models his speed: f(x) = 3x2 − 6x − 13, where x is the velocity of the boat relative to land. What is the domain of the function?

All real numbers

x ≥ 1

x ≤ −6

x ≥ −13

Step-by-step explanation:

it is a

There are 9 red and 6 green marbles in a bag. A child reaches in the bag and randomly takes one marble. What is the probability of that child getting a green marble?

a) .66

b) .40

c) .33

d) . 10​

Answers

Answer:

D homie

Step-by-step explanation:

A jumbo-size 90-ounce drink at a certain gas station has 760-calories. How many calories are there in a 28-ounce drink

Answers

I think it’s 236.4 calories

Answer:

Step-by-step explanation:

This is a proportion problem.

760 / 90 = x / 28            Cross multiply

90 * x = 760 * 28            Simplify the right side

90x = 21280                   Divide by 90

x = 21280/90

x = 236.4

Ethan Planted a tree that was 1.85 meters tall. Several years later, the tree is 5.30 meters tall. Which equation can be used to find x, the number of meters the tree has grown?
A. 1.85x= 5.30
B. 1.85+ x= 5.30
C. 1.85+ 5.30= x
D. 1.85 (5.30)= x

Answers

Answer: B. 1.85 + x = 5.30

Explanation:

The starting height of the tree was 1.85 meters. To find the number of meters the tree grew, you would subtract the current height from the previous height.
5.30-1.85=x. This equation is the same as 1.85 + x = 5.30 if you switch the 5.30 and x.

Answer:

x = B the answer is b

Step-by-step explanation:

Find the inverse function of f(x)=−32x+4
(Hint: f(x) is the same thing as y. Swap your x and y then get in slope-intercept form (y= form))

f−1(x)=____x+____=____

Answers

The answer equals 24

Rose plz. give me chance to explain

Answers

Answer:

who is Rose

Step-by-step explanation:

Who is my Bestfriend
1). Oooga Booga
2). Oliva
3). Lilly
4.) Ashley
5). Doydoy TAMAIR

GET IT RIGHT OR POINTS OR BRAINLIEST!!!!!!

Answers

Answer:

5) DOY DOY TAMAIR

Step-by-step explanation:

IM TAMAIR YESSS

Answer:

Ooga booga

Step-by-step explanation:

Bc the name sounds cool.

Will give crown thanks

Answers

Answer:

A is right

B is acute

C is obtuse

D is right

Step-by-step explanation:

90 is right

anything under 90 is acute

over 90 obtuse

Answer:

∠A: Right Angle.

∠B: Acute Angle.

∠C: Obtuse Angle.

∠D: Right Angle.

I hope this helped you

He comprado 10 rotuladores que me han costado 8 euros cuento costara cada rotulador

Answers

Answer:

0,8 euros

Step-by-step explanation:

Según la pregunta, 10 rotuladores cuestan ocho euros.

Ahora si

10 rotuladores cuestan 8 euros

1 marcador cuesta 1/10* 8 = 0,8 euros

Por tanto, cada marcador me costó 0,8 euros

Rebecca is researching cruises in order to plan a vacation She records the length and total cost of different cruises in a table

Answers

Answer:

is there anymore to this problem

Solve this pls. WILL AWARD BRAINLIEST TO BEST ANSWER!!!!!

Answers

Answer: 31.18

Step-by-step explanation:

The problem is focused on mainly the right triangle made up of points M, Q, and R.  This problem can be solved with the base formula, b = a · tan(β) where a = the length of line MR, β = m∠MQR, and b is the unknown length of RQ.  

Given:

RQ = 18 · tan(60°)

Point M is the midpoint of line PM and line MR.  Since MP is equal to 18, MR has to be 18 as well.  This means that the value of a is 18.

The vertex of ∠MQR is Q, which is 60°.

Step 1: Find the tangent of 60°

The tangent of 60° is √3

Step 2: Solve

RQ = 18 · √3

18 · √3 = 31.18

RQ is equal to 31.18

Please explain how to do this!!!!!

Answers

Point slope equation: y-y1 = m(x-x1)
Plug in the values
Y - 3 = -1/7( x - 3)
It would be D

Answer:

The answer is D: y - 3 = -1/7 (x+3)

Step-by-step explanation:

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