Mathematics High School

(x + 5)+(4x - 7)
adding and subtracting polynomials ​

Answers

Answer 1

Answer:

x+5+4x-7=0

5x-2=0

5x=2

x=2.5

Answer 2

Answer:

x+4x+5-7

5x-2

this is answer

Related Questions

Directions: (a) Identify the parent function and (b) describe the transformations.

Answers

Parent function: y=2^x
Transformations:
Reflection over x-axis
Vertical stretch of 3
Right 1
Up7

Given the function g(x) = 8x − 2, find g(−2) and g(4).
Group of answer choices

g(−2) = −18 and g(4) = 10

g(−2) = 14 and g(4) = 10

g(−2) = −18 and g(4) = 30

g(−2) = 14 and g(4) = 30

Plz, help asap!!!!! Very much appreciated.

Answers

Answer:

-18, 30

Step-by-step explanation:

8 × -2 = -16

-16 - 2 = -18

8×4=32

32-2=30

hope this helps! :)

The highway mileage (mpg) for a sample of 8 different models of a car company can be found below. Find
the mean, median, mode, and standard deviation. Round to one decimal place as needed.
20, 22, 26, 27, 30, 31, 35, 35
Mean =
Median =
Mode =
Standard Deviation =

Answers

Mean = 28.3 , Median = 28.5, Mode = 35, Standard deviation = 5.2

(All of the above are rounded off to one decimal place)

How to find mean, median, mode ?

The given data are : 20, 22, 26, 27, 30, 31, 35, 35

We know that, mean = (sum of samples)/(no. of samples)

                                   = (20+22+26+27+30+31+35+35)/8

                                   = 226/8 = 28.25 = 28.3 (approx)

Here, median = (sum of 4th & 5th sample)/2

                       = (27+30)/2 = 57/2 = 28.5

Since 35 appears highest number of times, i.e. 2 times, then we can say that mode is equals to 35

What is the required standard deviation ?

Standard deviation = √{(20-28.3)²+(22-28.3)²+(26-28.3)²+(27-28.3)²+(30-28.3)²+(31-28.3)²+(35-28.3)²+(35-28.3)²}/8

= √{68.89+39.69+5.29+1.69+2.89+7.29+44.89+44.89}/8

= √(215.52/8) = √(26.94) = 5.190 = 5.2 (approx)

Learn more about mean, median, mode, and standard deviation here :

https://brainly.com/question/21498951

#SPJ2

helpp please! i don't understand this

Answers

Answer:

Step-by-step explanation:

Remark

This is actually a six sided figure. That really doesn't matter, but it's interesting to observe. It goes a long way to explaining what is going on. The trick to exterior angles is that as long as the figure is convex ( a closed figure whose lines do not cross), the exterior angles add to 360.

Once you know that, then you know that this figure must have 6 exterior angles and no matter how they are made, their total is 360.

Equation

n + n + n + n + 90 + 90 = 360          Combine like terms.

Solution

4n + 180 = 360                                 Subtract 180

4n = 360 - 180

4n = 180                                            Divide both sides by 4

4n/4 = 180/4

n = 45

Note

Not a simple problem. Thanks for posting

Jan loves pillows and decides to make throw-pillows for her new sofa and bed. The pillows will be in the
shape of an isoceles triangle. She wants to trim each pillow with white lace. The base of each triangle is
7 inches. Jan purchases a 310-inch roll of lace trim and wants to make at least 6 pillows. What is the
maximum length possible for each leg of the triangle?
a. 20.3 inches
b. 21.4 inches
C. 22.3 inches
d. 24.3 inches

Answers

Answer:

C. 22.3 inches

Step-by-step explanation:

Simon had $15 to spend for lunch. He bought a large orange soda for $3.25 and a
cheeseburger for $11.95. When he reached in his pocket to pay, he found another
$4.25 to use towards his bill. How much money did Simon have after paying for
lunch?

Answers

Answer:

$4.05

How:

1. $15 + the extra $4.25 = $19.25

2. $3.25 + $11.95 for the meal = $15.20

3. $19.25 - $15.20 =  $4.05

Simon had $4.05 left after paying for lunch.

need help again !!!! Anyone plzzzz ?

Answers

Answer: D

A good trick to have up your sleeve is to just memorize that the equation of a like is (y - y1) = m * (x - x1).

This equation describes a point that passes through (x1, y1) with a slope m. This point (x1, y1) does not have to be on the y-axis. Also, since the question told us they want m = slope = -1/4, all we have to do is plug stuff in.

(y - y1) = m * (x - x1) => (y - 4) = -1/4 * (x - 4), or answer D. Also note that the normal ‘x’ and ‘y’ here are variables. We can solve this equation for ‘y’ to give a more traditional format: y = -1/4x + 5.

Johanna is online shopping for a dress she really wants. The original cost of the dress is $50. She saw that exact same dress on sale for $34.What is the percent decrease for the dress Johanna wants to buy? Explain in writing/typing how you would solve the problem.

Answers

Answer:

32%

Step-by-step explanation:

50-34=16

16/50=0.32

0.32 x 100= 32

what is the simplified version of 4+5y-6y+y

Answers

Hi the answer is 4 hope this helps
The answer is just 4 because 5y-6y= -1y and -1y + 1y= 0. So the answer should be just 4

HI GUYS PLEASE HELP WILL MARK YOU BRAINLIEST IF YOU HELP!! Distribute & combine like terms

Answers

Answer:

1: 25c+10

2: 29a+18b

3: -2b+24n+11-12m

4: 23m+10

5: 8x+3y+16

Value of people so that the expression 3(4+n) is equipment to 3(n+p) ​

Answers

3(n+p) = 3(4+n)
3n+3p = 12+3n
3p=12
p=4

Please need answer help help?!?!?

Answers

Answer:

5

Step-by-step explanation:

The square root of 25 is 5

16 What value could you put in place of the x to make it a function? * (8, 7) (7,-6) (-4,5) (x, 9)
a) 8
b) 7
c) 9
d) -4​

Answers

Answer:

(c) 9

Step-by-step explanation:

You can't have a repeated x-value in a function.

8 is taken by (8, 7)

7 is taken by (7,-6)

-4 is taken by (-4, 5)

9 is the only number that is not taken by any other point yet.

Remember that for a relationship to be a function it can't have repeated x-values. However, it doesn't matter to have the same x and y values!

Hope this helped!

Can someone help me on this

Answers

Answer:

the answers are

8) e. opposite sides

9) d. vertices

10) c. opposite angles

11) b. diagonals

12) a. consecutive sides

Original price of a computer: $2,600.00 Discount: 6%

Answers

Answer:2444(new price after discount)

Step-by-step explanation:looked it up

2600-156

156(discount amount)

Answer:

Step-by-step explanation:

1. What name is given to the shaded region?
a. sector b. segment c. arc d. radii

2. The line ST is called..........
a. an arc b. a chord c. a diameter d. a radius ​

Answers

Answer:

1.sector 2. chords

Step-by-step explanation:

chord of a circle is a straight line segment whose endpoints both lie on a circular arc. ... More generally, a chord is a line segment joining two points on any curve, for instance, an ellipse. A chord that passes through a circle's center point is the circle's diameter.

What is this, (2r-1)(r-1)? I'm so confused.

Answers

Answer:

It looks like the factored form of a polynomial

Step-by-step explanation:

In unfactored form, it would be this:

2r^2 + -2r + 1

(2r-1)(r-1)
=2r(r-1) -1(r-1)
= 2r^2-2r-r+1
=2r^2-3r+1

Luke's bill for breakfast at a restaurant was $80. He left a 20% tip. What was the amount of
the tip?

Answers

Answer:

$16

Step-by-step explanation:

Multiply $80 dollars by 20% or .2.

You should get $16.

A tip for the future is to move the decimal point to the left twice.

ie. 60%=0.6, 175%=1.75, 3%=0.03

Answer the photo below thanks

Answers

Step-by-step explanation:

3 of the 4 options aren't prisms

A is a cuboid

B is a cube

C is a prism

D is a pyramid

Answer:

The answer is D.

I hope this helps.

Have nice day/night!!!!(wherever you are)

Consider the line y = 7x-5.
What is the slope of a line parallel to this line?
What is the slope of a line perpendicular to this line?

Answers

Answer:

[tex]\boxed {\sf Parallel: 7 }[/tex]

[tex]\boxed {\sf Perpendicular: -\frac{1}{7}}}[/tex]

Step-by-step explanation:

First, identify the slope.

We are given the line y=7x-5.

This is in slope intercept form or y=mx+b where m is the slope and b is the y-intercept. So, the coefficient to x, or 7 in this case, is the slope.

m=5

Now, find the parallel and perpendicular slopes.

1. Parallel Slope

Parallel lines never intersect, so they have the same slope. A parallel line has a slope of 7.

2. Perpendicular Slope

Perpendicular slopes intersect to form right angles. They have negative reciprocal slopes.

Negate the slope: 7⇒ -7 Find the Reciprocal (flip the numerator and denominator: -7/1 ⇒ -1/7

A parallel line has a slope of 7 and a perpendicular line has a slope of -1/7.

Answer:

I'll help

Step-by-step explanation:

Parallel lines have the same slope so it will be 7.

And perpendicular lines if you multiply them together they have to add up to -1,

So 7 you change it to its opposite which is 1 over 7 and yeah just

Sin(45^degrees)=13/x

Answers

Answer:

x = 18.38

Step-by-step explanation:

sin 45 = 13/x

0.7071 = 13/x

x = 18.38

What is the best answer for h+5/3=2.2

Answers

Your answer would be 2.5 square root 34

* A helicopter's altitude changes by – 28 ft in 3 s.
What is the average change in the helicopter's altitude
each second? Show your work.

Answers

Answer:

-9.33 ft per second

Step-by-step explanation:

To calculate this, you just have to divide -28 by 3. When doing this, it will give the change per second or for every 1 second.

-28/3 = -9.33

Therefore, the average change in the helicopter's altitude each second is -9.33 ft.

A Sb BC
B ABS SCT
C BAT CTA
D BA CA

HELP ME

Answers

The answer is c I am sure of it no cap

Can somebody solve this

Answers

Answer:

A

Step-by-step explanation:

Hope this will help

Answer:

I think so it is option A)

I hope this might help u

what formula would you use to find the area of this figure?

Answers

Step-by-step explanation:

Find the area of a square or rectangle by multiplying the length times the width. This formula looks like l*w. If the length is 5 and the width is 2, the area is 10 square units. Calculate the area of a four-sided shape that is not a rectangle by multiplying the base (one of the sides) by the height.

I hope it's helpful!

Need help asap will give brainly

Answers

Answer:

d is the answer

Step-by-step explanation:

have a great day :D

Answer:

D is the answer

Step-by-step explanation:

180-(65+50)=

 65+50=115

 180-115=65

       

The usual price of an oven was $1139. Mrs Bala bought the oven at a 15%
discount. How much did she pay for the oven?​

Answers

1139*15%=170.85
1139-170.85=968.15
FINAL ANSWER= mrs.bala payed $968.15

Answer:

Mrs Bela paid $968,65 for the oven

Substitute t=3 and t=5 to determine if the two expressions are equivalent.

4(t+3) 4t+12


which statements are true? check all that apply.
A. the value of both expressions when t=5 is 32.
B. the two expressions are not equivalent.
C. the value of both expressions when t=3 is 15
D. the value of both expressions when t=5 is 23
E. the two expressions are equivalent
F. the value of both expressions when t=3 is 24​

Answers

Answer:

E

because both sides are equal when substituted by 3 & 5

WILL GIVE BRAINLIST TO CORRECT ANSWER

3(10) + 2(x-4)

Answers

Answer:

2x+22

Step-by-step explanation:

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