Mathematics High School

1. A rectangle has side lengths of 3x2 + 5x - 1 and -7x+1. Which of the following expressions represents the area of the rectangle?
a. 3x²-21
b. 3x² - 35x-1
c. -21x³ - 38x²- 2x - 1
d. -21x³ - 32x² + 12x - 1

please help​

Answers

Answer 1

21x³-42x²+12x-1

[area of rectangle =length ×breadth

=(3x2 + 5x - 1)(-7x+1)

=3x²(-7x+1)+5x(-7x+1)-1(-7x+1)

=-21x³+3x²-45x²+5x+7x-1

=-21x³-42x²+12x-1

Related Questions

PLZZZZZZZZZZZ HELPPPPPPPP

Answers

Answer:

a>−12

hope it helps:)

find the value of given expression

=》
[tex] \sqrt[3]{343} \times \sqrt{1} [/tex]
​

Answers

Step-by-step explanation:

The answer will be 7 I hope this help you

1. y = x + 5
y = 6

2. y = x − 5
y = −x + 1

Answers

1.) 6=x+5
x=1

2.) -x+1=x-5
2x=6
x=3

Answer:

1. (1, 6)

2. (3, -2)

Step-by-step explanation:

Last week, Leah worked 25 hours on weekdays and 11 hours on the weekend. Which ratio compares the number of hours Leah worked on weekdays to the total number of hours she worked? A.25 : 11 B. 11 : 25 C. 25 : 36 D. 36 : 25

Answers

C. 25 : 36 because she worked 25 hours on weekdays and worked a total of 36 hours overall (25+11)

BRAINLESS!!! please answer and show your work for this
question...

A golf club which normally sells for $500 dollars is now on sale for 30% off. Determine the sale price

BEFORE TAX( use 13% tax rate) and the FINAL SELLING PRICE, including taxes.​

Answers

Answer:

All below

Step-by-step explanation:

1. Before tax

500*0.7 (30% off means 100%-30% of the price = 70% or 0.7) = $350

2. Final selling price

350*1.13 (100%+13% as the price after adding 13% of tax to subtotal) = $395.5

I Need Help Please!! (Geometry)

Answers

Answer:

3. 58°

4. 64°

5. 180°

Step-by-step explanation:

not completely sure bout number 5 but I think it's 180

3. 58
4. 64
5. 16 cm

Here’s what I could come up with

A snake slithers 25 km toward its prey in 30 minutes. what is the average speed (in km/hr) of the snake?

Answers

Answer:

50 km/h

Speed = distance/ time. 30 min= 0.5 hour.

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The net of a triangular prism is shown. Use the ruler provided to measure the dimensions of the net to the nearest half centimeter. Which measurement is closest tot he total surface of the triangular prism in square centimeters.?

Answers

Answer:

The total surface area of the figure is 516 square units.

Step-by-step explanation:

The net of the triangular prisms is attached. Remember, the total surface area refers to the area of each face of the volumetric figure. In this case we have 3 equal rectangles and 2 equal triangles.

The Area of the rectangles.A^1 = 3 (10 x 14) = 3 (140) = 420 u^2

   2. The Area of the triangles.

A^2 = 2(1/2 x 12 x 8) = 96 ^2

The total surface area is given by the sum of all these areas:

S= 420 + 96 = 516 u^2.

Express in the form 1 : n . Give n as a decimal. 16 : 12

Answers

Answer:

16.12

Step-by-step explanation: hope this helps

Divide them by 4

4:3

Using the variable n for the term, describe the sequence.

Answers

Answer:

3 + 5n

Step-by-step explanation:

This is an arithmetic sequence.

First term = a = 8

Common difference = d =Second term - first term

                                = 13 - 8

                                 = 5

Nth term = a + (n- 1)*d

              = 8 + (n -1) * 5

             = 8 + n*5 - 1 *5

              = 8 + 5n - 5

               = 8 - 5 + 5n

                = 3 + 5n

Help me ASAP!!!!!!!!!

Answers

Answer:

The answer is C

Step-by-step explanation:

C is the only option that represents the inequality 2x - 6 ≥ 6(x - 2) + 8.

p minus 11 equals 39

Answers

Answer:

p=50

Step-by-step explanation:

39 add 11

p - 11 = 39
p = 50

you gotta add 11 to both sides, the -11 and 11 cross out, and 39 and 11 add to 50

Determine if the two triangles are congruent. If they are, state how you know. SAS , ASA, AAS, SSS or HL

Answers

Step-by-step explanation:

1. SAS

2. SSS

3. RHS

4. SAS

5. RHS

6. SAS

7. ASA

8. SAS

9. ASA

10. SSS

what's the value of given expression

[tex] \sqrt{33 \times 3 + 1} [/tex]
​

Answers

I believe it’s 10

Explanation : Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

he drawing shows the view of the top of a building. What is the value of x?

Answers

Answer:

65 degrees

Step-by-step explanation:

The angles in a triangle must add up to 180 so you subtract 90 and 25 from 180 and are left with 65

What is (2i)^2.. explain

Answers

Answer:

-4

Step-by-step explanation:

sihshufhksfhsfhf,

HAHAHAA mine more Inspirational then benjamin tamaki's hahahaah

Evaluate 11.3v + 10.7w when v=7 and w=8

Answers

Answer:

164.7

Step-by-step explanation:

So if v= 7 and w=8, then the problem would become - 11.3 x 7 plus 10.7 x 8.

simplified, this would be 79.1 + 85.6, so add that and you should get 164.7

Someone help and please make sure it’s right

Answers

Answer:

50 would be the correct response.

Step-by-step explanation:

The two interior angles are the sum of the exterior angle. 50 + 50 is 100, so 50 would be correct.

NEED HELP ASAP! 15pts​

Answers

Answer:

B

Step-by-step explanation:

sorry if im wrong

It’s D. Have a nice rest of your day!

4. In ADEF, ZE is a right angle. If the side opposite ZD has a length of 17 and the length of the hypotenuse
is 26, which of the following is the value of ZD to the nearest degree?
(1) 33°
(3) 490
(2) 41°
(4) 57°

Answers

the answer would be 2, 41° i think

Make a graph of the situation.

The equation $y=15x+20$ represents the cost $y$ (in dollars) of a gym membership after $x$ months.

Plz help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Step-by-step explanation:

First graph a point at (0, 20) since that is the y-intercept. Then, at (1, 35) then at (2, 50) and draw a line connecting all three points. We graph them at these points because we know that for every month, we spend $15, so we go up by intervals of 15 for every month.

Which is the slope of the line with equation 7x−3y=21?


A) 3/7

B) -3/7

C) 7/3

D) -7/3

Answers

That’s the answer I hope this helps

PLEASE HELP ME!!!!
Like I have 8 assignments missing in math this is too stressful

Answers

Answer:

15

Step-by-step explanation:

5 x 3=15

Answer:

15

Step-by-step explanation:

6 divided by 2 is 3 and 21 divided by 7 is also 3 so just multiply 5 by 3 and its 15

I don’t know the answer to this but what is f(x)=-0.5x+27? Can someone help me out please?

Answers

f(X)=-0.5x+27 is a linear function that has -0.5 as the slope nad 27 as the y intercept

Answer: f(x) = 26.5

-_-

Emma bought a hat for $20. Emma increases the price by 25%. What is the price of the hat now?

Answers

Answer:

its $25

Step-by-step explanation:

Answer:

The hat is 25$ now

Step-by-step explanation:

25% of 20 is 5

5 + 20 = 25

Which of these sets of ordered pairs would define a line with a positive slope?
a. (5, 1) and (0, 5)
b. (2, 3) and (-4, 8)
c. (3, 6) and (5, 1)
d. (2, 3) and (7, 6)

Answers

The correct answer is D

what is the height of the tree?​

Answers

Answer:

I would say 36 sorry i im wrong.

Step-by-step explanation:

Can someone help me and do a step by step answer? I’d appreciate it a lot and I’ll give you brainlist

Answers

Answer:

y =  1/2x + 4 1/2

Step-by-step explanation:

(9 , 9) (3 , 6)

slope (m) = Rise (Δy) /run (Δx) = (9-6) / (9-3) = 3/6 = 1/2

(y-6)/(x-3) = 1/2

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The surface area of the prism is ______ square units. All measurements in the image below are in units. (Input whole number only.)


Please Help!!!! Giving brainliest!!!

Answers

54 square units!!!!!!!!

Answer:

54

Step-by-step explanation:

Both Triangles: 12

Square: 10.5

Back rectangle: 14

Front Rectangle: 17.5

And just add all of them together

Lucas makes 400 dollars every 2 weeks from his part time job. He saves 200 from the 400. After saving 200 every two weeks, how long until he has 2,000?

Answers

Answer:

It would be 20 weeks because 2,000 divided by 200 is 10 and every 2 weeks he saves 200 and 2×10=20

Step-by-step explanation:

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