Mathematics High School

The expression(5a-4b)(5a+4a) *

A) 10a² - 8b²

B) 10a - 8b

C) 25a - 16b

D) 2 5a²-16b²

Answers

Answer 1

Answer:

I think question should change like this.

(5a-4b)(5a+4b)

(5a)(5a+4b) + (-4b)(5a+4b)

25a² + 20ab - 20ab -16b²

25a²- 16 b²

Step-by-step explanation:

Related Questions

Please please help me I don’t know this at all I will give Brainlyest

Answers

Answer:

the answer is the 2nd option

Step-by-step explanation:

n=5/6

Answer:

n = 5/6

Step-by-step explanation:

Hey There!

our goal is to get the variable on one side (n) and the constant on the other

To do this we divide each side by 4/5

2/3 divided by 4/5 = 5/6

Therefore n = 5/6

Hope this helps :) and if you have any more questions just let me know

Janice NEEDS 3 GALLONS of lemonade for a party. She has 4 quarts, 6 pints and 4 cups of lemonade already made. How many CUPS of lemonade does Janice have? Be sure to re-state the question when giving your answer.

Answers

Answer:

32 cups

Step-by-step explanation:

To find the total number of cups, we have to convert the measures that are not in cups to cups and add

1 quart  = 4 cups

4 quarts = 4 x4 = 16 cups

1 pint = 2 cups

6 pints = 2 x 6 = 12 pints

total number of cups = 16 + 12 + 4 = 32 cups

Give the product in simplest form:

Answers

Answer:

hi

Step-by-step explanation:

4 7/8 .4 3/4= 7/2 . 3 =21/2

Answer:

23 5/32

Step-by-step explanation:

Convert both 4 7/8 and 4 3/4 into improper fractions:

the first becomes 39/8, and the second becomes 19/4.  We then have:

39      19              

------ * -----   which comes out to 23.15625, or 23 5/32

  8       4                                      

Can someone help me on this algebra question

Answers

Answer:

It is the last one

Step-by-step explanation:

Anybody know ? I need help

Answers

Answer:

b

Step-by-step explanation:

Answer:

i believe it is b)alternate exterior

Step-by-step explanation:

have a nice day

btw it will help a lot if you can mark me brainliest

10+2345665434567876543234567876543234567+23456654323456787654323456765433456 Please i need help wink

Answers

Answer:

2369122088891333330888891333308668023

Step-by-step explanation:

It is the simple addition :

2345665434567876543234567876543234567

+  23456654323456787654323456765433456

                                                                 +  10

is equals to

2369122088891333330888891333308668023

evaluate the expression when x=8, y=3, and z=11 5x - 9y =2z

Answers

Answer:

5x-9y=2z

Step-by-step explanation:

5x8=40

9x3=27

2x11=22

so 40-27=22

Zoey is collecting Pokémon cards. She already has 50 cards and she buys 10 every week. How many weeks will it take her to collect 500?

Answers

10 weeks is the correct answer

Answer:

10 weeks

Step-by-step explanation:

What is the angle of elevation of the sun when a 49-ft mast casts a 22 ft shadow?

Answers

Answer:

[tex]\theta=65.82^{\circ}[/tex]

Step-by-step explanation:

Given that,

Perpendicular = 49 ft

Base = 22 ft

We need to find the angle of elevation of the sun. It can be calculated using trigonometry as follows :

[tex]\tan\theta=\dfrac{P}{B}\\\\\tan\theta=\dfrac{49}{22}\\\\\theta=65.82^{\circ}[/tex]

So, the required angle of elevation is [tex]65.82^{\circ}[/tex].

HELP PLEASE!!!! math questions:
1. Fill in the blanks to describe how you could identify the number of solutions to a system if you only
knew some points on each line.
Start by finding the _______________ of each line using the points.
Compare the slopes. If they are different, the lines _______________. This means there is
_______________ solution to the system.
You could also plot the points on a _______________ and use this to find the point where the
lines_______________.

2. . Identify the number of solutions from the description of the equations.
Two equations are the same on one side but different on the other. ANSWER:
One of the equations in the system can be rewritten so it is identical to the other equation.ANSWER:

3.Adding the equations in a system of equations can sometimes be helpful in solving a system of
equations. Explain why.

Answers

Answer:

1)Rate of change, intersect, one, graph, intersect  (i'm not really sure but this is what i think the answers are for 1)

Step-by-step explanation:

The answer is in you brain sorry ;$

Sandy has 4 horses, 2 cats, and 6 chickens. What percentage of Sandy's pets have two legs.

Answers

Answer:

50%

Step-by-step explanation:

only chickens have two legs, both horses and cats have 4 legs. So when you add all of the pets together you get 12. There are 6 chickens and 6/12 is 50%

8/12 or about 66.6% of Sandy’s animals have two legs

34.98 x 104 = _______

because the number 104 has ______
zeros when it is written without an exponent.

Answers

Answer:

3637.92

Step-by-step explanation:

Answer:

THE RIGHT ANSWER IS 349,800 because the number has 10'4 has 4

Step-by-step explanation

PLEASE HELP ASAP, DUE IN AN HR!!!

A cube has edges of 1/4 inch. What is the surface area of the cube? Use the formula Surface Area = 6s^2.

Answers

Answer:

[tex]\dfrac38 \text{ sq in}[/tex]

Step-by-step explanation:

plug 1/4 into the formula for surface area and simplify to get 6/16, or 3/8.

AWARDING BRAINLIEST
PLS HELP ME (please don’t just put something random.)

Answers

Answer:

the answer is 312 cm

I took the quiz

A circle has a radius of 4ft. What is the area of the sector formed by a central angle
measuring 3TT/2 radius?
Use 3.14 for pi.
o 37.68 ft?
o 18.84 ft2
o 50.24 ft
O 75.36 ft2

Answers

Answer:

The correct answer is: 37.68ft^2

Step-by-step explanation:

Which of the following is equal to 56 fl oz?
A. 6 cups
B. 7 cups
C. 8 cups
D. 7 quarts

Answers

Answer:

B. 7 Cups

Step-by-step explanation:

1 cup = 8 fl oz

7x8=56

Today's mathematicians would probably agree that the Riemann Hypothesis is the most significant open problem in all of math. It's one of the seven Millennium Prize Problems, with a million dollar reward for its solution

Answers

Answer:

Yes. I think you are right.

Step-by-step explanation:

Yes, its about proving  that all prime numbers are on a certain line in a four dimensional landscape. It's eluded Mathematicians for many  decades now.

An interesting book about this is 'The Music of the Primes'.

x2 - 4x - 3=0, solve the quadratic equation

Answers

Answer:

-3/2

Step-by-step explanation:

Answer:

x=3,1

................

4 x a =
c x d =
3c x -2 =
-5t x 3a =
4c x 2e =

Answers

Answer:

[tex]4 \times a = 4a \\ c \times d = cd \\ 3c \times - 2 = - 6c \\ - 5t \times 3a = - 15at \\ 4c \times 2e = 8ce[/tex]

HELP PLEASE I NEED THIS RN ITS DUE

The circumference of the hub cap of a tire is 80.89 centimeters. Find the area of this hub cap. Use 3.14 for pi. Use pencil and paper. If the circumference of the hub cap were​ smaller, explain how this would change the area of the hub cap.

Answers

Answer:

answer

Step answer by answer step explanation step answer answer by by expla

find the area of the circle 26 in. rounded to the nearest tenth

Answers

Answer:

πr²

22/7*13²

22/7*169

3718/7

531.145

to the nearest tenth

531.15inches

Kerry said that the Japanese Bullet Train takes about 6 minutes
to travel 22.2 km. Jerry said that at this rate, he could travel
around the world at the equator in less than 8 days. Kerry
disagrees - she thinks it will take longer. Who is correct?
Justify your response.
*The diameter of Earth is approximately 12 756 km.


Solution for grade 8

Answers

Answer: 36 minutes

Can you help me with my questions to thanks

What is the volume of the rectangular prism?

A) 2.1 in3
B) 5.25 in3
C) 21 in3
D) 42 in3

Answers

Answer:

B, 5.25 inches cubed

Step-by-step explanation:

1.5 x 3.5 x 1 = 5.25

Answer:

B

Step-by-step explanation:

the answer is B 5.25 in3 because volume =l×w×h

3.5×1×1.5=5.25

The diagram shows a 140° sector in a circle of radius 8 units.

What is the approximate area of the shaded sector?
A) 25 square units
B) 67 square units
C) 78 square units
D) 156 square units

Answers

Answer: 78 square units

Step-by-step explanation:

3 square root 4 • square root 3

Answers

Answer:

6 square root 3

Step-by-step explanation:

3 square root 4 .square root 3= 6 square root 3

What type of number is 5/8?

Answers

Answer:

5/8 is a fraction

This is a fraction but 5/8 as a decimal is 0.635 if that is what you are looking for ?

2(3x+7) 5(2x+1) x(3x+2

Answers

Answer:

60x ^3 + 170 x ^2 + 70x

Step-by-step explanation:

Who watching temptation island tonight?

Answers

Answer:

yes

Step-by-step explanation:

yes and uh yeah totally yeaaahhhh <3

What is the distance between (7. -9) and
(-2, -1)? Round to the nearest tenth.
A. 12.0
B. 11.2
C. 13.5
D. 9.4.

Answers

Use the distance formula (see image below)
Sqrt (-2-7)^2+(-1+9)^2
= Sqrt 81+64
= sqrt 145

12 * 12 = 144
The closest answer is 12 (option B)

(See second photo to see work)

what is 78 ÷ 5 and the remainder

Answers

Answer:

The answer is: (15) and the remainder is (6)

~i really hope this helps, have a gr8 day my friend!~

Step-by-step explanation:

Answer:

Step 1) Start by dividing 78 by 5 to get the decimal answer as illustrated below. Note that we round the answer if necessary, but don't worry, the final answer will still be exact.

78 / 5 = 15.60

Step 2) Next we take the Whole part of the answer in Step 1 and multiply it by the Divisor. As you can see, it does not matter if we rounded in the previous step because the Decimal part is ignored. Furthermore, the Divisor in 78 divided by 5 is 5. Thus, the Whole multiplied by the Divisor is:

15 x 5 = 75

Step 3) Finally, we will subtract the answer in Step 2 from the Dividend to get the answer. The Dividend in 78 divided by 5 is 78. Thus, our final calculation to get the answer is:

78 - 75 = 3

That is all there is to it! Again, the answer is 3.

So here

78 ÷ 5 is 15.6 and it's remainder is 3

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