Mathematics High School

Which of the following is equal to 49x2−81?


(7x−9)2

(x+9)(x−9)

(7x+9)(7x−9)

(7x+9)2

Answers

Answer 1

Answer:

2

Step-by-step explanation:

Related Questions

What geometric figure would you get if you joined the endpoints of two rays and pointed the rats in opposite directions?

Pls help me ASAP, this is due today. I would really appreciate it.

Answers

A line? They’ll look like this right? <—••—> ?

Notebook costs $5,write an expression to show how much (n) notebook costs.

Answers

To find the total cost you would multiply the cost of a notebook by the number of notebooks purchased:

Total = 5n

SOMEONEEEE HELLPPPPPPP PLEASE?!??!

Answers

Answer:

(1,4)

Step-by-step explanation:

the Answer is: (x,y)=(1,4)

Are these similar and what is the reason?

Answers

Answer:

yes

Step-by-step explanation:

Answer:

Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion . In other words, similar triangles are the same shape, but not necessarily the same size.

The triangles are congruent if, in addition to this, their corresponding sides are of equal length.

Step-by-step explanation:

so I will that they are similar

answer the picture first then answer my second question lot of points
The angle measures in a triangle are 25°, 135°, and 20°. What type of triangle is it?

A. isosceles triangle
B. obtuse triangle
C. right triangle
D. acute triangle

Answers

First is ec. Second is b

Answer:

ec and  obtuse triangle

Circle O has a circumference of approximately 250π ft. Circle O with diameter d is shown. What is the approximate length of the diameter, d? 40 ft

Answers

Answer:

250 ft

Step-by-step explanation:

circumference of a circle = πD

D = diameter

to find diameter divide by pi

d = 250

PLEASEPLEASE ANSWER

and if i get any more bots answering with links im gonna cry ive put this question 5 times

Answers

Answer:

x = 7

Step-by-step explanation:

A triangle's total interior angle measurement will equal 180°.

Set all measurements equal to 180:

(82) + (9x - 6) + (6x - 1) = 180

Simplify. Combine like terms:

(82 - 6 - 1) + (9x + 6x) = 180

(82 - 7) + (15x) = 180

(75) + 15x = 180

Next, isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation, and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

~

First, Subtract 75 from both sides of the equation:

15x + 75 = 180

15x + 75 (-75) = 180 (-75)

15x = 180 - 75

15x = 105

Next, divide 15 from both sides of the equation:

(15x)/15 = (105)/15

x = 105/15

x = 7

7 is your value for x.

~

It doesn’t have the plus sign

Answers

+

there u go if that helps u can copy and paste it

Answer: +

Step-by-step explanation:

Please help will mark brainliest

Answers

4, 16
-1, 1
3, 9
12, 144
16, 256

The rule is y=x^2. If you square all the numbers on the x side, you will get the numbers on the y side. 4 times 4 = 16. -1 times -1 =1. 3 times 3 =9, and so on.

Please someone help me... I have my state test tomorrow and I don't know how to do this.

Answers

Answer: 3.8

Step-by-step explanation:

First, solve 9.30 x 10^7 to find the length of an astronomical unit.

10^7 = 10000000

9.30x10000000=93000000 miles

next, solve for the distances the sun is from Jupiter and Mars,

10^8 = 100000000

1.42x100000000=142000000 miles

4.84x100000000=484000000 miles

next, subtract the distances

484000000-142000000=342000000 miles

then, divide the sum by 93000000 to find the amount in astronomical units.

342000000/93000000=3.677419

finally, round to the nearest hundred

3.68

7. Adrienne and her brother John each inherit $7,000 that they use to open savings accounts with
Adrienne's account earns 4.7% annual compound interest and John's account earns 4.7% annual
simple interest. Neither makes any additional deposits or withdrawals for 10 years.
a. Who's account will be worth more at the end of 10 years?
b. How much more will the account be worth?

Answers

Answer:

234

Step-by-step explanation:

s=23

Mhanifa can you please help? Look at the picture attached. I will mark brainliest!

Answers

Answer:

(2,1)

Step-by-step explanation:

Answer:

Diagonals of a parallelogram bisect each other

Given vertices:

(-2,-1), (1,3), (6,3), (3,-1)

Plot the points.

We see the diagonals are:

(-2,-1) (6,3)  and (1,3), (3,-1)

The midpoint of any diagonal is the intersection of the diagonals.

Use midpoint formula to find the coordinates:

x = (x₁ + x₂)/2 = (-2 + 6)/2 = 4/2 = 2y = (y₁ + y₂)/2 = (-1 + 3)/2 = 2/2 = 1

The point is (2, 1)

Kosey needs to get 80% of his
questions correct on his math test
to get a B for the quarter. If his
test has 60 questions, how many
questions will he need to get right?

Answers

Answer:

48 questions

Step-by-step explanation:

There are 60 questions on the test

to see how many questions he needs to solve to get 80% we multiply 60 with 80 and divide it by 100

60 x 80 ÷ 100 = 48

Stu invested $700 in a Cd. if the CD grows at a rate of %6 per year compounded annually, when will he double his money ?

Answers

Answer:16.66 repeating years

Step-by-step explanation: take 6% of 700 the divide 700 by that number to get how many years until he doubles his money then check by multpling 42 * 16.66 repeating

Find the mean, median, and mode for the following data set.

3, 8, 10, 14, 14, 17

Answers

Answer:

Mean = 11

Median = 12

Mode = 14

Step-by-step explanation:

I hope this helped!

Which of the following is a trinomial with a constant term ?

Answers

It’s A because a trinomios has three terms and the last digit 12 doesn’t change unlike 2y which changes with every input of y.

Answer:

A

Step-by-step explanation:

just took the test

I need help subtracting integers!! THIS IS TIME SENSITIVE!!

Answers

remember that two negatives equal a positive
3 + (-8) = -5
-9 - (-4) = -5
7 - (-5) = 12
6 - (-4) = 10
and so on

Rewrite the following without an exponent. (9/5^-2)​

Answers

Answer:

225

Step-by-step explanation:

5^-2 can be rewritten as 1/25.

Then we can divide 1/25 by 9. 9/(1/25)= 225

Matt made a trip to his friend's house and back. On
the trip there he drove 24 miles per hour and on the
return trip he went 30 miles per hour. How long did
the trip there take if the return trip took 4 hours

Answers

————>
24 mph (? hour trip there)
<————
30 mph (4 hour return trip)

If the return trip took 4 hours, then that means the total miles away would be 120. Matt was driving at 30 mph and drove for four hours, After multiplying 30 by 4, you will get 120. Once you’ve done that, you can do 120 divided by 24. Now that you know how many miles away his friend’s house is, you can estimate the time it took him to arrive by driving at 24 mph. 120 / 24 = 5

Answer: 5 hours

Which has the greater value, -4 or -5?

please step by step

Answers

Answer:

-5 is the greater value

Step-by-step explanation: because they are both negative but if the other one is positive and the other one is negative, the positive is the greater value.

Joey and her sister are helping remodel their parent's house.

They plan to carpet the bedroom which is 14 feet by 16 feet.

The carpet is priced at $1.90 per square foot.

How much can they expect to pay for the new carpet?

Answers

Answer:

They will have to pay $425.60

Step-by-step explanation:

14*16 equals 224 feet

224 feet times $1.90 equals $425.60

Please help! Will give good rating

Answers

Answer:

88 ft²

Step-by-step explanation:

Find the area of the shaded region:

8x16= 128

Find the area of the un-shaded region:

5x4=20

20x2 regions= 40 ft² total

since the unshaded region is excluded from the shaded region subtract the area of the shaded region by the area of the unshaded region

128-40= 88

A= 88 ft²

Max has $156. He spends 2/3 of his money on groceries. How much money did he have remaining? Explain.

Answers

Answer:

$52

Step-by-step explanation:

first 2/3*156 and you get 104

Then you do 156 -104 and you will have your answer

Answer:

Max has $52 remaining

Step-by-step explanation:

[tex]\frac{2}{3}*\frac{156}{1} = \frac{312}{3} \\[/tex]

simplify [tex]\frac{312}{3}[/tex] by 3 to get [tex]\frac{104}{1}[/tex]

y = -3/2x -2 y = -1/4 + 3

Answers

Answer:

umm. what am I supposed to find

Step-by-step explanation:

I need to know what to fi d in order to get the answer for you it would make it easier if you did that now so yeah

Solve the following quadratic equation for all values of x in simplest form.
5x(x^2-4)+10=10
first person to answer right get branliest
people in com.ments who right get a tha.nks and fo.llow

Answers

Answer:

[tex]x=0,\:x=-2,\:x=2[/tex]

Step-by-step explanation:

Do you want me to explain it?

what is the diameter of the circle below? use 2.14 for pi

Answers

Answer:

4.8

Step-by-step explanation:

d = 4.8

The diameter is the WHOLE line for the circle and it's given

Mrs. Morales wrote a test with 15 questions covering spelling and Y vocabulary. Spelling questions (x) are worth 5 points and vocabulary questions (y) are worth 10 points. The maximum number of points possible on the test is 100. ​

Answers

15=5x+10y should be the answer or 100 to replace the 15 also it can be rearranged in a different way

How do u make 987 mm to *what* cm?

Answers

Answer:

The answer is 98.7

Step-by-step explanation:

Easy! from the millimeter value divide it by 10 for example I have 142mm then the amount of centimeters I have is 14.2

finding area of circle with radius , giving brainliest :)) pls help asap

Answers

Answer:

number 2 is the answer or 4*pi inches² or 12.6

Step-by-step explanation:

Can someone explain this lol thanks Find the volume of the rectangular
prism.
4
3
9
[?] units

Answers

I’ll tell you the answer but first you gotta pay up with that brainliest answer then I’ll start talking (¬‿¬)
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