WORTH 50 POINTS
Recall the formula for factoring the difference of
two squares
a^2-b^2= (a + b)(a - b)
Use the formula to factor n^8-9
What is the value of a?

will mark brainliest pls answer fast

Answer:

1.175 Canadian dollars

Step-by-step explanation:

129.6/5.50 = 27.70/x

because the exchange ratio is the same for the two currencies, use the above equation to find the answer. Therefore, use the cross multiply system which gets you

152.23 = 129.6x

x = 1.175

Answer:

angle 1 =135

Step-by-step explanation:

it is 180 degrees total. We know that there are two angles that have a ratio to 3:1. So, assign x to 2. Since 1 = 3x, we do 3x+x =180

4x=180

x=45 or angle 2

180-45=135 or angle 1

Multiply angle 2 by 3 to check if its correct

Answer:

the measurement of angle 1 is 135 degrees. (i think)

Step-by-step explanation:

so we know that angle 1 and 2 are at a 3:1 ratio

and that 1 and 2 add to 180 degrees

if you plug the number 45 in to angle 1, then multiply that by 3 you get 135

the remaining number to add to 180 would be angle 2

which is 45 degrees.

If the explanation is choppy or hard to read, apologies, its fairly hard for me to explain this.

however i hope this helps.

Answer: 4 Cups

I think in order to solve this, you would need to add up the fractions that they used. So it would be,

[tex]\frac{1}{4}+\frac{1}{4}+\frac{3}{8}+\frac{3}{8}+\frac{5}{8}+\frac{5}{8}+\frac{5}{8}+\frac{7}{8}[/tex]   Transform the Expressions

[tex]\frac{1+1}{4} +\frac{3+3+5+5+5+7}{8}[/tex]    Calculate the sum

[tex]\frac{2}{4} +\frac{28}{8}[/tex]    Reduce

[tex]\frac{1}{2}+\frac{7}{2}[/tex]   Transform the Expression

[tex]\frac{1+7}{2}[/tex]   Calculate

[tex]\frac{8}{2}[/tex]  Reduce the Fraction

[tex]4[/tex]

Please mark brainliest if this helped you :)

Answer:

-6, 6

Explanation:

-6 - 6 = -12

Answer:

-5 degrees

Step-by-step explanation:

-10+5= -5

Answer:

-5 degrees

Step-by-step explanation:

Current temperature = initial temperature + increased temperature

Current temperature = [tex]-10+5[/tex]

Current temperature = [tex]-5[/tex]

Answer:

Yes, you were correct with x=5. AB=CD=25 and AC=BD=23

Step-by-step explanation:

You already have x=5.

The first question is AB=CD=__ so you can just look at AB and you see it says 5x. You just substitute in the 5 for the x because you already got that. 5 times 5 = 25 and there is your first answer.

AC=BD=__ is your next question and you just look at AC and see "5x-2" and substitute in the x again. So you'll have 5(5)-2 which is 25-2 and your answer will be 23.

Yes, it is correct with x=5.It comes AB=CD = 25 and AC = BD=23.

Given that,

Based on the above information, the calculation is as follows:

AB = CD

Here AB = 5x

= 5(5)

= 25

So AB = CD = 25

Now

AC = BD

Here

AC = 5x - 2

= 5(5) - 2

= 25 - 2

=23

So AC = BD = 23

Therefore we can conclude that Yes, it is correct with x=5.It comes AB=CD = 25 and AC = BD=23.

Learn more: brainly.com/question/13549064

Answer:

with ur head dummy <3....

Answer:

x = 13

y = 12

Step-by-step explanation:

4x and 52 have to be equal because they are opposites on the same line. So because of this we can make a simple equation to find x.

4x = 52

divide both sides by 4 and you have x

x = 13

to find y on the other equation, since we know two of the angles, we can add up all three angles and make them equal to 180 (the sum of all angles on a triangle)

90 + 52 + (3y +2) = 180

first subtract 90 and 52 from both sides to leave the equation alone

3y + 2 = 38

second substract 2 to isolate the variable

3y = 36

lastly divide both sides by three

y = 12

5 is the y intercept.

-Always the number without the variable.

9514 1404 393

Answer:

Step-by-step explanation:

The number of pennies will be 2 more than a multiple of 10. 2 pennies and 9 dimes is not enough coins. 12 pennies and 8 dimes is exactly enough.

__

This one is easy to figure by "trial and error," as there is only one trial that makes any sense.

If you want to figure it using an equation, it usually works well to let a variable represent the quantity of the higher-value coin. If d is the number of dimes, then 20-d is the number of pennies. The total number of cents is ...

  10d +(20-d) = 92

  9d = 72 . . . . . . . . . subtract 20

  d = 8

  20-d = 12

There are 8 dimes and 12 pennies.

Answer:

42

Step-by-step explanation:

Answer:

[tex] x = \frac{7 \sqrt{2} }{2} [/tex]

Step-by-step explanation:

[tex] \cos \: 45 \degree = \frac{x}{7} \\ \\ \frac{1}{ \sqrt{2} } = \frac{x}{7} \\ \\ x = \frac{7}{ \sqrt{2} } \\ \\ x = \frac{7 \sqrt{2} }{2} [/tex]

I think so its A [infinity]Qn=1(−1)n

Answer:

She is not correct, the claim is wrong

Step-by-step explanation:

Here, we want to check if a claim

made is correct

We can represent the exponential function as;

y = I( 1 - r)^t

So in this case;

1 - r = 0.72

r = 1 - 0.72

r = 0.28

This is same as 28%

So what this mean is that we expect a decrease of 28% per day

There are 24 hours on a day

So the decrease per hour will be 28%/24 = 1.167%

So as we can see the claim is wrong

The model of the level of water in a draining pool is an illustration of an exponential function.

Inayah's claim is incorrect, because the water drains at 28% per hour

The function is given as:

[tex]\mathbf{y = 12(.72)^t}[/tex]

An exponential function is represented as:

[tex]\mathbf{y = a(1 - r)^t}[/tex]

Where r represents the rate.

So, by comparison

[tex]\mathbf{1 - r = 0.72}[/tex]

Collect like terms

[tex]\mathbf{- r = 0.72 - 1}[/tex]

[tex]\mathbf{- r = -0.28}[/tex]

Multiply both sides by -1

[tex]\mathbf{r = 0.28}[/tex]

Express as percentage

[tex]\mathbf{r = 28\%}[/tex]

This means that, the water drains at 28% per hour

Hence, Inayah's claim is incorrect

Read more about exponential functions at:

https://brainly.com/question/15352175

Answer:

−2x+7

explanation:

Subtract 5x from 3x

Answer:

-2x+7

Step-by-step explanation:

Combine Like Terms:

=3x+7+−5x=(3x+−5x)+(7) =−2x+7

Answer:

=−2x+7

Hope I helped-

Sleepy~

Answer:

100

Step-by-step explanation:

multiplication, 20*5.

Answer:

i would go with 100

Step-by-step explanation:

20 times 5

Answer:

C.

Step-by-step explanation:

The easiest way to tell if a relation is a function is to look at the values of the x's. If more than one x is the same, it cannot be a function. In contrast, if more than one y is the same, it is okay. The answers A, B, and D are functions because the x's are all different. Looking at the table for the answer C, you can see that two x's are the same (there are two x's with the value of 1).

Hope this helps!! Have a wonderful day :D

Answer:

3.69

Step-by-step explanation:

2.4-9.1 = -6.7

-6.7+12.5x = 39.44

12.5x = 39.44 + 6.7

12.5x = 46.14

x = 46.14 / 12.5 = 3.69

Answer:

The net tax refund of Harry and Helen is $555.

Step-by-step explanation:

The net tax refund of Harry and Helen is $555.

The marginal tax rate is the tax rate imposed on the additional dollar. In general, as a taxpayer's income rises, so does his or her marginal tax rate. It is also known as progressive taxation since the taxpayer with the highest income pays the highest level of income tax.

As, To calculate their due tax liability, the total withheld amount for the year will be subtracted from the overall tax liability.

So, Due Tax Liability

= Total tax Liability - Total withheld Amount

= 9169 - (187 x 52)

= $55.

Learn more about Marginal Tax rate here:

https://brainly.com/question/2433386

#SPJ7

Answer:

The value of x is 3

Step-by-step explanation:

The stage is rectangular in shape.

The formula for area of a rectangle is:

Length × Width

Length = 24 feet

Width = 4x + 4 feet

Hence:

384 = (4x + 4) × (24)

384 = 96x + 96

Collect like terms

384 - 96 = 96x

288 = 96x

x = 288/96

x = 3

The value of x is 3

Answer:

Subtract 10 from both sides of the equation. The equation in standard form is:

y = [tex]7m^{2}[/tex] + 3m + 1

Step-by-step explanation:

To convert [tex]7m^{2}[/tex] + 3m + 11 = 10 into standard form ( y = ax^2 + bx + c), subtract 10 from both sides of the equation to make the equation equal to zero:

[tex]7m^{2}[/tex] + 3m + 11 = 10

[tex]7m^{2}[/tex] + 3m + 11 - 10 = 10 - 10

[tex]7m^{2}[/tex] + 3m + 1 = 0

Replace the 0 with y and you have your answer :)

Answer:

110 cookies in 180 minutes

Step-by-step explanation:

Answer:

Work shown below!

Step-by-step explanation:

(x + 4)(x - 3) = [tex]x^{2} -3x+4x-12=x^{2} +x-12[/tex]

Answer:

3

Step-by-step explanation:

2×-6=4×-12

-2. -2

-6=2×-12

+12. +12

6=2×

/2 /2

×=3

Answer:

$2.69

Step-by-step explanation:

here is with distribution...

1. add all the original prices together

2.50+4.95+6.00=13.45

2. multiply that sum(13.45) by 0.2(0.2 IS THE 20% OFF)

13.45x0.2=2.69

FINAL ANSWER: $2.69

(2) The sum of angles in a quad is always 360.

Take line RST and you get the value of angle RSP as 180 - 110 which is 70. This is due to them being linear pairs. Angles formed by a straight line is always 180 degrees!

110 + x = 180

x = 70

Now for y

Since we found values for all the 3 angles, which are 140, 110, 70, the 4th one is gonna be the sum of all the 3 angles subtracted from 360

140 + 110 + 70 + y = 360

y = 360 - (140 + 70 + 110)

y = 50 <- That's the answer.

(2) 2 of the angles are already given. If you look, angle U is 90 degrees. That's what the sign represents.

Angle Q (In the quad) is going to be 180 - 110 (Linear pairs) = 70

Since we found 3 angles the 4th one (angle R) is going to be 360 - (90 + 50 + 70) which is 360 - 210 which is 150.

Since angle R in the quad is 150, due to linear pair property, 3x = 180 - 150

3x = 30

x = 30/3 = 10

x = 10 <- That's the answer :D

Answer:

b

Step-by-step explanation:

I lookdit up on google

Answer:

iphone 12 is trash

Step-by-step explanation:

Answer:

[tex]6y {}^{2} + 24y[/tex]

Step-by-step explanation:

For this- you use the rule of distribution

1. 3 x 2 = 6

y x y = y^2

6y^2

2. 3y x 8 = 24y

6y^2 + 24y

Answer:

undefined i think

Step-by-step explanation: