Evaluate (18)^2-(15)^2.
Please show working

Answers

Answer 1
18^2-15^2
=324-225
99
Answer 2

• Answer:

99

• Step-by-step explanation:

Hi there !

use formula a² - b² = (a-b)(a+b)

18² - 15² =

= (18 - 15)(18 + 15)

= 3×33

= 99

Good luck !


Related Questions

The sum of 3 consecutive odd integers is 36. Whal
consecutive odd integers

Answers

[tex]\huge\pink{Answer}[/tex]

Any odd number can be represented with 2n+1 where n is a whole number. Also, since the next consecutive number will be even (2n+1+1), then the next consecutive odd number must be 2n+1+2, or 2n+3. Since consecutive odd numbers are separated by 2, then the previous odd number should be 2n-1. So:

2n-1+2n+1+2n+3=366n+3=366n+3-3=36-36n/3=33/32n=11

Now in order to find three odd consecutive numbers that will sum to 36, you must be able to divide 11 evenly by 2, and have a whole number as a result. This is impossible, so there aren't any 3 odd numbers that will sum to 36.

HOPE IT HELPS ☺️

Which of these correctly defines a ray?
a part of a line with exactly two end points
a straight path that extends endlessly in both directions
a circular path such that every point on the path is equidistant from its center
a part of a line that begins at a particular point and extends endlessly in one direction

Answers

Answer:

the last option

Step-by-step explanation:

it is a ray

A ray is part of a line that begins at a particular point and extends endlessly in one direction

A ray can be defined as a straight line passing through a point. A ray is denoted by;

A pointed head with an arrowa line extend endlessly in a directiona line that begins from a particular point

Hence we can conclude that a ray is part of a line that begins at a particular point and extends endlessly in one direction

Learn more here: https://brainly.com/question/11916463

What is the value of the expression -17 x 1.3? Be sure to use the correct place value.

Answers

DA DA DA DA DA DA DA DA DA DA

Join the cult ;)

Answer:

-22.1

Step-by-step explanation:

-17 x 1.3 = -22.1  

Hope I helped!

Divide. Write your answer as a fraction in simplest form.

−10 2/7 ÷ (−4 4/11)=

Answers

Answer:

Answer is 2 5/14. Hope that helped

Answer:

33/14 or 2 5/14

Step-by-step explanation:

can someone help..convert 15/125 to a decimal in long division?

Answers

Answer:

the answer is 0.12

Step-by-step explanation:

You would do 15/125 which is 3/25

then you would do 25 times 4 and the 3 times for to get 12/100

then you would convert that into a decimal which is 0.12

Here are the steps to your problem

I need help ASAP
Which statement best describes points P and Q?

Answers

Answer:

their y coordinates are the same

Step-by-step explanation:

Answer:

Their y-coordinates are the same.

Step-by-step explanation:

Point P is at (-6, 4) and Point Q is at (1, 4).

Notice how their y-values, which is 4, are the same.

The perimeters of the square and the regular pentagon are equal. A square with side lengths of 3x + 3. A pentagon with side lengths of x + 8. What is the perimeter of each polygon?

Answers

Answer:

The answer is Not 40 idk what it is

Step-by-step explanation:

Someone invested some money at 8% and $300 more than
twice this amount at 12%. Her total annual income from
the two investments is $548. How much is invested at
each rate?
32

Answers

Answer:

$1600 at 8% and 3500 at 12%

Step-by-step explanation:

The rule of the interest is I = PRT, where

P is the amount of investment R is the rate in decimalT is the time

Assume that the amount of money is $x

P = x

∵ The rate is 8%

R = 8/100 = 0.08

∵ She has an annual income

T = 1

→ Substitute them in the rule to find the interest amount

∴ I = x × 0.08 × 1

I = 0.08x

∵ She invested $300 more than twice the previous amount

P = 2x + 300

∵ The rate is 12%

R = 12/100 = 0.12

T = 1

→ Substitute them in the rule to find the other interest amount

∴ I = (2x + 300) × 0.12 × 1

I = 0.24x + 36

∵ Her total annual income from both investments is $548

→ Add the two amount of interest and equate their sum by 548

0.08x + 0.24x + 36 = 548

→ Add the like terms in the left side

∴ 0.32x + 36 = 548

→ Subtract 36 from both sides

∴ 0.32x + 36 - 36 = 548 - 36

∴ 0.32x = 512

→ Divide both sides by 0.32

x = 1600

She invested $1600 at 8%

→ Substitute x by 1600 in the expression of the other amount to find it

∵ 2x + 300 = 2(1600) + 300 = 3500

She invested $3500 at 12%

Explain! Prizes! Thank you !

Answers

Answer:

$16

Step-by-step explanation:

20/5 = 4

4 x 4 = 16

Have a good day!

Answer:  Choice A) $16

==================================================

Work Shown:

5 notebooks = 20 dollars

5/5 notebooks = 20/5 dollars ..... divide both sides by 5

1 notebook = 4 dollars ..... unit rate

4*(1 notebook) = 4*(4 dollars) .... multiply both sides by 4

4 notebooks = 16 dollars

---------------

Another approach:

(5 notebooks)/(20 dollars) = (4 notebooks)/(x dollars)

5/20 = 4/x

5*x = 20*4 ... cross multiply

5x = 80

5x/5 = 80/5 .... dividing both sides by 5

x = 16

So 4 notebooks cost $16

Dory can run 3.25 miles every hour. How long will it take her to run a race that is 16 1/4 miles long?


pls help​

Answers

it would rake her 5 hours

3x2(2+4)X22 PLEASE HELP

Answers

Answer: 18x24 or 792

Step-by-step explanation:

Someone please help!!! Look at the attachment

Answers

Answer:

1. [tex]\angle 5[/tex] and [tex]\angle 13[/tex] are Corresponding Angles

2. [tex]\angle 4[/tex] and [tex]\angle 9[/tex] are Alternate Interior Angles

3. [tex]\angle 5[/tex] and [tex]\angle 16[/tex] are Alternate Exterior Angles

4. [tex]\angle 3[/tex] and [tex]\angle 9[/tex] are Consecutive Interior Angles

Step-by-step explanation:

Alternate Interior Angles - When a pair of angles are in the interior in the opposite sides of the transversal.

Alternate Exterior Angles -When a pair of angles are in the outside in opposite sides of the transversal.

Corresponding Angles - When a pair of angles are in the same side of one of two sides by a cross-section.

Consecutive Interior Angles - When a pair of angles on the side are same but inside the two lines.

-5a + 15/2a - 25 = 53.2 + 21.8​

Answers

Answer:

a= 40

Step-by-step explanation:

-5a + 7.5a - 25 = 53.2 + 21.8​

add like terms on both sides: 2.5a - 25 = 75

add 25 on both sides: 2.5a = 100

divide both sides by 2.5: a = 40

Answer:

a = 40

Step-by-step explanation:

-5a + 15/2a - 25 = 53.2 + 21.8​: Add 25 to Isolate variable

-5a + 15/2a = 53.2 + 21.8 + 25: Combine Like Terms and create simmilar terms

-10/2a + 15/2a = 100: CLM again

5/2a = 100: multiply both sides by inverse of 5/2 to isolate variable

a = 40

Multiple Choice!

Which relation is symmetric with respect to the x-axis?

Answers

Option D, y = 3 is the correct answer

Helps me solve this problem please 6

Answers

Answer:

I believe its C

Hope that helps

Step-by-step explanation:

There are no other x's from your original 4 that are 3


Solve for the missing angle.
65
45
0 70
O 65
0 45
0 25

Answers

the first one - 70.
Why?
because a triangle has to equal to 180.
65+45=110
180-110=70
therefore the answer is, 70.

What is 153×694 pleas someone help me

Answers

The answer is 106,182

Answer:

106182

Step-by-step explanation:

Help needed ASAP will give brainliest and 5 STARS RATE

Answers

Answer:

C.

Step-by-step explanation:

What are the solutions of 6t-1> 4t+13

Answers

answer:t>7

6t - 1> 4t + 13 Move the terms 6t - 4t> 13 + 1 Group the like terms Calculate 2t> 14 Divide both sides Solution t> 7 Alternate between E (7, + 0) Explain the steps> II

Rational numbers are

Terminating Repeating decimal.
Repeating decimal.
non-terminating decimal.
non-repeating decimal.
HELPPPP

Answers

Answer:

terminating repeating decomal

Step-by-step explanation:

Answer: terminating repeating decimal

Step-by-step explanation: In the subject of Mathematics, we usually classify numbers in several types: whole numbers, rational numbers, natural numbers, and real numbers. We also include decimals in these types. Decimals are used by us to convey a whole number and a fraction together. We do this by separating a whole number from the adjoining fraction by inserting “.” between them. This symbol is called a decimal point. In other words, decimals are just another way of representing fractions.

Thanks in advance!
filler filler filler filler filler

Answers

Answer:

C

Step-by-step explanation:

The base number is 2, and it's being multiplied 7 times, so 7 is the exponent

Hope this helps!

Which it the equation of the line that passes through the point (2,-1) and has a slope of -3?

Answers

Answer:

y=-3x-1

Step-by-step explanation:

slope formula is y=mx+b

so, ya just plug in. slope is -3 and b (y-value) is -1

what is the value of i^13

Answers

Answer: i

i¹³ = 1

i · i ·i ·i ·i · i · i · i · i · i · i  ·i · i = i

Answer:

i

Step-by-step explanation:

[tex]i^{13}[/tex] = i × i × i × i × i × i × i × i × i × i × i × i × i = i

I hope this helps!

What's 5+5????????????????

Answers

Answer:

10

Step-by-step explanation:

Are you okay

Do you need to talk to someone

10 I really hope this is a joke Pham

Which pair of numbers has a GCF of 6?

a.) 2 and 12
b.)8 and 24
c.)12 and 18
d.)1 and 6

Answers

c) 12and 18
...............
The answer is D because

plz help me this one is a lil tough

Answers

Answer:

100 degrees

Step-by-step explanation:

It's going through 140 and 40, 180 - 40 = 140

180 cause a flat line is 180 degrees

Answer:

140*

Step-by-step explanation:

the line is pointing through 40* and 100* which makes it that.

hope this helps! have a good day and stay safe!

id like brainliest but if not its ok!

(i got it wrong the first time but once i looked at it more i found it out)

Deshawn's Bikes rents bikes for $11 plus $5 per hour. Maria paid $51 to rent a bike. For how many hours did she rent the bike?

Answers

8 hours i hope this helps :)

sara wong spent $15 on three fancy pens.how much did each pen cost

Answers

Answer:

$5

Step-by-step explanation:

3 pens=$15

3x=15

3x÷3=x 15÷3=5

1 pen is $5

does anybody know the answer lol excuse the rohan cursor :p

Answers

Answer:

you will get no solutions

Answer:

No Solution

Step-by-step explanation:

y=-2×+4
x-5y=2
do you know how to do this promble if you don't it's fine

Answers

Answer:

x=2

y=0

Step-by-step explanation:

Substitute -2x+4 for the y value in the second equation to find the value of x. x=2

Then plug 2 in for x in the first equation to find y. y=0

answer x=y-4/2  

Step-by-step explanation:

-4=2x y-4/2=x

x=2+5y

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