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

Answers

Answer 1

Answer:

99

Step-by-step explanation:

You can solve it by Squaring/multiply 18 by itself and 15 by itself then subtract them both:

(18 × 18) - (15 × 15)

324 - 225

99

You could also do difference of two squares:

(x² - y²)

= (x + y) (x - y)

= (18 + 15) (18 - 15)

= (33) (3)

= 99

Answer 2

Answer:

99

Step-by-step explanation:

Evaluate

= (18)^2-(15)^2

= 324 - 225

= 99


Related Questions

A ​112-inch pipe is cut into two pieces. One piece is three times the length of the other. Find the length of the shorter piece.

Answers

Let the smaller piece be x .

Then the larger angle will be = 3x

An equation to find the length of each of the two pieces :-

[tex]x + 3x = 112[/tex]

[tex]4x = 112[/tex]

[tex]x = \frac{112}{4} [/tex]

[tex]x = 28[/tex]

Which means :-

Length of the shorter piece = 28 inches

Length of the larger piece = 28 × 3 = 84 inches

Therefore , the length of the shorter piece = 28 inches .

the length between the bases field is 90 feet. A scale drawing shows the distance between the bases as 2 1/2 inches. One inch on this drawing equals how many feet?

Answers

Im a la fin de mon père il est pas trop beau c’est trop cool de te voy

Answer:36

Step-by-step explanation:

100 to 150

options:

option 1: 50% decrease
option 2: 50% increase
option3: 33%increase
option 4: 1/2% increase

Answers

Answer:

50% increase

hope this helped

Yes the answer is 50% increase :)

the endpoints of line GH are G(0,4) and H(-6,2). find the coordinates of the midpoint M

Answers

Answer: The point G is G(18,-9)

Step-by-step explanation:

Midpoint:

Write the formula for midpoint of the A(x_1,y_1) and B(x_2,y_2).

[(x_1+x_2)/2,(y_1+y_2)/2]

G(x,y), H(-2,9)

(8,0) =[(x+(-2))/2,(y+9)/2]

(x+(-2))/2 =8

(x+(-2))=16

x-2 =16

x =18

(y+9)/2=0

y+9=0

y=-9

The point G is G(18,-9)

(answer found from user homeworkhelp on mathskey.com)

What is the area of the pentagon shown?

Answers

Answer:

The area of the pentagon is: 354

Step-by-step explanation:

First draw two auxillery lines in the upper left hand corner to make a rectangle, and a right triangle.

Now that we have a rectangle we can find its area:

18·20=360

To find the lengths of the triangle sides:

20-16=4

18-15=3

Area of a right triangle formula: (leg a · leg b)/2

3·4=12 12/2=6

Now subtract the area of the triangle from the rectangle:

360-6=354

Answer:

354

Step-by-step explanation:

An art teacher is organizing identical groups of supplies that the teacher can make if there are no colored pencils. what is the greatest number of groups of supplies that the teacher can make if there are no colored pencils left over? how many of each color are in the group of supplies?​

Answers

Answer:20

Step-by-step explanation:

The answer to this is 20

!/8 pound of fertilizer covers 25 square feet of ground, how much fertilizer, in pounds, is needed to cover 1 square foot ground?

Answers

Answer:

1/200 pounds

Step-by-step explanation:

Given ratio

1/8 pound ⇔ 25 square feet

To find

x ⇔ 1 square foot

Divide both sides by 25

1/8÷25 pounds ⇔ 25÷25 square feet1/200 pounds ⇔ 1 square foot

find the slope... both are -4/6 right?

Answers

Answer:

yes

Step-by-step explanation:

what solution does the equation |4x+7|=-3 have

Answers

Answer: No solutions

The result of an absolute value function is never negative. This is because absolute value represents distance on a number line, and negative distance is not possible. Negative distance doesn't make sense.

So we don't have solutions to something like |x| = -5 or the given equation. The right hand side must be 0 or a positive number if you want to have at least one solution.

If one penny, two dimes, and one quarter are added to the bag, what is the new probability that Marissa will draw a nickel? Write your answer as a fraction, as a decimal, and as a percent. 25% chance. (I gave all info please answer this:

In which situation is it more likely that Marissa will draw a nickel

Answers

Answer:

As a fraction it's ¼, as a decimal it's 0.25 and as a percentage it's 25%

Answer:

= 1/5

.2

20%

Step-by-step explanation:

In the bag there are 5 pennies, 4 nickels , 5 dimes, 2 quarters

We add 1 penny 2 dimes and 1 quarter

Now in the bag

6 pennies, 4 nickels, 7 dimes, 3 quarters

for a total of 20 coins

P ( nickel) = number of nickels / total

                 = 4/20 = 1/5

                  .2

                   20%

She is more likely to draw a nickel before the 1 penny 2 dimes and 1 quarter because there are fewer coins in the bag that are not nickels

HELP WILL MARK YOU BRAINLIEST HURRY IM ON A TIME LIMIT!’

Answers

(3x+5)+(x+3)=180

4x+8=180

4x=172

x=43

3(43)+5

<PQR=134

<SQR=46

Answer:

[tex]\boxed {\angle PQR = 134\textdegree}[/tex]

Step-by-step explanation:

Both angles are Supplementary (Two angles that add up to 180°). So, write an expression using the following measurements of both [tex]\angle PQR[/tex] and [tex]\angle RQS[/tex] and 180:

[tex]\angle PQR = 3x + 5[/tex]

[tex]\angle RQS = x + 3[/tex]

[tex]3x + 5 + x + 3 = 180[/tex]

Solve:

[tex]3x + 5 + x + 3 = 180[/tex]

[tex]4x + 5 + 3 = 180[/tex]

[tex]4x + 8 = 180[/tex]

[tex]4x + 8 - 8 = 180 - 8[/tex]

[tex]4x = 172[/tex]

[tex]\frac{4x}{4} = \frac{172}{4}[/tex]

[tex]x = 43[/tex]

-After you have the value of [tex]x[/tex], use it to the expression of [tex]\angle {PQR}[/tex] to get the actual answer of [tex]\angle PQR[/tex]:

-The value of [tex]x[/tex]:

[tex]x = 43[/tex]

-Solve for the measurement of [tex]\angle PQR[/tex]:

[tex]3x + 5[/tex]

[tex]3(43) + 5[/tex]

[tex]129 + 5[/tex]

[tex]134[/tex]

-The measurement of [tex]\angle PQR:[/tex]

[tex]\boxed {\angle PQR = 134\textdegree}[/tex]

Need help to solve 6/4y - 12 = 1/2y - 4​

Answers

Answer:

6/4y - 12 = 1/2y -4

3/2y -12 = 1/2y - 4

-1/2y          -1/2y

2/2y - 12 = -4           (2/2 = 1)

y - 12 = -4

+12      +12

y = 8

Step-by-step explanation:

Write an equation, in slope-intercept form, to model each situation. You rent a bicycle for $20 plus $2 per hour.​

Answers

y=2x+20 x represents hours

You spent $36 buying $9 storage crates
and $3 notebooks. This situation can be
modeled by the equation 9x + 3y = 36.
Find the x- and y-intercepts. Graph
the equation.

Answers

Answer:

y-intercept=-4

x-intercept=12

1 point
Solve: 0.75 (x + 200) = 150.5 (2 – 28)
type your answer...

Answers

Answer:

[tex] \huge \: x = - 5417.33[/tex]

Step-by-step explanation:

[tex]0.75 (x + 200) = 150.5 (2 – 28) \\ [/tex]

Expand the terms and simplify

That's

[tex]0.75x + 150 = 301 - 4214 \\ 0.75x + 150 = - 3913[/tex]

Subtract 150 from both sides of the equation

[tex]0.75x + 150 - 150 = - 3913 - 150 \\ 0.75x = - 4063[/tex]

Divide both sides by 0.75

[tex] \frac{0.75x}{0.75} = - \frac{4063}{0.75} \\ x = - 5417.333333[/tex]

We have the final answer as

x = - 5417.33

Hope this helps you

triangle abc with vertices a(-3 2) b(-1 7) and c(6 1) in the x-axis

Answers

Answer:

A'(-3, -2), B'(-1, -7), C'(6, -1)

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. If an object is transformed, all its points are also transformed. Types of transformation are reflection, rotation, dilation and translation

If a point X(x, y) is reflected across the x axis, the new location is X'(x, -y).

If triangle ABC is reflected across the x axis, the new vertices are A'(-3, -2), B'(-1, -7), C'(6, -1)

Can someone answer both of these questions?

Answers

Answer:

First one is 1260°

Second one is 720°

Step-by-step explanation:

Hope this helped :)

what do you think this is it's all good if you don't know

Answers

Answer:

$3.00; $7.29

Step-by-step explanation:

Find what 8% of $37.50 is:

x/37.50 = 8/100

cross multiply

x × 100 = 37.50 × 8

100x = 300

divide both sides by 100

x = 3

$3 is 8% of $37.50

If 8% was added to the bill, then add $3 to $37.50

3.00 + 37.50 = 40.50

Now find what 18% of 40.50 is

x/40.50 = 18/100

cross multiply

x × 100 = 40.50 × 18

100x = 729

divide both sides by 100

x = 7.29

$7.29 is 18% of the bill after sales tax

They tipped $7.29

Select the correct answer.
which number is the additive Inverse of –10 1/4
A. 10 1/4
B. -4 1/10
C 0
D 4/41


HELP FAST!!!


Answers

Answer:

is 0

Step-by-step explanation:

Answer:

A 10 1/4

Step-by-step explanation:

for the inverse of a fraction you just take away the -.

Which of the following expressions is a simplified form?​

Answers

it’s a
because a is simplified
I think it’s A because it was simplified

Find the slope of 3x+4y=-4

Answers

slope: -3/4
explanation: make the equation to “y=mx+b” by subtracting 3x on the other side, giving you the new equation “4y=-3x-4”. then, to get y by itself, divide 4 on both sides, getting the new equation “y=-3/4x-1”. since we know “mx” represents the slope, we now know that the slope is -3/4
let me know if i made a mistake

An equivalent fraction for 2/3 is ____

2/6

10/15

8/15

1/3

Answers

1/3 APEX I have on my test

8(-a+4)=-6a-8+8a
Can y’all help me

Answers

Answer:

a = 14.4

Step-by-step explanation:

8a/8 = a       8(-a+4)/8=-a+4      equation is now    -a+4=-6a-8

-6a/-6 = a      -a/-6=1/6a    equation is now   1/6a + 4 = a-8

a-8 + 8 = a      1/6a + 4 + 8 = 1/6a + 12     equation is now     a = 1/6a+12

5/6 are left of the variable  12/5=2.4    12 + 2.4 = 14.4

Help Meeeeeee!!!

The scale of a town map is 1 inch to 4 miles. On the map, the park and the airport are 6 inches apart. What is the actual distance between the park and the airport?

2/3 mile
1 1/2 miles
24 miles
10 miles

Answers

Answer:

24 miles

Step-by-step explanation:

scale: 1-4

distance: 6 feet

6x4=24

HOPE THIS HELPS!!!!

Answer:

24

Step-by-step explanation:

two boys received equal amounts of pocket money .after one had spent N$15 and the other had spent N$21,they had N$64 together .what were their original allowance?

Answers

Answer:

100

Step-by-step explanation:

15+21=36+64=100

What is the solution to the equation

7(3-x)=-7(x+3)-4

Answers

Answer:

No solution

Step-by-step explanation:

21−7x=−7x−21−4

21−7x=−7x−25

21=−25

No solution

Isabella bought 71.4 ounces of chocolate. 1.21 ounces of it was milk chocolate and the rest was dark chocolate. How much dark chocolate did Isabella buy?

Answers

Answer:

Isabella bought 70.19 ounces of dark chocolate.

Step-by-step explanation:

You want to subtract the total which is 71.4 minus the 1.21 ounces of the white chocolate, you then will get 70.19 ounces of dark chocolate. To be sure, you can add 70.19+1.21 and will get you the total amount of ounces of chocolate. Hope this helps :D

¶ THIS NEED TO BE TURNED IN 30 SECONDS ¶
FAKE ANSWERS WILL REPORTED : )

Answers

Answer:

The answer is B

PLEASE MARK ME AS BRAINLIEST

0505050505050505050 multiplied by 485948

Answers

Answer:

[tex]Product = 2.4542828 * 10^{24}[/tex]

Step-by-step explanation:

Given

[tex]Digit= 0505050505050505050[/tex]

[tex]Digit = 485948[/tex]

Required

Determine the product

The product is:

[tex]Product = 0505050505050505050 * 485948[/tex]

[tex]Product = 2.4542828 * 10^{24}[/tex]

37.2 is 10 times as much as what​

Answers

The answer is 3.72 is you are dividing. If you are multiplying the answer is 372
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