There are 165 laptops and desktop computers in a lab. There are 9 more laptops than desktop computers. What is the total number of laptops in the lab?

Answer: 25%

The percentage change between 64 and 80 is a 25% increase.

Step-by-step explanation:

Answer:

Percent of increase - 80 - 64 = 16

% increase = Increase ÷ Original Number × 100.

= 16 ÷ 64 × 100

= 25 ℅

Answer:

[tex]\huge\boxed{\sf 3.5}[/tex]

Step-by-step explanation:

Distance = [tex]\sf 6 \frac{1}{2} \ units = 6.5 \ units[/tex]

Here X is -3

So,

Point Y = -3 + 6.5 = 3.5

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

B

Step-by-step explanation:

so we know x is -3

we also know that the number has to be 6.5 units away from -3

so, -3 plus 6.5 is 3.5

-3 minus 6.5 is -9.5

Either 3.5 or -9.5 would work but 3.5 is the only listed option, so the answer is B

Answer:

R=(F/3-4)/2

Step-by-step explanation:

Father = F

Joe = J

Alexa = A

R= Rocky

F=3J

A+4=J

A=2R

F/3=J

A=J-4

A=F/3-4

2R=F/3-4

R=(F/3-4)/2

Hope this helps!

Step-by-step explanation:

The equation of the line is y = 279.

Answer:

x would be = to 13

Step-by-step explanation:

The number of minutes that Abby spend working on her science project altogether is 56 minutes.

From the information, Abby spent 22 minutes working on her science project yesterday and 34 minutes working on today.

Therefore, the time used altogether will be the addition of the time used for both occasions

= 22 minutes + 34 minutes

= 56 minutes

This illustrates addition.

Learn more about time on:

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Answer: the answer is 24

Step-by-step explanation: all you need to do is add 38 and 21 which is 66 then subract it by 90 which is the degree size.

Answer:

8 ft

Step-by-step explanation:

the ladder will make a right angle triangle with the house. The hypotenuse of the triangle is the ladder, 20 ft, and the height of the triagnle is 18 ft.

Solve for the base of the right angle triangle using pythagorean's theorem:

c=20, a=18, b=?

[tex]b^{2}=c^{2} - a^{2}\\b^{2}=20^{2} - 18^{2}[/tex]

[tex]b=\sqrt{72}[/tex]

[tex]b= 8.49 ft[/tex]

round to the nearest foot,

b = 8 ft

Answer: He has earned $200 interest and the balance of his account is $1,200.

Step-by-step explanation:

Given: Principal : P = $1,000

Simple interest rate : r = 5% = 0.05

Time: t = 4 years

Simple interest = [tex]Prt[/tex]

[tex]=1000\times0.05\times4=200[/tex]

i.e. Simple interest = $200

Balance of account = Principal + Simple interest

=  $1,000 + $200

= $1,200

Hence, he has earned $200 interest and the balance of his account is $1,200.

Answer:

I think it is C.

Step-by-step explanation:

Answer:

The answer is 7, 8 and 9. The Two-digit numbers are: ab, ac, ba, bc, ca, cb

The Sum of them is: 10a + b + 10a + c + 10b + a + 10b + c + 10c + a + 10c + b = 528

22a + 22b + 22c = 528

a + b + c = 528/22

a + b + c = 24      The only option of three different digits with the sum of 24 is 7, 8 and 9.

Hope this helps, stay safe, and merry christmas!

Answer:

5 inches

Step-by-step explanation:

[tex]\frac{1}{3} =\frac{x}{15}\\3x=15\\x=5[/tex]

Answer:

49% and 30% respectively

Step-by-step explanation:

Step one:

Given data

Principal =  Rs. 4,200

Final Amount= Rs. 9282 respectively

time = 2 years and

time = 4 years

Required

The rate of interest for 2 and 4 years

Step two:

the compound interest formula is

A= P(1+r)^t

for 2 years

Substitute

[tex]9282= 4200(1+r)^2\\\\9282/4200= (1+r)^2[/tex]

[tex]1+r= \sqrt{\frac{9282}{ 4200} }\\\\1+r= \sqrt{2.21} \\\\1+r= 1.49\\\\r=1.49-1\\\\r= 0.49\\\\[/tex]

the rate is 49%

For 4 years we have

[tex]9282= 4200(1+r)^4\\\\9282/4200= (1+r)^4[/tex]

[tex]1+r= \sqrt[4]{\frac{9282}{4500} } \\\\1+r=\sqrt[4]{2.21} \\\\1+r= 1.30\\\\r=1.30-1\\\\r= 0.30\\\\[/tex]

the rate is 30%

Answer:

14x-21y

Step-by-step explanation:

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. This is:

  7(2x – 3y)

= 7(2(6) – 3(-2))

= 7(12 + 6)

= 7(18)

From your previous questions, you know

(3w + w⁴)' = 3 + 4w³

(2w² + 1)' = 4w

So by the quotient rule,

R'(w) = [ (2w² + 1)•(3w + w⁴)' - (3w + w⁴)•(2w² + 1)' ] / (2w² + 1)²

That is, the quotient rule gives

R'(w) = [ (denominator)•(derivative of numerator) - (numerator)•(derivative of denominator) ] / (denominator)²

I'm not entirely sure what is meant by "unsimplified". Technically, you could stop here. But since you already know the component derivatives, might as well put them to use:

R'(w) = [ (2w² + 1)•(3 + 4w³) - (3w + w⁴)•(4w) ] / (2w² + 1)²

Answer:

2- the ratio would be 5:20

3- the ratio would be 6:2

4- the ratio would be 20:7

Step-by-step explanation:

hope this helps! have a great day/night :)

Answer:

5:20

6:2

20:7

Step-by-step explanation:

Answer:

First Box: 3/6 --- 1/2

Second Box: 3/10

Answer:

8 feet

Step-by-step explanation:

Since 4 feet is in the middle, multiply it by 2. It is 8.

the answer would be -6

Answer:

100%

Step-by-step explanation:

percentage change is

(new price - old price) / old price

2 - 1 / 1

1 * 100% = 100%

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Answer:

No

Step-by-step explanation:

They are not equivalent fractions

Answer:

No, they are not equivalent

Step-by-step explanation:

Answer:

Part 3: 9 Dogs

Step-by-step explanation:

It says that the ratio they want you to put it in is dogs/students, so dogs are x, and students are y, so if there are 4 students for every dog, 36 students would require 9 dogs

And if the roles were switched it would be students x, dogs y, and there would be 9 students for 36 dogs :D

Answer:

the anwer is idcause i didnt workmit ut jus like you

Step-by-step explanation:

Answer:13

Step-by-step explanation:

you add 52+63= 115

115-180=65

5x=115

X=13

Answer:

runner B

Step-by-step explanation:

it is lower. and is going slower than A. ( I know this because the line for runner B is lower than runner A)

Answer:

The value of x is 20 ⇒ A

Step-by-step explanation:

When a line intersects two parallel lines, then some pairs of angles are formed

In the given figure

∵ Lines l and m are parallel

∵ They are intersected by a line

∴ The angles of measures (3x + 5)° and 65° are alternate interior angles

→ That means they are equal in measures

∵ Alternate interior angles are equal in measures

∴ (3x + 5)° = 65°

→ Subtract 5 from both sides

∵ 3x + 5 - 5 = 65 - 5

∴ 3x = 60

→ Divide both sides by 3

∴ x = 20

∴ The value of x is 20

Answer:

800 dolls

Step-by-step explanation:

Step one:

given  data

we are told that the ratio of the number of male dolls to the number of female dolls is 3:5 , i.e male dolls to female dolls is 3 to 5

given that there are 500 female dolls, let the number of male dolls be x

Step two:

3/5= x/500

cross multiply we have

3*500=5x

1500=5x

divide both sides by 5

x=1500/5

x=300

hence there are 300 male dolls

The total dolls is 300+500= 800 dolls

Answer:

cone shape and cm 3

area of shape

Step-by-step explanation:

3 cm ×8 cm

24

please follow me all friends who are watching me who made answer

Answer:

x=22

Step-by-step explanation:

(x-2)^1 =5                  Anything to the 1st power is 1 Multiply both sides by 4                                                            

x-2=20                      Move the constant (20) to the right and change its

x=20+2                      sign

x=22

Answer:

the answer is b

Step-by-step explanation:

Answer:

D i believe

Step-by-step explanation:

hope this helped!!!

-BB