MATHEMATICS MIDDLE SCHOOL

Amina sees a discount of 5% on a laptop. She can calculate the amount she has to pay for the laptop using the expression b – 5/100 b, where b is
the price of the laptop before the discount. If the price after discount is $494, which number from the set {500, 505, 510, 520, 525} is the value of b?

Answers

Answer 1
Answer:

Answer:

The value of b is 520.

Step-by-step explanation:

Here, b represents the price of the laptop,

Since, discount percentage = 5 %,

So, the discount = 5% of b = (5b)/(100)

Thus, the price of laptop after discount = Original price of laptop - Discount

=b-(5b)/(100)

According to the question,

b-(5b)/(100)=494

(100b-5b)/(100)=494

(95b)/(100)=494

95b=49400

b=(49400)/(95)=520

Hence, the value of b is 520.
Answer 2
Answer: form an equation: b-5/100 b=494. 95/100b=494. 494*(100/95)=b b=520

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A 100% increase followed by a 33.33% decrease
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3. The first car of the train, right behind the engine, contains 10 boxes. In each of the followingcars there are twice as many boxes as in the car in front of it.
How many boxes are there in the fifth car?
(A) 100
(B) 120
(C) 140
(D) 160
(E) 180

Answers

Answer:

10×2=20 second car

20×2=40 third car

40×2=80 fourth car

80×2=160 fifth car

Eli's office recycled a total of 12 kilograms of paper over 6 weeks. After 9 weeks, how many kilograms of paper will Eli's office have recycled

Answers

18 kg

12kgs ÷ 6 weeks = 2kgs a week

2kgs × 9 weeks = 18kgs

\begin{array}{ccc}6\ weeks&-&12\ kg\n9\ weeks&-&x\ kg\end{array}\qquad\text{cross multiply}\n\n(6)(x)=(9)(12)\n\n6x=108\qquad\text{divide both sides by 6}\n\n\boxed{x=18}\n\nAnswer:\ \text{Eli's office recycled 18\ kg\ of\ paper.}

Are the equal. grater or less 300,000+50,000+1,000+800 or six hun 5 thou 908

Answers

300000 + 50000... Is less than

A bottle holds 2 pints. A carton holds 3 cups. What is the total the two containers hold in fluid ounces?

Answers

The two containers hold jointly 67.25 fluid ounces.

What is the unitary method?

The unitary method is a method in which you find the value of a unit and then the value of a required number of units.

Given here: A bottle holds 2 pints and a carton holds 3 cups.

we know 1 pint =19.22 fluid ounces

Thus 2 pints=38.4304

And 1  cup = 9.6076

Thus 3 cups =28.8228

Total liquid in fluid ounces = 38.43+28.82

                                            =67.25

Hence, The two containers hold jointly 67.25 fluid ounces.

Learn more about the unitary method here:

brainly.com/question/22056199

#SPJ3

Answer: Your answer is 56

Step-by-step explanation: o, we will convert pints and cups into fluid ounces:

The capacity of the bottle = 2 pints = 2 × 16 ounces = 32 ounces

The capacity of the carton = 3 cups = 3 × 8 ounces = 24 ounces

Therefore,

The total capacity of the two containers is,

= 32 + 24

= 56 fluid ounces

Thus, the total of the two containers hold in fluid ounces is → 56 fluid ounces.

Henry can build 2 birdhouses in 30 minutes. How many birdhouses can he build in four hours? A)
4 birdhouses


B)
8 birdhouses


C)
12 birdhouses


D)
16 birdhouses

Answers

4 hours is 8 half hours 
8*2 is 16 so the answer is d

Hope this helps :)
Ok So, He's making 2 birdhouses in 30 minutes, A Hour is 60 Minutes. So that equals 4 birdhouses a hour, So you would just simply think "Ok, So 4,8,12,16 Ok so the Answer is 16." The the answer is D i hoped this helped.

Given that A = (9,9,2), B = (1,3,5) and C = (5,6,4), find the vector equation of the line through A and B.a.r=(8,6,-3)+t(9,9,2)
b.r=(9,9,2)+t(-8,-6,3)
c.r=(9,9,2)-t(-8,6,-3)
d.r=(9,9,2)-t(8,-6,3)

Answers

Answer:

It's not C

Step-by-step explanation:

Sorry bud I tried to help you out but i guessed wrong on my test, atleast its not C though:)

Answer:

The answer is B.r=(9,9,2)+t(-8,-6,3)

Step-by-step explanation:

Got it right on the quiz on Edge.

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