2 years ago

write an expression that can be used to find 4 times 275 using mental math and properties of numbers.

2 answers:

6 0

Rough estimate: 4 times 300 = 1200

Properties of numbers: 4 times (300-25) = 4 times 300 - 4 times 25
= 1200 - 100
= 1100 (exact answer)

sashaice [31]2 years ago

4 0

(200×4) + (70×4) + (5×4)

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Please help me out !! Asap

Paraphin [41]

Answer:

(1,5)

Step-by-step explanation:

y = 4x+1

y = 2x+3

Set the two equations equal

4x+1 = 2x+3

Subtract 2x from each side

4x+1-2x = 2x+3-2x

2x+1 = 3

Subtract 1 from each side

2x+1-1 =3-1

2x=2

Divide by 2

2x/2 =2/2

x =1

Now find y

y =4x+1 = 4(1)+1 =4+1=5

(1,5)

8 0

2 years ago

Read 2 more answers

Find the volume of the cylinder. Use pi = 3.14* the height of 6 inches and a radius 4.5in

ArbitrLikvidat [17]

Answer: 381.51 cubic inches

Step-by-step explanation:

1. Use the formula: V = π $r^{2}$ h, or in this case, 3.14( $4.5^{2}$ )(6)

2. Simplify to 3.14(20.25)(6)

3. Simply multiply all three numbers using a calculator, or one by one if that's the preferred option.

4. You get: 381.51 cubic inches.

8 0

2 years ago

What are 64 real square roots

wlad13 [49]

The square roots of 64 are -8 and +8.

4 0

2 years ago

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Suppose a railroad rail is 3 kilometers and it expands on a hot day by 20 centimeters in length. Approximately how many meters w

siniylev [52]

Answer:

sadfasdfasdfasdf

Step-by-step explanation:

asdfasdfasdfsadfsadfsadfsdfsdfsaf

4 0

3 years ago

Hamburger Heaven is having a lunch special where customers buy one 1/4-pound cheeseburger and get one free. If they set aside 10

omeli [17]

Answer: D
Explanation:
amount of meat = 104 pounds
No. Of burgers = 104 / 1/4
= 104 x 4/1 = 416

5 0

2 years ago