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3 years ago

What expression represents the sum of 8 and twice a number

1 answer:

7 0

Idk if you have any choices or not but it should look like 8 + 2x
How to get the answer: sum means addition, and twice a number is 2 times it. We don't know the number so we'll use x. Two times a number is 2x
And since we are adding we will put an addition sign
8 + 2x

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What is 20x30 i need the answer nowwwwwwwwwwwwww

cestrela7 [59]

Answer: 600

<u>Step-by-step explanation:</u>

20 x 30

= 2 x 10 x 3 x 10

= 2 x 3 x 10 x 10

= 6 x 100

= 600

6 0

3 years ago

Ted says that 7 tenths multiplied by 10 equals 70 hundredths. Is he correct? Use a place value chart to explain your answers

shutvik [7]

No he isn't..
. 7×10=7
for each time it's multiplied by ten, the decimal point goes back one.

3 0

2 years ago

Two trains, Train A and Train B, weigh a total of 489 tons. Train A is heavier than Train B. The difference of their weights i

makvit [3.9K]

Answer:

Weight of Train A = 454 tons

Weight of Train B = 35 tons

Step-by-step explanation:

It is given that:

Let,

A represent weight of Train A

B represent weight of Train B

According to given information:

A + B = 489 Eqn 1

A - B = 419 Eqn 2

Adding Eqn 1 and 2

A + B + A - B = 489 + 419

2A = 908

Dividing both sides by 2

$\frac{2A}{2}=\frac{908}{2}\\A = 454$

Putting A = 454 in Eqn 1

454 + B = 489

B = 489 - 454

B = 35

Therefore,

Weight of Train A = 454 tons

Weight of Train B = 35 tons

5 0

2 years ago

Please don't give me a FILE<br> PLEASE HELPPP ILL GIVE 15 POINTS AND BRAINLIST

pickupchik [31]

Answer:

3/2

Step-by-step explanation:

My reasoning is that the sum of the numbers in the left is equal to the sum of the numbers in the right.

Therefore 6=2y+3

2y=6-3

2y=3

y=1.5 or 1and a half which is equivalent to 3/2

4 0

2 years ago

What's the pattern of 160,80,40,20,10

Brrunno [24]

The pattern is that each number is decreasing by half

3 0

3 years ago

Read 2 more answers