MATHEMATICS MIDDLE SCHOOL

What value of a makes the equation true?1.7a + 0.3a = 4/5
btw 4/5 is a fraction

A. a= 2 4/5
B. a= 1 3/5
C. a= 2/5
D. a= 1 1/5

Answers

Answer 1
Answer:

Answer: C) a = 2/5

1.7a+0.3a simplifies to 2.0a or just 2a. We have the equation 2a = 4/5. If we multiply each side by 1/2, then we can isolate 'a' fully to get

2a = 4/5

(1/2)*2a = (4/5)*(1/2)

(2/2)a = (4*1)/(5*2)

1a = 4/10

a = 2/5

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Factor the expression. 4d + 12 Enter your answers in the boxes.

Answers

4d + 12 = 4(d + 3)
Basically, you just need to determine what 4d and 12 have in common.  In this case, they both divide evenly by 4. Therefore 4 (d + 3) = 4d + 12 according to the distributive property. 

(d + 3) = 4d + 12

Step-by-step explanation: none

atiba plays for the linden woods vipers in the winnipeg youth soccer league the ratio of players to soccer balls at practice sessions is 5:2 how many soccer balls are needed for 20 players

Answers

Answer:

8

Step-by-step explanation:

Divide 20 by 5 to get 4 then multiply that why 2.

Please, help I don’t understand what im supposed to do.

Answers

Answer:

16,800 votes.

Step-by-step explanation:

In the singing competition 42,000 votes were counted.

The winner received 3/5 of the votes.

The part of the votes that the winner did not receive was 1 - 3/5 = 2/5

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❤Please answer❤Yesterday a parking lot had 10 cars parked in the parking lot, 40% were silver, 3 were red, and the rest were blue. How many of the cars were blue?A. 2 Cars
B. 5 Cars
C. 3 Cars
D. 8 Cars

Answers

Answer:

C: 3 Cars

Step-by-step explanation:

40% of 10 is 4.

10 - 4 ( silver cars ) = 6

6 - 3 ( red cars ) = 3

So there are 3 blue cars.

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The answer is c. 3 because 40% of 10=4+3=7. 10-7=3 therefore, the answer is three

Figure 2 length 10 width find perimeter and area

Answers

Alrighty man, I'm gonna teach you a math.
If you're looking for perimeter, thats how long the shape is on the outside. To find the perimeter, add your base and your height and multiply it by two. For us, height is 10, and base is 2. 10+2x2= 24.
To find area, you have to multiply the base times the height. 10x2= 20
The area is 20 units squared and the perimeter is 24 units. 
The answer to that question is four

What number has the same value as 50 tens

Answers

500, 50 tens, you have to do five times ten and it equals five hundred, so the answer is 500
50*10 equals 500. That means the answer is 500. (Ten tens in 100 so 50 tens would be 500)
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