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fiasKO [112]
2 years ago
7

Solve 8X+4Y=40 for Y

Mathematics
1 answer:
JulsSmile [24]2 years ago
6 0

Answer:

y = -2x + 10

Step-by-step explanation:

8x + 4y = 40

4y = -8x + 40

y = -2x + 10

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A rectangle's width is 1/3 its length and its perimeter is 40 m. find the dimensions of the rectangle
Rina8888 [55]

Answer:

Length = 15m

Width = 5m

Step-by-step explanation:

w = 1/3l

p = 2l + 2/3l

40 = 2 2/3 l

l = 15

w = 1/3(15)

w = 5

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

8 0
3 years ago
Leeza did this to solve an equation. Did she makes an error 4x=7+3(2x-5) 4x=7+6x-5
katrin [286]

Yes, there was a mistake in applying the distributive property. If you have to perform

3(2x-5)

you have to multiply both terms in the parenthesis by 3, not just the first one.

So, the correct expansion would be

3(2x-5) = 3\cdot 2x - 3 \cdot (-5) = 6x-15

8 0
3 years ago
Read 2 more answers
A circle has a radius of 6 cm. What is the area of the circle? (Use 3.14 for pi)
vampirchik [111]

Answer:

113.04 cm²

Step-by-step explanation:

area of a circle= πr²

= 3.14 x 6²

=3.14 x 36

= 113.04 cm²

5 0
3 years ago
Carli can walk 40 dogs in 8 hours. How many dogs can she walk in 12 hours?
Archy [21]

Answer:

60 dogs

Step-by-step explanation:

40/8 = 5 dogs per hour

12 x 5 = 60 dogs in 12 hours

7 0
3 years ago
One fifth of the sum of 9 and h
8090 [49]

Answer:

= (9 + h) /5

Step-by-step explanation:

One fifth  means 1/5

Sum of 9 and h = (9 +h)

One fifth of sum of 9 and h = 1/5 x (9 + h)

= (9 + h) /5

I hope this was helpful, Please mark as brainliest

8 0
3 years ago
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