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ikadub [295]
3 years ago
15

- 7th Grade Work - I rlly need help ; - ;

Mathematics
1 answer:
Tanya [424]3 years ago
8 0

Answer:

The length would be 1.5x + 5.

Step-by-step explanation:

So first with this, note that 2 length + 2 height gives the perimeter of the rectangle.

Given this:

2(1/2x + 4) + 2(?) = 4x+18

x+8 + 2(?) = 4x+18

2(?) = 3x+10

? = 1.5x+5

1.5x + 5 = 1.5x + 5

The length would be 1.5x + 5.

To double check, by plugging in 1.5x + 5 back into the equation for the perimeter, you will get the same perimeter:

2(1.5x + 5) + 2(1/2x+4) = P

3x+10 + x+8 = P

4x + 18 = P

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Answer:

It is A

Step-by-step explanation:

3 0
3 years ago
The average age of 6 men is 35 years and
PSYCHO15rus [73]

Answer:

39.50

42.50

Step-by-step explanation:

Age of the 2 men = sum of the ages of the 6 men - sum of the ages of the 4 men

Average = sum of ages / total number of men

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sum of ages = 35 x6 = 210

32 = sum of ages / 4

32 x 4 = sum of ages

128

210 - 128 = 82

age of the younger man = x

age of the older man = 3 + x

x + 3 + x = 82

2x + 3 = 82

2x = 82 - 3

2x = 79

x = 79/2 = 39.5

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7 0
3 years ago
The. Approximate value of 200,000×200
SCORPION-xisa [38]

Answer:it would be 40000

Step-by-step explanation:

6 0
3 years ago
Change 1.4 to a fraction. <br> 1/4<br> 1 1/4<br> 1 1/2<br> 1 2/5
dusya [7]
1.4
= 1+ 0.4
= 1+ 4/10
= 1+ (4/2) / (10/2)
= 1+ 2/5
= 1 2/5

The final answer is 1 2/5.


3 0
3 years ago
Read 2 more answers
4x + -2 = 2x +4
iris [78.8K]
You do 4x — 2x which equals 2x then you do -2 —4 which equals -6 then you have 2x=-6. so you divide -6/2 and your answer is X=-3. Oh you check by replacing the Xs with -3 and see if the equation is true.
8 0
3 years ago
Read 2 more answers
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