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makvit [3.9K]
3 years ago
8

20=7x+4-5x what is x

Mathematics
2 answers:
defon3 years ago
7 0
Combine like terms
20=2x+4

Subtract 4 from both sides
16=2x

Divide both sides by 2
8=x

Final answer: x=8
natita [175]3 years ago
5 0

Answer:

8

Step-by-step explanation:

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A rectangular parcel of land is 70 ft longer than it is wide. Each diagonal between opposite corners is 130 ft. What are the dim
Bingel [31]
We have the following dimensions:
w=wide
w+70=length

We have a right triangle:
leg₁=w
leg₂=w+70
hypotenuse=130

Pythagoras theorem:
leg₁²+leg₂²=hypotenuse²
Then:

w²+(w+70)²=130²

We have to solve that equation:
w²+(w+70)²=130²
w²+w²+140w+4900=16900
2w²+140w+4900-16900=0
2w²+140w-12000=0
(2w²+140w-12000)/2=0/2
w²+70w-6000=0

w=(-70⁺₋√(4900+24000)) / 2
=(-70⁺₋170) / 2
We have two possible solutions:
Solution 1

w=(-70-170)/2=-120   (this solution is not possible because the result is negative and it have no sense in this problem).

Solution 2

w=(-70+170)/2=50  (this is the right solution)

w=50
w+70=120

ANSWER:  the length would be 120 u  (u=units of length ) and the wide would be 50 u.
5 0
3 years ago
Add the snap at ashleianaa 8th-9th only !​
Tanya [424]

Answer:

Step-by-step explanation:

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6 0
3 years ago
Write the number with the least value using the digits 1 through 9.use each digit only once.
amm1812
It would be 123,456,789 (if not counting decimals)

decimals would be like 0.123456789
8 0
3 years ago
Read 2 more answers
Which of the following has 6.053 in written form?
erastovalidia [21]

Answer:

c correct

Step-by-step explanation:

8 0
3 years ago
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Can somebody help me simplify these problems please?
Mazyrski [523]
1: answer: 4^6 ( reduce the fraction with 4^3)

2: answer: 1 ( any nonzero expression raised to the power of 0 equals 1 )

3: answer 3^8
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3^2×4 = 3^8 ( multiply the 2 and the 4 exponent to get a 8 as a exponent )
7 0
3 years ago
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