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Ede4ka [16]
3 years ago
13

Solve (3x+7)=4x for x

Mathematics
2 answers:
creativ13 [48]3 years ago
4 0

Answer:

x=7

Step-by-step explanation:

(3x+7)=4x

Subtract 3x from each side

(3x+7) -3x=4x-3x

7 = x

sdas [7]3 years ago
3 0

Answer:

x = 7

Step-by-step explanation:

(3x + 7) = 4x

3x + 7 = 4x

7 = 4x - 3x

x = 7

Hope this helps, and please mark me brainliest if it does!

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3 years ago
the sum of 3 decimal numbers is 6. Exactly one of the numbers is less than 1 what could those numbers be.
kati45 [8]
There are infinitely many solutions to this problem (which is why it asks what could those numbers be), so you just have to make one up!

Start with the first sentence.
x + y + z = 6.0

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0.7 + y + z = 6.0

Now I'll subtract 0.7 from both sides to see what y and z have to add up to.

0.7 + y + z - 0.7 = 6.0 - 0.7
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Now I'll choose a random number for y that's less than 5.3.

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And subtract 2.6 from both sides to find z.

2.6 + z - 2.6 = 5.3 - 2.6
z = 2.7

And now we have our numbers!
x = <u>0.7</u>
y = <u>2.6</u>
z = <u>2.7</u>
3 0
3 years ago
The graph of y=f(x) is above. If f(−4)=k, what is the value of f(k)?
cupoosta [38]

Answer:

B

The answer is B, which is -1.5.

3 0
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Use the slope formula to determine the equation of the line (2,.75) and (4,.25)
guajiro [1.7K]

Answer:

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Step-by-step explanation:

hope this helps u

6 0
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The following steps are used to rewrite the polynomial expression, 3(x + 4y) + 5(2x - y).
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Answer:

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Step-by-step explanation:

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