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Kamila [148]
3 years ago
12

Write and solve an equation to find the value of x

Mathematics
2 answers:
makkiz [27]3 years ago
7 0
The answer would be x=10
emmainna [20.7K]3 years ago
4 0
Equation: 4x+3=43

Solved: 4x=43-3
4x=40
X=10
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Plz help ill give 15 points
yan [13]

Answer:

b

Step-by-step explanation:

5 0
2 years ago
an elevator can carry 800 of weight. A football player weighting 280 pounds gets on the elevator with a student. Write and solve
Nesterboy [21]

Answer:

425\geq x

425 pounds or less can be added after the student and football player.

Step-by-step explanation:

let x = remaining weight

(note that >/= is greater than or equal to.)

800 - 280 - 95 >/= x

425 >/= x

8 0
2 years ago
Please answer correctly
Scrat [10]
I think it’s 55.6 square inches

Sorry if I’m wrong! :)
5 0
2 years ago
Solve for x : log(3x) + log(x + 4) = log(15).<br><br>Please explain it to me.​
zlopas [31]

Answer:

x = 1

Explanation:

\sf \rightarrow log(3x) + log(x + 4) = log(15)

Rule: log(a) + log(b) = log(ab)

\sf \rightarrow log(3x(x + 4)) =  log(15)

cancel out log on both sides

\sf \rightarrow 3x(x + 4) = 15

relocate constant variable

\sf \rightarrow 3x^2 + 12x -15 = 0

take 3 as a common factor

\sf \rightarrow 3(x^2 + 4x -5) = 0

divide both sides by 3

\sf \rightarrow x^2 + 4x -5 = 0

middle term split

\sf \rightarrow x^2 + 5x -x-5 = 0

factor common terms

\sf \rightarrow x(x  + 5) -1(x+5)= 0

collect into groups

\sf \rightarrow (x-1)(x+5)= 0

set to zero

\sf \rightarrow x-1 = 0 , \ x+5= 0

relocate variables

\sf \rightarrow x = 1,  \ x = -5

There must be a positive solution for log, so the solution is only x = 1

3 0
1 year ago
Read 2 more answers
I need help asap.......
Vilka [71]
What do you need help with I will respond
4 0
3 years ago
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