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3 years ago

90+2x=4x can you please help me solve this with steps

Mathematics

2 answers:

Semmy [17]3 years ago

5 0

Answer:

x=45

Step-by-step explanation:

90+2x=4x

2x=4x-90

2x-4x=-90

-2x=-90

x= -90/-2

x=45

Vsevolod [243]3 years ago

3 0

Answer:

90=4x-2x

90=2x

x=90/2

x=45

The answer is 45.

Step-by-step explanation:

Please mark me as brainliest!!!

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Nathan has to read < 25 minutes every night.

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4 years ago

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An airplane descends 1.6 miles to an elevation of 6.95 miles. Find the elevation of the plane before its

kolezko [41]

Answer:

Step-by-step explanation: First, let's call the starting elevation of the plane: e

We can then write an equation representing this problem as:

e−1.5mi=5.25mi

Now, add 1.5mi to each side of the equation to solve for e

while keeping the equation balanced:

e−1.5mi + 1.5mi=5.25mi + 1.5mi

e−0=6.75mi

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8 0

3 years ago

Which linear function show a direct variation

xz_007 [3.2K]

Answer:

it should be answer choice c but im not positive

Step-by-step explanation:

6 0

3 years ago

One way to find a common denominator is by

Lena [83]

Answer:

Step-by-step explanation:

a). $1\frac{3}{5}=1+\frac{3}{5}$

$=1+\frac{3}{5}\times \frac{4}{4}$

$=1+\frac{12}{20}$

$=1\frac{12}{20}$

$1\frac{3}{4}=1+\frac{3}{4}$

$=1+\frac{3}{4}\times \frac{5}{5}$

$=1+\frac{15}{20}$

$=1\frac{15}{20}$

Therefore, common denominator of 20.

b). $2\frac{1}{2}=2+\frac{1}{2}$

$=2+\frac{1}{2}\times \frac{5}{5}$

$=2+\frac{5}{10}$

$=2\frac{5}{10}$

$\frac{4}{5}=\frac{4}{5}\times \frac{2}{2}$

$=\frac{8}{10}$

Common denominator of 10.

c). $\frac{3}{8}=\frac{3}{8}\times \frac{6}{6}$

= $\frac{18}{48}$

$\frac{1}{6}=\frac{1}{6}\times \frac{8}{8}$

= $\frac{8}{48}$

Common denominator of 48.

3 0

3 years ago

Factor x^2 + 2x + 4 i am confused

3241004551 [841]

Answer:

x^2 +2x +4

x^2 +2x +(2/2)^2-(2/2)^2+4

(x+1)^2-1+4

(x+1)^2+3=0

(x+1)^2= -3

(x+1)= ±√-3

Since a negative number cannot be square rooted,

there are no solutions to this equation.

Hope this helps:)

6 0

3 years ago