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4 years ago

Can you help me answer this question 2 + x for x = 7

Mathematics

1 answer:

Deffense [45]4 years ago

3 0

Answer:

Step-by-step explanation:

Given

x=7

So,

2 +x

= 2+7

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3(4x-2)-5x=6-7(-x-2)

Marina CMI [18]

123453242463563276890798765432

its -2

6 0

4 years ago

Michele is 52 inches tall her father is 6 feet 3 inches tall exactly how many inches taller is Michele,s father than Michele

Stella [2.4K]

52 inches = 4 foot 3 so Michele's father is 2 feet taller than Michele

4 0

3 years ago

The surface area of each face of a cube is (x

Assoli18 [71]

Answer:

length of each edge = (x + 3)

Step-by-step explanation:

The surface area of each face of the cube = ( $x^{2}$ + 6x + 9) $m^{2}$ . But the surface of a cube has the shape of a square. So that,

Area of a square = length x length

= $l^{2}$

By factorizing the area,

$x^{2}$ + 6x + 9 = $x^{2}$ + 3x + 3x + 9

= ( $x^{2}$ + 3x) (3x + 9)

= x(x +3) + 3(x + 3)

= (x + 3)(x + 3)

= $(x + 3)^{2}$

$x^{2}$ + 6x + 9 = $(x + 3)^{2}$

Thus,

$(x + 3)^{2}$ = $l^{2}$

find the square root of both sides

l = (x + 3)

length of each edge = (x + 3)

3 0

3 years ago

mark wants to paint a mural. He has 1 1/3 gallons of yellow paint, 1 1/4 gallons of green paint, and 7/8 gallon of blue paint. m

KatRina [158]

we have

Yellow paint

$1\frac{1}{3} =(3*1+1)/3\\ \\ =\frac{4}{3} gal$

Find the
amount of yellow paint left after painting the mural

$(\frac{4}{3} -\frac{3}{4} )=(4*4-3*3)/12\\ \\ =\frac{7}{12} gal$

Green paint

$1\frac{1}{4} =(4*1+1)/4\\ \\ =\frac{5}{4} gal$

Find the
amount of green paint left after painting the mural

$(\frac{5}{4} -\frac{3}{4} )=(5-3)/4\\ \\ =\frac{2}{4} gal$

Blue paint

$\frac{7}{8}gal$

Find the
amount of blue paint left after painting the mural

$(\frac{7}{8} -\frac{3}{4} )=(7-2*3)/8\\ \\ =\frac{1}{8} gal$

Find the
total amount of paint left after painting the mural

$\frac{7}{12} +\frac{2}{4} +\frac{1}{8} =\frac{(2*7+6*2+3*1)}{24} \\ \\ =\frac{29}{24} gal$

$\frac{29}{24} =1\frac{5}{24} gal$

therefore

the answer is

$1\frac{5}{24} gal$

7 0

3 years ago

Read 2 more answers

Hoses A and B spout water at different constant rates, and hose A can fill a certain pool in 6 hours. Hose A filled the pool alo

Naddik [55]

Answer:

18 hours

Step-by-step explanation:

Let the volume of the pool be x. Since pipe A filled the pool in 6 hours, the rate of pipe A = x / 6.

Let the rate of pipe b be y, Hose A filled the pool alone for the first 2 hours, this means that the volume filled in the 2 hours is x/6(2 hours) and the two hoses, working together, then finished filling the pool in another 3 hours for the 3 hours the volume filled is x/6(3) + y(3). hence the total time is:

x/6(2) + x/6(3) + y(3) = x

x/3 + x/2 + 3y = x

Multiply through by 6:

2x + 3x + 18y = 6x

5x + 18y = 6x

18y = x

y = x/18

The rate of pipe B is x/18, this means it would take pipe B 18 hours to full the pool alone

8 0

4 years ago