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Marysya12 [62]
3 years ago
5

What is the value of x in the equation 3x – 2y = 18, when y = 27?

Mathematics
2 answers:
Marina86 [1]3 years ago
6 0

Answer:

X is 24

Step-by-step explanation:

3x - 2y = 18

3x - 2(27) = 18

3x - 54 = 18

3x = 72

x = 24

d1i1m1o1n [39]3 years ago
4 0
X = 24

How?

First, plug in “27” to y.

3x - 2(27) = 18

Next, multiply the numbers

3x - 54 = 18

Now, add 54 to both sides.

3x = 18 + 54

Combine the like terms.

3x = 72

Finally, divide both sides by 3.

X = 24
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A rectangle has a length of (2c + 1) and a width of (3 + c). If c = 3, what is the area of the rectangle?
Varvara68 [4.7K]

Answer:

Area of a rectangle = 42 square units

Step-by-step explanation:

Area of a rectangle = length times width.

l = (2c + 1)  when c = 3, the length = 2 · 3 + 1 ; l = 6 + 1 = 7

w = (3 + c) when c = 3, the width = 3 + 3; w = 6

Area of a rectangle = length times width

Area of a rectangle = 7 · 6

Area of a rectangle = 42 square units

7 0
2 years ago
Matthew completed 5/8 of his workday. What decimal would also describe the portion of the workday he has finished? How can you u
Natalija [7]

Answer:

a)D= 0.625 Decimal that describes the portion of the workday he has finished

b)P= D*100= 0.625*100=62.5%

P: percentaje

D: Decimal

Step-by-step explanation:

Nomenclature

F: fraction of daily workday

D: decimal of daily workday

P: percentage of daily workday

Formulas

F= a/b

D= a÷b

P= D*100

Problem development

We have:

F = 5/8, then:

D= 5÷8= 0.625

To obtain the percentage of the workday that Matew has completed, we multiply the decimal x 100

P= 0.625*100=62.5%

6 0
4 years ago
Someone help please hurry !!! ASAP
geniusboy [140]

Answer:

it's -4

Step-by-step explanation:

hope it helped!!!!!!

7 0
3 years ago
Read 2 more answers
Theres 96 seats and 12 tables I just need an equation.
Citrus2011 [14]

Answer:

s = 8t

Step-by-step explanation:

.............................

3 0
3 years ago
3
Y_Kistochka [10]

Answer:

D) y = -1/2x + 4

Step-by-step explanation:

Points on the graph: (0, 4) and (8, 0)

Slope:

m=(y2-y1)/(x2-x1)

m=(0 - 4)/(8-0)

m= -4/8

m = -1/2

Slope-intercept:

y - y1 = m(x - x1)

y - 4 = -1/2(x - 0)

y - 4 = -1/2x

y = -1/2x + 4

8 0
3 years ago
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