All categories

3 years ago

Help me solve 3/4x=18-1/2x

Mathematics

1 answer:

expeople1 [14]3 years ago

8 0

I hope this helps you

You might be interested in

Write a system of equations and solve. Three times the first number minus two times the second number equals -7. The second numb

Fynjy0 [20]

Answer:

-1 and 2

Step-by-step explanation:

Let the numbers be x and y

Three times the first number minus two times the second number equals -7:

3x - 2y = -7

The second number equals one less than negative three times the first number:

y = -3x - 1

Substitute y in the first equation and solve for x:

3x - 2(-3x - 1) = -7
3x + 6x + 2 = -7
9x = -9
x = -1

Find the value of y:

y = -3(-1) - 1
y = 3 - 1
y = 2

The numbers are -1 and 2

8 0

3 years ago

Answer and explain how you gotttt it please

sesenic [268]

Answer:

x= 17

Step-by-step explanation:

5x-7=3x+27

move 3x to other side by doing the oppostie (subtracting 3x)

5x-7-3x=27

2x-7=27

move -7 to other side by adding it (to the other side)

2x= 7+27

2x= 34

divide by 2 (on both sides) to get x by itself

2x/2=34/2

x= 17

4 0

3 years ago

Evaluate the expression 1/4 x (3/9 + 5) Choices:1 1/3,1 2/3,5,answer not here.

Luda [366]

Answer:

First option

Step-by-step explanation:

Given the following equation:

$\frac{1}{4} \times(\frac{3}{9} +5)$

In order to find the answer, we solve the equation in between the parenthesis according to order of operations and then multiply that answer by 1/4.

$\frac{1}{4} \times(\frac{3}{9} +5)$
$5=\frac{5}{1}$
$\frac{3}{9} +\frac{5}{1}$
$3\times1=3$
$9\times1=9$
$5\times9=45$
$1\times9=9$
$\frac{3}{9} +\frac{45}{9}$
$3+45=48=\frac{48}{9}$
$\frac{48}{9} \div3=\frac{16}{3}$

$\frac{1}{4} \times\frac{16}{3}$
$1\times16=16$
$4\times3=12$
$\frac{16}{12} \div2=\frac{8}{6} \div2=\frac{4}{3}$
$\frac{4}{3} =4\div3=1\frac{1}{3}$
$=1\frac{1}{3}$

Hope this helps.

3 0

2 years ago

How do you use congruence and similarity criteria to solve problems in geometric figures?

Zolol [24]

Answer: We are given that, between the triangles, two pairs of corresponding sides are proportional, and that a pair of corresponding angles are congruent. The angles that are congruent are the included angles of their respective sides. By the SAS Similarity Postulate, this is enough to prove that .

Step-by-step explanation:

8 0

4 years ago

3) You paid $5 for a bucket of popcorn and $1.25 per candy bar. How many candy bars

Alex73 [517]

4 dollars flat $4.00

Step-by-step explanation:

1.25x4= 5$ 5$+5$=10$

4 0

4 years ago

Read 2 more answers