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2 years ago

Solve 3x - 5 + x = 31.

Mathematics

2 answers:

Sergio039 [100]2 years ago

8 0

Answer:

x=9

Step-by-step explanation:3x-5+x=31

3x+x=31+5

4x=36

x=36/4

x=9

Kaylis [27]2 years ago

6 0

Hey there!

• ORIGINAL EQUATION
3x - 5 + x = 31

• Conversion
3x - 5 + 1x = 31

• COMBINE the LIKE TERMS
4x - 5 = 31

• ADD 5 to BOTH SIDES
4x - 5 + 5 = 31 + 5
‣ CANCEL out: -5 + 5 because it give you 1
‣ KEEP: 31 + 5 because it help solve for the x-value

• NEW EQUATION
4x = 31 + 5

• SIMPLIFY IT!

4x = 36

• DIVIDE 4 to BOTH SIDES
4x/4 = 36/4
‣ CANCEL out: 4/4 because it give you 1
‣ KEEP: 36/4 because it help solve for the x-value

• NEW EQUATION
x = 36/4

• SIMPLIFY IT!

x = 9

Therefore, your answer is: x = 9

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

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2. A restaurant employs five people. The two cooks work 36 hours

Cloud [144]

Answer:

Total amount = R5112

Step-by-step explanation:

Let the cooks be C.

Let the waiters be W.

Given the following data;

Number of cooks, C = 2

Number of waiters, W = 3

a. To find the amount earned by each cook;

C = 36 * R36 = R1296

b. To find the amount earned by each waiter;

W = 30 * R28 = R840

c. To find the total amount earned by the employees;

Total amount = 2C + 3W

Total amount = 2(1296) + 3(840)

Total amount = 2592 + 2520

Total amount = R5112

4 0

3 years ago

The length of a rectangle is x feet. Its width is (x-7) feet. Draw and label a rectangle to represent this situation. Then write

a_sh-v [17]

Answer:

Perimeter of rectangle:

$(4x - 14)\text{ feet}$

Step-by-step explanation:

We are given the following in the question:

Length of rectangle:

$x\text{ feet}$

Width of rectangle:

$(x-7)\text{ feet}$

Perimeter of rectangle:

$2\times \text{(Length + Width)}$

Expressions to calculate perimeter

$1. ~2((x) + (x - 7))\text{ feet}\\2.~2(2x-7)\text{ feet}\\3.~ 4x-14\text{ feet}$

The attached image shows the image of the rectangle.

3 0

3 years ago

Q # 4 anybody help me please

Marysya12 [62]

<u>Answer</u>

-5/3, -1, 0.7, √2, √5

<u>Explanation</u>

√5 = 2.236

-1 ⇒ this is less than 1.

-5/3 = -1.666667 this is less than 1. -5/3 < -1

0.7 > -1

√2 = 1.414 ⇒ √5 > √2

Arranging them from the least to the greatest;

-5/3, -1, 0.7, √2, √5

8 0

3 years ago

A group spends $277.50 to rent a total of 15 tubes. How many of each type of tube does the group rent?

tensa zangetsu [6.8K]

The amount spent on each tube is $18.5

The total amount spent to rent 15 tubes by the group is $277.50.

Since they did not specify in the question the types of tubes they rented, we cannot determine each types of tubes that the group rented but we can determine the amount spent on each tube provided that they are all the same types.

∴

if 15 tubes = $277.50

1 tube = $x

By cross multiplying:

$\mathbf {\$(x) = \dfrac{ \$277.50 \times 1 \ tube }{15 \ tube}}$