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Igoryamba
3 years ago
11

How to solve 2x+5 if x equals 7

Mathematics
1 answer:
tatuchka [14]3 years ago
6 0

Answer:

2(7) + 5 = 19

Step-by-step explanation:

Okay, so do it like this:

2x+5

x = 7

2(7) + 5

2(7) = 2 x 7

2 x 7 = 14

Now it's 14 + 5

14 + 5 = 19

Your answer is 2(7) + 5 = 19

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Arely has 4 fewer than twice as many music files as Valerie. They have a combined number of 86 music files. Which is the number
tankabanditka [31]

Answer:

56 music files

Step-by-step explanation:

From the above question:

Let the number of music files

Arely has = x

Valerie has = y

Arely has 4 fewer than twice as many music files as Valerie.

x = 2y - 4

They have a combined number of 86 music files.

x + y = 86

We substitute 2y - 4 for x in the above equation

2y - 4 + y = 86

3y - 4 = 86

3y = 86 + 4

3y = 90

Divide both sides by 3

3y/3 = 90/3

y = 30

Hence, Valerie has 30 music files.

The number of music files that Arely has is calculated as:

x = 2y - 4

x = 2(30) - 4

x = 60 - 4

x = 56

Arely has 56 music files

8 0
3 years ago
What is the volume of the cube shown?
SOVA2 [1]
The answer is the last one.
5 0
3 years ago
Read 2 more answers
What is the ideal mechanical advantage?
Rufina [12.5K]
It would be 3.5 good job
5 0
3 years ago
If a line segment is perpendicular to another line segment, it is the bisector of that line segment.
sp2606 [1]

False. Perpendicular lines run beside each other not through each other.

7 0
4 years ago
Mila built a wooden toy bin with a lid to sell in her store. The bin is shaped like a rectangular prism and measures 2 feet long
charle [14.2K]

The rectangular prism having a length of 1 feet, width of 2 feet and that

is 1 feet deep, gives the area Mila stained as<u> 8 square feet</u>.

<h3>How can the area that Mila stained be found?</h3>

The given dimensions of the rectangular prism bin are;

Length of the bin = 2 foot

Width of the bin = 1 feet

Depth of the bin = 2 feet

Required:

The surface area of the rectangular prism bin.

Solution:

The surface area, S. A., of the rectangular prism bin is given as follows;

S. A. = Length × Width + Depth × Width + Length × Depth

Which gives;

S. A. = 2 × 1 + 2 × 1 + 2 × 2 = 8

  • The surface of area Mila stained, S. A. =<u> 8 ft.²</u>

Learn more about surface area of a rectangular prism here:

brainly.com/question/987829

3 0
2 years ago
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