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3 years ago

Simplify: 7x2 - 31x2-11)

Mathematics

1 answer:

jek_recluse [69]3 years ago

3 0

The solution is -59

First you multiply the numbers witch will give you

14 - 62 -11

Then you subtract it all and get -59

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Giving Out Brainliest<br><br> Answer Asap<br><br> thx

solong [7]

Answer
4x+2=7x-25
27=3x
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3 years ago

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Solve for x.

S_A_V [24]

Answer:

x = {-2, 2/3}

Step-by-step explanation:

2x = -4

x = -2

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x = 2/3

x = {-2, 2/3}

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3 years ago

Is 1.75 less or greater than 1 1/2

julsineya [31]

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Greater 1 1/2 is 1.50

Step-by-step explanation:

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3 years ago

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The cost of 7 chairs and 2 tables is equal.If the cost of 6 chairs and 5 tables is 10575, find the cost of 12 chairs.

Igoryamba

Answer:

5400

Step-by-step explanation:

Let x represent the cost of a chair and y represent the cost of a table. We can use this to set up a system of equations:

7x=2y

6x+5y=10575

We can solve this system using substitution.

Start by rewriting the first equation in terms of x.

$7x=2y\\\text{Divide both sides by 7}\\x=\frac{2}{7}y$

Substitute this into the second equation:

$6(\frac{2}{7}y)+5y=10575\\\frac{12}{7}y+5y+10575\\\frac{12}{7}y+\frac{35}{7}y=10575\\\frac{47}{7}y=10575$

Multiply both sides by 7

$47y=74025$

Divide both sides by 47

$y=1575$

This means...

$7x=2(1575)\\7x=3150$

Divide both sides by 7

$x=450$

One chair costs 450. Now, multiply this number by 12 to find the cost of 12 chairs.

$450*12=5400$

12 chairs cost 5400.

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2 years ago

if the volume of a storage room is 24 cubic feet its length is 3 feet and its width is 2 feet what is the height

viva [34]

Answer:

Step-by-step explanation:

V = L*w*h

L = 3

w = 2

h = ?

V = 24

24 = 2*3 * h Combine the right

24 = 6* h Divide both sides by 6

24/6 = 6h/6

4 = h

6 0

2 years ago