3 years ago

Solve the exponential equation: 73 – 2x = 7–x

Mathematics

1 answer:

tigry1 [53]3 years ago

4 0

I don't think any of them are the answer.

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Twelve more than half of a number is equal to the number

tester [92]

Let's consider that number to be 'x'..
So, twice the number (2x) is 12 greater than than the half of the number.
So the equation will be like,
2x=12+x/2
Solving this further,
2x=(24+x)/2
=> 4x=24+x
=>4x-x=24
=>3x=24
=>x=8..
So the number is "8".

5 0

3 years ago

Please help! Will mark brainliest! 20 points!

notsponge [240]

8 3

9 4

Get common denominators.

8(4) 3 (9)

9(4) 4 (9)

32 27

36 36

5/36

5 0

3 years ago

Ms. Velez will use both x gray bricks and y red bricks to build a wall around her garden. Gray bricks cost $0.45 each and red br

Finger [1]

Let

x--------> the number of gray bricks

y--------> the number of red bricks

we know that

$y < \frac{x}{2}$ ------> inequality 1

$0.45x+0.58y \leq 200$ <em>-----> </em>inequality 2

therefore

<u>the answer is</u>

x > 0

0.45x+0.58y≤200

6 0

3 years ago

Write the expression as a polynomial (x+1)(x+2)(y–3)

o-na [289]

$\text{Use FOIL method:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(x+1)(x+2)(y-3)=[(x)(x)+(x)(2)+(1)(x)+(1)(2)](y-3)\\\\=(x^2+2x+x+2)(y-3)=(x^2+3x+2)(y-3)\\\\=(x^2)(y)+(x^2)(-3)+(3x)(y)+(3x)(-3)+(2)(y)+(2)(-3)\\\\=\boxed{x^2y-3x^2+3xy-9x+2y-6}$

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3 years ago

(my sister needs help with this) Mark and Chris had an equal number of chocolate bars. Mark ate 1/5 of his chocolate bars. Chris

V125BC [204]

Answer:

Mark!

Step-by-step explanation:

say you have 20 cookies, Mark ate on fifth so that would be 4, bringing him with 16 left

Chris ate 1/4 which would be 5, he would have 15 left

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3 years ago