2 years ago

I don't know what to do.

Mathematics

1 answer:

mezya [45]2 years ago

7 0

Photo-math take a picture of your problem and it will give you your answer

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Vesnalui [34]

1)4x-7=2x+9
Subtract 2x
2x-7= 9
Add 7
2x=16
X= 8

2(8)+9=25
(8,25)

X+y=10
-X-2y=-14
-y= -4
Y=4
X+4=10
X=6
(6,4)

8 0

3 years ago

Which division expression is equivalent to 4 1/3 ÷ -5/6

Rzqust [24]

$4\dfrac{1}{3}\div\left(-\dfrac{5}{6}\right)\qquad(*)\\\\\text{Convert the mixed number to the improper fraction:}\\\\4\dfrac{1}{3}=\dfrac{4\cdot3+1}{3}=\dfrac{12+1}{3}=\dfrac{13}{3}\\\\(*)=\dfrac{13}{3}\div\left(-\dfrac{5}{6}\right)\\\\\text{By dividing by a fraction, we multiply by its reciprocal.}\\\\=\dfrac{13}{3}\cdot\left(-\dfrac{6}{5}\right)\qquad\text{simplify}\\\\=\dfrac{13}{3\!\!\!\!\diagup_1}\cdot\left(-\dfrac{6\!\!\!\!\diagup^2}{5}\right)=-\dfrac{13\cdot2}{1\cdot5}=-\dfrac{26}{5}=-\dfrac{25+1}{5}=-5\dfrac{1}{5}$

5 0

3 years ago

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Simplify 3^8 x 3^4 / 3^2 x 3^8 leaving your answer in index form

Furkat [3]

Answer:

3² or 9

Step-by-step explanation:

Step 1: Add exponents

$\frac{3^{12}}{3^{10}}$

Step 2: Subtract exponents

You should get 3² because of exponent rules. Remember when you multiply exponents you add the powers and when you divide exponents you subtract the powers.

3 0

2 years ago

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A property sells for $620,000 two years after it was purchased. If the annual appreciation rate was 4%, how much did the origina

8090 [49]

$25,000 is the answer you would take $620,000 x 0.04 (4%)= 24,800 which rounds to 25,000

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3 years ago

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Can someone help me for 20 points please? Thanks, make sure it is correct!

zzz [600]

Yes what do you need help with

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3 years ago