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Otrada [13]
3 years ago
15

I need help with #28-31 please

Mathematics
1 answer:
Aliun [14]3 years ago
6 0
(28) 2x+10+x-4=21
(29) 3x-16+4x-8=60
(30) 2x-8+3x-10=17
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Please help marked brainliest if correct.
solmaris [256]

Answer: Michael is 72.

hope this helps

Step-by-step explanation:

Let Brandon be b. Then Michael is 3g.

3g-18=9(b-18)

3g-18=9g-162

6g=144

b=24

3g=72

5 0
3 years ago
Solve: x/x+2 + 5/x-3 = 25/x2-x-6
Paraphin [41]

Answer:

x1=3  x2=-5

BUT x1=3 is not an answer because it doesnt respects the range on the original ecuation, so x2=-5 is the solution

Step-by-step explanation:

6 0
2 years ago
Finding the area of a circle with a diameter of 6ft. Use the formula A=<br> πr2.<br> HELP!!!
mylen [45]

Answer:

Step-by-step explanation:

If diameter is 6 then the radius is half of that or 3.

A = pi * r^2

A = pi * 3^2

A = 9pi ft^2

7 0
3 years ago
What is the simplified form of the following expression? Assume y=0 ^3 sqrt 12x^2/16y
pochemuha

For this case we must simplify the following expression:

\sqrt [3] {\frac {12x ^ 2} {16y}}

We rewrite the expression as:

\sqrt[3]{\frac{4(3x^2)}{4(4y)}}=\\\sqrt[3]{\frac{4(3x^2)}{4(4y)}}=\\\frac{\sqrt[3]{3x^2}}{\sqrt[3]{4y}}=

We multiply the numerator and denominator by:

(\sqrt[3]{4y})^2:\\\frac{\sqrt[3]{3x^2}*(\sqrt[3]{4y})^2}{\sqrt[3]{4y}*(\sqrt[3]{4y})^2}=

We use the rule of powera ^ n * a ^ m = a ^ {n + m} in the denominator:

\frac{\sqrt[3]{3x^2}*(\sqrt[3]{4y})^2}{(\sqrt[3]{4y})^3}=\\\frac{\sqrt[3]{3x^2}*(\sqrt[3]{4y})^2}{4y}=

Move the exponent within the radical:

\frac{\sqrt[3]{3x^2}*(\sqrt[3]{16y^2}}{4y}=\\\frac{\sqrt[3]{3x^2}*(\sqrt[3]{2^3*(2y^2)}}{4y}=

\frac{2\sqrt[3]{3x^2}*(\sqrt[3]{(2y^2)}}{4y}=\\\frac{2\sqrt[3]{6x^2*y^2}}{4y}=

\frac{\sqrt[3]{6x^2*y^2}}{2y}

Answer:

\frac{\sqrt[3]{6x^2*y^2}}{2y}

7 0
3 years ago
Read 2 more answers
This year, a small business had a total revenue of $72,900. If this is 35% more than their total revenue the previous year, what
ziro4ka [17]

Answer:

Therefore there revenue was $540,000.

Step-by-step explanation:

Let their total revenue last year be x

so

35% of x = $72,9000 - x

or, 35/100 × x = 729000 - x

or, 7x/20 = 729000-x

or, 7x = 20(729000-x)

or, 7x = 1458000- 20x

or, 7x + 20x = 14580000

or, 27x = 14580000

or, x = 14580000/27

so, x = $540,000

4 0
3 years ago
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