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3 years ago

When i triple my number and subtract 7 i get 83

Mathematics

2 answers:

nignag [31]3 years ago

3 0

The number is 30 because 30 multiplied by 3 is 90 and 90 -7 is 83

Hitman42 [59]3 years ago

3 0

30 because 30 X 3 = 90 - 7 = 83

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Solve each equation. Show all work necessary to justify your answer

ivanzaharov [21]

THIS IS EASY. I don't have a calculator on me so bare with me.

1.) 7x - 9 = -4x + 90
7x +9. = -4x. + 9
7x. = -4x. 99
+4x = +4x. + 99
11× = 99
÷ 11. ÷ 11
X = 9

U can solve the rest. Are you serious?

4 0

3 years ago

3(x+1)^(4/3)=48<br><br> how do i solve this?

IrinaK [193]

$3(x+1)^{\frac{4}{3}}=48\\\\\frac{3(x+1)^{\frac{4}{3}}}{3}=\frac{48}{3}\\\\(x+1)^{\frac{4}{3}}=(x+1)^{(\frac{1}{3}*4)}=\sqrt[3]{(x+1)^{4}}=16\\\\(\sqrt[3]{(x+1)^{4}})^{3}=16^{3}\\\\(x+1)^4=4096\\\\\sqrt[4]{(x+1)^4}=\sqrt[4]{4096}=\pm8\\\\\\x+1=\pm8\\\\x+1=8\\x=7\\\\x+1=-8\\x=-9$

Your answers are x = 7 and x = -9.

4 0

3 years ago

Is 500 inches greater than or less than 40 feet?

frozen [14]

Convert 40 feet to inches. 40 x 12 = 480 inches. So 500 inches is greater than 40 feet.

8 0

3 years ago

A local amusement park charges $21.50 per daily adult ticket and $14.75 per daily child's ticket. A group of 12 people paid $204

ivanzaharov [21]

Answer:

Step-by-step explanation:

Even though you didn't provide options from which to choose, you don't need them to figure out the system. We need an equation that involves the NUMBER of people and then we need an equation that involves the MONEY earned. Two different things here.

As for the number of people, we know that the number of adult tickets + the number of children = 12 people, so

x + y = 12.

That's the first equation. Now for the money:

21.50x + 14.75y = 204.00

That's your system.

8 0

3 years ago

Read 2 more answers

Is 40% of 90 closer to 10 or 30?

shtirl [24]

Answer:

Closer to 30.

Step-by-step explanation:

To answer this first find 40% of 90.

90*0.4=36

0.4 is the same as 40%

Hope this helps!

If not, I am sorry.

4 0

3 years ago