Solve 2 cube root 8x+9=5

Answers

Answer 1

Answer: 2 times the cube root of 8x+9=5
divide both sides by 2
cube root of 8x+9=2.5
cube everybody (put to 3rd power)
8x+9=2.5^3
8x+9=15.625
minus 9 both sides
8x=6.625
divie both sides by 8
x=0.828125

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How can you use the metric prefixes milli-,centi-, and kilo- to help you decide if a metric conversion is reasonable?

Answers

milli centi and kilo each has a meaning: milli means one thousandth of, centi means one hundredth of, and kilo means one thousand of. So just use the meanings to see if the conversion is correct.

Which function has the smallest x-intercept value, if it exists?

Answers

Answer:

x intercept. The x intercept is the point where the line crosses the x axis. At this point y = 0. y intercept. The y intercept is the point where the line crosses the y axis.

Answer:

f(x)=x+1 or C on edge

Step-by-step explanation:

Allie answered 72% of the questions on her math test correctly. If she answered 18 questions correctly, how many questions were on the test?

Answers

Answer:

25 questions

Step-by-step explanation:

The answer to this question can be solved by setting up a proportion, or equivalent ratios (fractions). Since we know that 18 questions was equal to 72% correct on the test, we can set up a proportion to find the total number of questions:

$(72)/(100)=(18)/(x)$ , where 'x' represents the total number of questions (or 100%) of the questions on the test.

Cross-multiply and divide: 72x = 18(100) or 72x = 1800

Divide both sides by 72: 72x/72 = 1800/72

Solve for x: x = 25 questions

Estimate the solution to the system of equations.
2x+3y=6
-4x+3y=12

Answers

The solution is:

$x=-1, y=2(2)/(3)$

Step-by-step explanation:

Given

2x+3y=6 Eqn 1

-4x+3y=12 Eqn 2

Subtracting equation 2 from equation 1

$2x+3y-(-4x+3y)=6-12\n2x+3y+4x-3y=-6\n6x=-6\nDividing\ both\ sides\ by\ -6\n(6x)/(6)=(-6)/(6)\nx=-1$

Putting x=-1 in equation 1

$2x+3y=6\n2(-1)+3y=6\n-2+3y=6\n3y=6+2\n3y=8\nDividing\ both\ sides\ by\ 3\n(3y)/(3)=(8)/(3)\ny=2(2)/(3)$

The solution is:

$x=-1, y=2(2)/(3)$

Keywords: Linear equations

Learn more about linear equations at:

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What is 1. 6/7 divided by 2/7. 2. 4/5 divided by 2/5. 3. 4/7 divided by 2. And 4. 12/13 divided by 3

Answers

1. 6/7÷2/7 = 3

2. 4/5÷2/5 = 2

3. 4/7÷2 = 2/7

4. 12/13÷3 = 4/13

HOPE THIS HELPS!!!!!!!!!!!

Graph the line using a point and a slope. Write the equation of each line. b a line that passes through the point (4, 0) and whose slope is 0.5. PLEASE GRAPH THE LINE ALONG WITH THE ANSWER! THANK YOU SO MUCH! I am giving ten points, to whoever who does so.