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3 years ago

I need a complete answer for the entire thing (Please Help)

Mathematics

1 answer:

kari74 [83]3 years ago

4 0

Answer:

14 1/2

Step-by-step explanation:

Ok let's get started!

First things first...

Let's see what information we have!

Monday practice: 2 1/2 hours

Tuesday practice: 1 3/4 hours

Wednesday practice: 3 hours

First Step:

We need to put each fraction in improper form, so now it will look like this:

Monday practice: 5 / 2 hours

Tuesday practice: 7 / 4 hours

Wednesday practice: 12 / 4 hours

Now why did I put the Wednesday practice in terms of 4? Because we need to find a common denominator and that will be 4 so I made life easier and did it ahead of time!

Second Step:

We now need to put the Monday practice hours with a denominator of 4.

So we need to multiply the denominator by 4 and will do the same for the numerator so now we get:

5*2 / 2*2

Which is 10 / 4!

(hour)

Third Step:

Now we need to add a weeks worth of practice!

10 / 4 + 7 / 4 + 12 / 4 = 29 / 4

So, in a week Cory practices 29 / 4 hours, that's a lot!

Fourth Step:

Now we must find how much she does in 2 weeks. To do so we will do something a little more different then usual. We are going to put 29 / 4 in mixed number form. We will get 7 1/4.

Fifth Step:

Last step!

We will multiply 7 and 1/4 by 2,

7*2 and 1 / 4*2 =

14 and 2 / 4

Now we can still simplify 2 / 4 down to 1 / 2.

So our answer is.....

14 1/2

Sixth Step:

I lied there is one more step.....

REJOICE!!!!

We got through the math problem WHOOP! WHOOP!

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The endpoints of a diameter of a circle are A(1,2) and (7.10). Find the area of the circle in terms of pi

OLEGan [10]

Answer:

25pi

Step-by-step explanation:

To solve this, create a right triangle between the two points. We know the distance of one leg is 6, and the distance of the other leg is 8. Use the Pythagorean theorem to solve for the diameter. You substitute 6 and 8 into the values of A and B. Once you get this, you get (6^2)+(8^2)=c^2. Once you further simplify this, you get 36 + 64 = c^2, which is 100 = c^2. Take the square roots of both sides to get the diameter as 10. Divide the diameter by 2 to get the radius. Square the radius and multiply it by pi to get the area. Doing this will get the result of 25 pi.

7 0

3 years ago

- Write each expression as a multiple of a power of 10:

Rufina [12.5K]

Answer:

To write the following expressions as a multiple of a power of 10 you need to take each of the numbers and raise them to the power of 10.

An easy way to do this is to find the decimal point and move it over one spot to the right.

a. 0.04- move the decimal one to the right and you get that 0.04^10=00.4.

b. 0.072-move the decimal to the right one spot you get 0.072^10=00.72.

c. 0.0000325-move your decical to get 0.0000325^10=00.000325.

d. 0.003-move the decimal to get 0.003^10=00.03 or three hundredths.

e. 0.23-move your decimal to get 0.23^10=2.3 or two and three tenths.

f. 0.729-move you decimal to the right to get 0.729^10=07.29 or seven and twenty-nine hundredths.

g. 0.000041- move your decimal to the right to get 0.000041^10=00.00041 or forty-one hundred thousandths.

Hope this helps ;)

5 0

3 years ago

Plssssss help me!!!

Fofino [41]

Answer:

2h + 10

Step-by-step explanation:

The question gives one the height of Tree A (8h - 1) and the height of Tree B (6h - 11). The problem asks one to find how much taller Tree A is than Tree B. This problem can be modeled using a simple subtraction problem, the height of Tree A, minus the height of Tree B. Remember to distribute the subtraction sign outside of the parenthesis, and only combine like terms;

(Tree A) - (Tree B)

= (8h - 1) - (6h - 11)

= 8h - 1 - 6h + 11

= 2h + 10

Since there was no numerical value given for the variable (h), nor any value which this expression is equal, the final answer is (2h + 10).

3 0

3 years ago

What are the solutions to the equation<br><br>x^2+14x=-130<br><br>please do a step by step

Serjik [45]

Answer:

The answer to your question is: x1 = - 7 + 9i x2 = -7 - 9i

Step-by-step explanation:

x² + 14x = - 130

x² + 14x + (7)² = -130 + (7)²

(x + 7)² = -81

x + 7 = ± √-81

i² = -1, then x + 7 = ±√ 81i²

x + 7 = ± 9i

x1 = -7 + 9i x2 = -7 - 9i

5 0

4 years ago

IM GIVING BRAINLIEST AND 100 POINTS NO JOKE. PLEASE HELP

Sav [38]

Answer:

i hope this helps

Step-by-step explanation:

if you have 100 people in the room and you interviewed all of them, (for number 6). that means that 70% of these people ate breakfast

70% of the total amount of people you interviewed is 70. That means that 70 people you interviewed, eat breakfast.

Then it also says, "of those 70% of people, 25% eat cereal"

That means 25% of those 70 people eat cereal, or 1/4 of that population does.

0.25 * 70 = 17.5. (of course you cannot have part of a person, but this is an example)

and of the 17.5 people, 30% of them eats it with extra sugar.

so 30% of 17.5 people is 5.25.

that means that there are 5.25 people who eat cereal with extra sugar.

i hope this helps, it took a while for me to try to help with this

i noticed that you made a mistake. the amount of people that eat cereal is 25% of 70% of the people. that means you have to find 0.25 of 0.7 <--- (you multiply not divide)

(0.25x 0.7) = 0.175

4 0

3 years ago

Read 2 more answers

I need a complete answer for the entire thing (Please Help) ​

I need a complete answer for the entire thing (Please Help)