Solve each equation by factoring, PLZ HELP!!

Answers

Answer 1

Answer: 1) x^2=64 is the same as x=the root of 64 which gives us: (+-)8

2) here you must us pq-formel as:

5m^2-5m=60

5m^2-5m-60=0

(m^2-5m-60)/5=0

m^2-m-12=0

m=0,5(+-) the root of 0,25+12

m=0,5(+-)3,5

m1=0,5+3,5

m2=0,5-3,5

15) x^2=7x

x^2-7x=0 here there is two x, so:

x(x-7)=0

x1=0

x2=7

Here you can only use PQ formula in all the others, just as I did in the question number 2

Related Questions

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What is sin 7pie/4the answer does not have pie in it and it is not a decimal
What is the 13th term of this arithmetic sequence? 132, 135, 138, 141,
What is the length and width of a rectangle with a perimeter of 54
Stephen does not like yogurt very much, but he loves apples. Since both make a good snack, Stephen’s mom makes a deal with Stephen. She will keep the refrigerator stocked with 5 yogurts, 2 green apples, and 3 red apples every day. Each day, Stephen will randomly pick a snack. What is the probability Stephen will not get three yogurts on three consecutive days? Use a tree diagram or area model to show all the possible outcomes in the sample space.

What is the circle graph of x squared plus y squared equals 13?

Answers

The radius is surd 3, hence graph that, where every radius is surd 3

sorry answered the wrong question!!!!

Caroline bought 20 shares of stock at 101/2, and after 10 months the value of the stocks was 111/4. If Caroline were to sell all her shares of this stock, how much profit would she make? A. $10 B. $15 C. $225 D. $210

Answers

Answer:

$15 profit would Caroline make .

Option (B) is correct .

Step-by-step explanation:

As given

$Caroline\ bought\ 20\ shares\ of\ stock\ at\ 10 (1)/(2).$

i.e

$Caroline\ bought\ 20\ shares\ of\ stock\ at\ (21)/(2).$

$After\ 10\ months\ the\ value\ of\ the\ stocks\ was\ 11 (1)/(4).$

i.e

$After\ 10\ months\ the\ value\ of\ the\ stocks\ was\ (45)/(4).$

Thus

Profit = (Cost of the 20 stock after 10 month - Cost of the 20 stock before 10 month ) × Total number of shares .

$Profit = ((45)/(4) - (21)/(2))* 20$

L.C.M of (4,2) = 4

$Profit = (45 - 21* 2)/(4)* 20$

$Profit = (45 - 42)/(4)* 20$

$Profit = (3)/(4)* 20$

Profit = 3 × 5

Profit = $15

Therefore the $15 profit would Caroline make .

Option (B) is correct .

Your answer will be $15.

Convert 72°F to °C (to the nearest tenth) using one of the following formulas: F = 9/5xC + 32 or C = (F - 32) x 5/9.

Answers

If you would like to convert 72°F to °C using one of the following formulas, you can do this using the following steps:

C = (F - 32) * 5/9
C = (72 - 32) * 5/9
C = 40 * 5/9
C = 22.2°C

The correct result would be 22.2°C.

First set up the equation:
$C=(F-32)*(5)/(9)$
Then substitute in known values:
$C=(72-32)*(5)/(9)$
and solve for C
$C=40*(5)/(9)$
$C=22.22$

Math Help

Explain when is a rational expression restricted.

Answers

basically, domain is all real numbers that cause an not allowed
some things that aren't allowed are dividing by zero and taking the square root of a number less than zero, restrict all values that make thos things hapen

exapmle

a/b, b can not be zero

(3+x)/(4-x)
x cannot be 4 since that would be dividing by zero

another example
√(x-3)
x cannot be less than 3 because that would make a sqrt of a negative

basiccally restrictions are not allowed becasue we don't understnad what happens when we break them

All of the following points lie on the graph of y = 2 xexcept _____.(0, 0)
(1, 2)
(2, 4)
(3, 8)

Answers

We have a line;
y=2x
Now , we find out with points belong to this line.
(0,0); it means: x=0 and y=0
y=2*0=0; therefore this point lie on the graph of y=2x.

(1,2); it means: x=1 and y=2.
y=2*1=2; therefore this point lie on the graph of y=2x.

(2,4), it means: x=2 and y=4.
y=2*2=4; therefore this point lie on the graph of y=2x

(3,8), it means: x=3 and y=8.
y=2*3=6≠8. Therefore thispoint doesn´t lie on the graph of y=2x.

Answer: All of the following points lie on the graph of y=2x, excpet (3,8).

Rory walks a combined 7/8 of a mile to school and back each day. How many miles does he walk each way?

Answers

Whats half of 7/8?
1/2*7/8= 7/16 of a mile

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Need help with middle two questions... I’ll give points

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Find the new price for the markdown. Round to the nearest cent if necessary. $12.99 marked down 25%

Which can be represented by the expression 17 – 2x?