MATHEMATICS HIGH SCHOOL

How do you do this problem?
Solve by factoring or finding square roots.
x^2-1=0

Answers

Answer 1
Answer: use formula^:   a²-b²= (a-b)(a+b)
x²-1=0
x²-1²=0
(x-1)(x+1)=0
x-1=0⇒ x₁=-1
x+1=0 ⇒x₂=1
Answer: x=+-1
Answer 2
Answer: x² - 1 = 0
   + 1  + 1
      x² = 1
       x = +1

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An empty bucket is placed under a faucet dripping at a constant rate of 4 milliliters per minute. With the given information, which of these statements is a reasonable conclusion? There will be 24 milliliters of water in the bucket after 16 hour. There will be 60 milliliters of water in the bucket after 14 hour. There will be 160 milliliters of water in the bucket after 20 minutes. There will be 100 milliliters of water in the bucket after 40 minutes.
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When do you line up decimals

Answers

For example u have number like 2.085+34.567 u need to line up decimals so u do 02.085 34.567 I hope this might helps u=)

Simplity. (2+7) / (7/2 x 2)

Answers

Answer: 9/7 or 1.28571 or 1 2/7

Three ways to simplify :)

Step-by-step explanation:

Use PEMDAS to help simplify

(2+7) becomes 9

(7/2 x 2) becomes 7

Simplified, it's 9/7, which is equivalent to 1.28571

Fatima has saved $15,000 toward a down payment on a house. She makes $5,375 a month. What is the maximum loan she can take on a house?Don't you take the $5,375 a month, multiply it by 12, then multiply that answer by 2?
$5,375 x 12 = $64,500 x 2 = $129,000

Answers

Answer:

just use this formula and plug in your numbers from the question.

Maximum Loan for a house= $129,000

monthly pay * 12. So $5,375*12=$64,000.

$64,000*2=$129,000.

Maximum spent on a House=$144,000

$129,000+ $15,000= $144,000

Step-by-step explanation:

Rule from the lesson:

Maximum loan for a House = 2(Annual Gross pay) , that is 2*your annual gross pay.

Maximum spent on a House= Maximum Loan + Down Payment
If you want to find the loan for 2 years then you are right.Moreover in most of the cases you need t pay the interest too.But in this cases interest rate is not mentioned.

How do you solve (-4×6)+8÷-2

Answers

PEMDAS
parenthasees first
exponents
mulitplication or division
additon or subtraction

read from leaft to right

paretnahseese
(-4 times 6)
negative tiems positive=negative
-4 tiems 6=-24

now we have
-24+8/-2
division
8/-2
positive divided by negative=negative8/-2=-4

now we have
-24-4
add
-24-4=-28

answer is -28

The ratio of the number of boys to the number of girls in a choir is 5 to 4. There are 60 girls in the choir. How many boys are in the choir?

Answers

Answer:

There are 48 boys in the choir

Step-by-step explanation:

There are ten questions on Jack's science quiz: six multiple choice questions with four choices each and four true/false questions. How many ways can he answer the question?

Answers

Questions with multiple choice can be answered: 4^6 = 4096 ways
True/false questions can be answered: 2^4 = 16 ways

The total number of ways to answer all questions = 4096*16 =65,536 ways
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