MATHEMATICS HIGH SCHOOL

4. Solve the quadratic by factoring, isolating x^2, or using the quadratic formula:a. 2x^2 – 7x = 4

b. 81x^4 – 1


c. 2x^2 – 32 = 0

d. X^2 – 7x + 12

Answers

Answer 1
Answer: Hello,

A:
2x²-7x-4=0
==>2x²-8x+x-4=0
==>2x(x-4)+1(x-4)=0
==>(x-4)(2x+1)=0
==>(x=4) or (x=-1/2)

B: where is the sign "=" !!!!!!!!!!!!!!!!!!

81x^-1=(9x²+1)(3x+1)(3x-1) I can not go any further.


C)
2x²-32=0
==>x²-16=0
==>(x+4)(x-4)0
==>x=-4 or x=4

D:
where is the sign "="!!!!!!!!!!!!!!!!!!!!!!!!

x^2-7x+12=(x-4)(x-3) but I can not go ant further....

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Jorge wants to write 4/5 as a sum of unit fractions.

Answers

Unit fractions are fractions whose numerators are 1 and whose denominators are positive integers.

4/5 written as a sum of unit fractions is:

1/5 + 1/5 + 1/5 + 1/5 = 4/5

Please help me ASAP. Many Thanks

Answers

you have to make the fraction into an integer. the simplest version of a ratio involves the smallest possible integers. therefore, 5:2.5 will equal 10:5 (you multiply both sides by 2). 10:5 cancels down to 2:1. hope this helped :)

Solve for the variable in 7 ∕28 = 25∕ x A. 20 B. 100 C. 4 D. 5

Answers

The solution to the equation 7/28 = 25/x is x = 100.

What is the solution to the equation?

Given the equation in the question:

7/28 = 25/x

To solve for the variable x in the equation 7/28 = 25/x, first, we cross multiply.

7/28 = 25/x

Cross-multiplying, i.e multiplying the numerator of the first fraction with the denominator of the second fraction and vice versa:

Hence:

7 × x = 28 × 25

7x = 700

Now, isolate x by dividing both sides by 7:

7x/7 = 700/7

x = 700/7

x = 100

Therefore, x has a value of 100.

Option B) 100 is the correct answer.

Learn more about equations here: brainly.com/question/14686792

#SPJ6
(7)/(28)=25 over x 

OK what can go in to 25? 

5

25/5=5/25/7/28/x=5
X= 5

What is the slope of a line through (-5, -10) and (-1, 5)

Answers

Answer:

m = 15/4

Step-by-step explanation:

slope (m) = (y₂ - y₁)/(x₂ - x₁)

Let:

(x₁ , y₁) = (-5 , -10)

(x₂ , y₂) = (-1 , 5)

Plug in the corresponding numbers to the corresponding variables:

m = (5 - (-10))/(-1 - (-5))

m = (5 + 10)/(-1 + 5)

m = (15)/(4)

m = 15/4 is your answer.

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Paloma volunteered to dean up litter along the sidewalkin front of her home for a total of 24 hours. If it took
30 minutes to walk that section of sidewalk, and she
walked it daily and picked up all the litter she saw,
how many days would she need to work to complete
her 24 hours of volunteer time?
PLEASE SHOW WORK BECAUSE I HAVE TO WRITE IT DOWN!!!!! 15 POINTS IF U DO!!!

Answers

30 mins / day = 1 hr / 2 days

24 hrs * 2 days = 48 days

It would take Paloma 48 days to complete the 24 volunteer hours

A caterer prepared a turkey that weighed 27 1/2 pounds. Each serving of turkey will be 1/3 pound. How many whole servings will the turkey provide?

Answers

Answer:

The answer is 82

Step-by-step explanation:

Answer:

82.5000001 Close to around this ( maybe .11 off)

Explanation:

27.5 ÷ .33333333 = 82.5000001
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