Mathematics High School

What is the solution set of the equation x2 + 2x − 15 = 0?

Answers

Answer 1

Answer:

x= 5,-3

Step-by-step explanation:

Answer 2

Answer:

x= 3, -5

hope this helps

Related Questions

What is the image point of (2,0) after the transformation rx-axis o T1,-1?



Answers

Answer:

-2,0

Step-by-step explanation:

Answer:3,1

Step-by-step explanation:

7.4.5 practice problems math 7th grade

Answers

Did you post what you need help on? I can’t see it

helppppppppppppppppp

Answers

Answer:

what u need help with ?????

the percent discount is 20%

Geometry - more triangle proofs​

Answers

Answer:

because SAS , NYC , PAC all are together

Step-by-step explanation:

The given statement in the question is SAS.

We are given that;

Trapezoid NYAP

Now,

Two triangles are said to be congruent if the length of the sides is equal, a measure of the angles are equal and they can be superimposed.

One possible given statement is that ∠NYC = ∠PAC.

This is because the base angles of an isosceles trapezoid are congruent. Since C is the midpoint of YA,

we know that YC = CA by the definition of midpoint.

Also, NC = CP is given.

by SAS, we can conclude that △NYC ≅ △PAC.

Therefore, by congruent triangles the answer will be SAS.

Learn more about congruent triangles;

https://brainly.com/question/12413243

#SPJ4

PLEASE HELP!! PLEASE PUT HOW TO DO IT ASWELL!!

Answers

Answer:

4%

Step-by-step explanation:

1.   Subtract: 55 - 52.8 = 2.2

2.   Divide: 2.2/55 = 0.04

3.   Multiply: 0.04 x 100 = 4

Prompt:
In unit 5 we have been talking about polynomials and their degree. Mr. McGill thinks the degree of this polynomial is 2 because it is the exponent in front. What mistake did Mr. McGill make and what should the correct answer be?

x2−6x12−4x+8

Answers

Answer:

degree of the polynomial should be 12

Step-by-step explanation:

The mistake he did was that he was supposed to consider the highest power

The power of the term in front should

not be used if the term does not have the highest power

As we can see. the term with the highest power is 12

So we can say that the degree is 12 and not 2

Sam and his friend are working at the body shop. Sam can do the work in 7hours. When his friend is helping him they do the same work in 4 hours. How long does it take Sam's friend to do this work alone?

Answers

Answer:

28/3

Step-by-step explanation:

because 1/7+x=1/4

x=3/28

recipricol of 3/28=28/3

28/3

please help me please will give brainliest ​

Answers

it’s gotta be c
............

Answer:

C. 42.57 and 42.58

Step-by-step explanation:

The best way is to go to a calculator and put in the numbers:

7√37 is 42.5793377121

So you simplify

42.5793377121

which is

42.58

Now you got your two numbers:

42.57 and 42.58

(If you rounded down you will result in 42.57)

So the answer is C. 42.57 and 42.58

2.54 + 0.38y = 2(2.61 -0.48y)?
What is the answer

Answers

Answer:

y = 2

Step-by-step explanation:

2.54 + 0.38y = 5.22 - 0.96y

1.34y = 2.68

y = 2

- 1(t+8) =7.1 please hurry

Answers

Answer:

t=-15.1

Step-by-step explanation:

Answer:

t = −15.1

Step-by-step explanation:

Food bill: $45
Tip: 18%
Sales tax (on food only): 5.5%

Answers

Answer:

$55.58

Step-by-step explanation:

First off turn your percent to decimals then times it by 45 like this

45 x 0.18 = 8.10

45 x 0.055 = 2.475 - 2.48 (round this one up)

Now add them all together

45 + 8.10 + 2.48 = 55. 58

ANSWER: $55.58

There were 2.1 million people living in Dubai in 2013
1.75 million of these people were not born in Dubai.
Work out 1.75 as a percentage of 2.1

Answers

Answer:

5/6 I believe Because there is a repeating 3. .83333333  told me .833333_ as a fraction is 5/6

Step-by-step explanation:

Divide.

120÷5

Enter your answer in the box as a fraction in simplest form.

ill give brainliest

Answers

Answer:

24/1

Step-by-step explanation:

24/1. because when you dive you get 24. 24 in fraction form is 24/1.

Select all that apply.

Which lines have a slope of -2?

Answers

Answer:

Line ALine B

Step-by-step explanation:

When the problem is asking which lines have a slope of -2, this is referring to the steepness or rate of change. To determine which lines have a slope of -2, the line must have a rise of -2 and a run of 1. This means that the line will go down 2 units every 1 unit to the right.

Also, if a line is parallel (lines which never cross), it will have the same slope.

You can also eliminate lines c, and d because they increase while lines a, and b decrease. A and B have the same slope because they are parallel and decrease which means that this must be the answer.

At the beginning of the month, Sheryl had a balance of $120 in her checking account. She then made a purchase for $80, using her checking account. How much money will Sheryl need to deposit if she wants her account balance to be the same as it was at the beginning of the month?

Answers

$80

add what you took out

how do i know if a system of equation has infinite number of solutions

Answers

A system of equations has an infinite number of solutions when after solving the system, you end up with a true statement.

For example, let’s say you solve a system of equations and your result is 5=5. 5=5 is a true statement, but it doesn’t tell us anything about the x or y value solutions to the system. So because we’re only left with 5=5, there are infinite solutions to the system.

PLEASE I NEED HELP ASAP!!
A birthday clown charges $15 per visit plus $27.50 per hour. If the clown charged $97.50 for Jessica's party, for how many hours did the clown perform at the party? ​

Answers

Answer:

3 hours

Step-by-step explanation:

97.5-15=82.5

82,5/27.5=3

Which expression is equivalent to

Answers

Answer:

i think the answer is, A...

What should you do to each side of the equation to solve -32+x=53?

Answers

Answer: c. add 32

Step-by-step explanation:

Answer:

add 32

Step-by-step explanation:

it will solve for x

Jennifer is shopping with her mother. They pay $2 per pound for tomatoes at the vegetable stand.
A. Find the constant of proportionality in the situation.
B. Write an equation to represent the relationship.

Answers


hopefully this helpssss

Can someone help me #1

Answers

Answer:

8×8×8 x 8×8×8×8×8

Step-by-step explanation:

I'm not completely sure if this is what the question is asking so I hope this helps

Answer: 16777216

Explanation: 8^3 = 512 and 8^5 = 32768
512 + 32768 = 16777216

What number is 45.5% of 75

Answers

Answer:

3412.5

Step-by-step explanation:

45.5x75

6825/2 =3412.5

Answer:

65 is my answer because it honestly fells right

Please help. Thank you!

Answers

Answer: See explanation

Step-by-step explanation:

By the Triangle Inequality Theorem, the length of the side must be greater than 1 ft because the sum of two side lengths must be greater than the length of the third side. The third side must be less than 7 ft but greater than 1 ft.

Triangle inequality: 1 < x < 7

Hope that helped!

Tell whether 72.72 is terminating or repeating.

Answers

Answer:

terminating

Step-by-step explanation:

it would be repeating if it said 72.72727272...

Answer:

terminating

Step-by-step explanation:

only if it keeps going or has a bar over a number after the decimal point then it would be repeating

A water pipe is 4 7/12 feet beneath the surface of the road. What is the elevation of the pipe, in feet, expressed as a decimal?

Answers

The answer is C. U just have to divide 7 and 12 to get your decimal

1 2/3 divided by 1 1/2 in simplest form

Answers

Answer:

10/9 or 1.1 or 1 1/9

Step-by-step explanation:

10/9 or 1.1 in decimal form

Mike had 84 dollars to spend on 9 books. After buying them he had 12 dollars.
How much did each book cost?

Answers

Answer:

$8

Step-by-step explanation:

Answer:

each book cost 8 dollars

Find the slope of the line.

Answers

Using the two points given, we can plug them into  m = (y2 -- y1) / (x2 -- x1)

(-2,4)  (3,-2)

-2-4/ 3--2 = -6/5

Therefore the slope of the line would be [tex]-\frac{6}{5}[/tex]

or D

17. Solve v =
(7)(-3).

Answers

Answer:

-21

Step-by-step explanation:

(7)(-3) = 7 x -3 = -21

The Kid Laroi

(5,2) is reflected across x-axis. The new point is on:
A. (5,-2)
B. (-5,2)

Answers

Answer:

I believe it would be (5,-2)

Step-by-step explanation:

(5,2) is in quadrant 1 and if it is reflected on the x axis then I think it would be (5,-2). Correct me if im wrong.

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