Solve
x2 + 2x – 15 = 0

Answers

Answer 1
x2+2x-15=0
2x+2x-15=0
4x-15=0
4x=15
so answer is x= 15/4
Answer 2

Answer:

x = - 5, x = 3

Step-by-step explanation:

Given

x² + 2x - 15 = 0

Consider the factors of the constant term (- 15) which sum to give the coefficient of the x- term (+ 2)

The factors are + 5 and - 3 , since

5 × - 3 = - 15 and 5 - 3 = + 2, so

x² + 2x - 15 = 0

(x + 5)(x - 3) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 5 = 0 ⇒ x = - 5

x - 3 = 0 ⇒ x = 3


Related Questions

what is true about the line that passes through the points (3 ,-7) and (3, 2)?

A.)horizontal.

B.) Vertical

C.)it rises from left to right

D.)it falls from left to right

Answers

Answer:

B. vertical

Step-by-step explanation:

it is vertical because it shares the same x-axis

Answer:

from my to falls left to right.

Find the slope of the following graphs.

A. 2/3
B. 3/2
C. 3
D. - 2/3

Answers

Answer:

Answer is A

Step-by-step explanation:

The slope of the shown line passing through points (3,2) and (0,0) is 2/3. The answer is option A.

Given the points (3,2) and (0,0), we can calculate the change in y and change in x as follows:

Change in y = 2 - 0 = 2

Change in x = 3 - 0 = 3

Now, we can substitute these values into the slope formula:

Slope = (change in y)/(change in x) = 2/3

Here, the line has a positive slope, indicating that as x increases by 1, y increases by 2/3.

This means that the line is ascending from left to right, sloping upwards.

Therefore, the slope of the line passing through points (3,2) and (0,0) is 2/3.

Hence, the answer is option A.

Learn more about the slope of line here:

brainly.com/question/14511992

#SPJ6

There are 12 pieces of fruit in a bowl and 6 of them are apples. What percentage of the pieces of fruit in the bowl are apples?

Answers

That would be:

6/12 x 100
= 50%

Therefore 50% of the fruits are apples.
50% of the fruits are apples

Expand 2(c + 4).
Please help me

Answers

Answer:

2c+8

Step-by-step explanation:

this is because we are using 2 to open up the brackets. You will multiply c by 2 and 4 by 2.

What value of r makes {2r+3}{5}={4r-3}{7}
true?

Answers

The answer is 2
This is the solution:

Please help meeeeee, really stuck

Answers

Answer:

30 m²

Step-by-step explanation:

The figure can be divided into two parts.

The top rectangular part with its width as : w= 2m  and length, l= 9 m

The area , A = l * w = 2*9 = 18 m²

The bottom rectangular part has its width as : w= 2m and length , l = 6 m

The area , A = l*w = 2*6 = 12 m²

Total area is given as :

18 + 12 = 30 m²

Someone please help I’m failing and I need it and include explanation please!

Answers

Answer:

X=18

Step-by-step explanation:

This is on a straight line, which is 180° in total.

Information:

106°

4x

On a straight line

106+4x=180

Subtract the 106 from 180 to cancel it out.

4x=74

Divide 4 to both sides to single the x out

x=18.5

BRAINLIEST AND 50 POINTS GET IT QUICK


The distance, y, in miles, traveled by a car for a certain amount of time, x, in hours, is shown in the graph below:

A graph titled Motion of Car is shown with Time in hours labeled on x-axis and Distance from Starting Point in miles labeled on y-axis. The scale on the x-axis shows the numbers 1, 2, 3, 4, 5, 6, and the scale on the y-axis shows the numbers 0, 14, 28, 42, 56, 70, 84. There are three straight lines in the graph. The first line joins ordered pair 0, 0 with 3, 42. The second straight line joins 3,42 and 4,42 and the third straight line joins ordered pair 4,42 with the ordered pair 5,56.

Which of the following best describes the motion of the car shown?
It travels for 2 hours, then stops for 1 hour, and finally travels again for 5 hours.
It travels for 3 hours, then stops for 1 hour, and finally travels again for 1 hour.
It travels for 3 hours, then stops for 4 hours, and finally travels again for 5 hours.
It travels for 2 hours, then stops for 2 hours, and finally travels again for 1 hour.

Answers

Answer:

It travels for 2 hours, then stops for 1 hour, and finally travels again for 5 hours.

Step-by-step explanation:

Answer:

It travels for 3 hours, then stops for 1 hour, and finally travels again for 1 hour.

Step-by-step explanation:

Sorry I'm late

(I got it right on my FLVS test)

Solve the following equation for x 3x-8=7

Answers

x = 5, add 8 to 7 which would equal 15, and then divide it by 3 which equals 5

I need help with school

Answers

Answer:

5.73 i believe

Step-by-step explanation:

PLS HELP I'LL MARK BRAINLEST

Answers

Answer: x=55

Step-by-step explanation: 35+35=70. 180-70=110. 110/2=55.

X = 55 is the answer hoped it helped :)

Which equation represents a line which is parallel to the line 8x – 7y = 35?

Answers

Answer:

anything with a slope of 8/7

Step-by-step explanation:

What operation would you use to solve: x+7=10

Answers

Answer:

x=3

Step-by-step explanation:

x+7=10

x+7-7=10-7

x=3

Answer:

You would use subtraction

Step-by-step explanation:

To get 7 away, you need to subtract it

The sales tax rate is 7 1/2%. What is the sales tax rate on a 164.00$ purchase?

Answers

Answer:

$176.30

Step-by-step explanation:

7 1/2% can be simplified to 7.5%

7.5% of 164.00 is 12.30

12.30+164.00=176.30

$176.30

find the 6th term of 14,84,504

Answers

the sixth term is 18,144

HELP ME ASAP PLEASE

Answers

Answer:

144.44

Step-by-step explanation:

C = 2 x π x r .      C = 2 x 3.14 x 23  = 144.44

Which term could be put in the blank to create a fully simplified polynomial written in standard form?

8x3y2−_____+3xy2−4y3

x2y2
x3y3
7xy2
7x0y3

Answers

Answer:

x^2    y^2

Step-by-step explanation:

i took the test

always read the comments

Answer: a. x2y2

Step-by-step explanation:

I'm going to give yall brainless help me prd

Answers

Answer:

87 divide 3 is 29  

Step-by-step explanation:

On the first box on the left the top left number should be 3 and 87

the lower box put 27 and 3 on the bottom and the left number should be 9, 27, and 6.

Hope this helps!!

HELP PLEASE IM STUCK!!!!!

Answers

Slope of the function is 5000. It seems the question is in the video so rewatch to find what it is representing.

The town parade coordinators only want a maximum of 95 volunteers. They need 4 volunteers for every float and 27 volunteers to throw candy in a crowd. How many floats can they have in the parade without going over the maximum number of volunteers?

Answers

Answer:

wadadwwda

Step-by-step explanation:

Answer: 17 volunteers for every float

Step-by-step explanation:

I took 95 and subtracted the 27 people from it and then got 68, then i took the 68 and divided that by 4.

Mr.rose takes $777.68 out of his bank account the bank account has 10,364.45 left at the end of the day how much money did mr.rose bank account start with that day

Answers

Answer:

111,865.74

Step-by-step explanation:

it is that answer because you want to multiply then divide

Robbins Corporation offers terms of 2/10, n/30. The sales tax rate is 6%. Source documents are abbreviated as follows: receipt, R; sales invoice, S; terminal summary, TS. Journalize the transactions. No S is needed in the Sale No. column when journalizing in the sales journal.

Answers

Answer: 1/2500 n

Step-by-step explanation:

PLEASE HELPO MEEEEEEE Choose ALL the real-world scenarios below that would represent the
expression 3.50x+15 A). Janice has $15.00 to go to the store. She buys
several packs of Pokemon cards that cost $3.50 each. How much money
does she have left over after she buys x packs? B). Barbara made $3.50
for every bracelet she sold. How much did she make after she sold 15
bracelets?C). Kyle starts with $15.00 and saves $3.50 each day. What
would be the total amount Kyle saves after x days? D). There are 15 more
days of soccer practice, if Coach Miles wants his team to run 3.50 miles
day, how many total miles will they run? E). Ryan bought a pair of jeans
that cost $15.00 and several t-shirts that cost $3.50 each. What was the
total cost of Ryan's purchase after he bought x t-shirts?
O A&C
O B&D
O C&E
O D&A
O E&B

Answers

Answer:

I just need points

Step-by-step explanation:

I just need points

4/5 + 2/3 =
1 1/2-2/6=​

Answers

Answer:

22/15

7/6

Step-by-step explanation:

Have a blessed day

Answer:

4/5 + 2/3= 1 7/15

1 1/2-2/6= 1 1/6

Step-by-step explanation:

1. 4/5 × 3 = 12/15

2/3 × 5 = 10/15

12/15 + 10/15 = 22/15= 1 7/15

2. 1 1/2×3= 1 3/6

1 3/6-2/6= 1 1/6

Please help!!! Thank you!

Answers

Answer:

A and C

Step-by-step explanation:

Perpendicular lines have reciprocal and opposite slopes.

First slope =3,

Second = -3

Third slope = -1/3 (which is opposite and reciprocal to the first)

Last slope = -3

please help me with this will give you brainliest

Answers

What the person said above


Work out the volume of this sphere.
Give your answer to 1 decimal place.
Spheres
Vol = ener
7 cm

Answers

Answer:

Volume of the sphere ( V ) = 1436.02 cm³

Step-by-step explanation:

Explanation:-

Given that the radius of the sphere r = 7 cm

Volume of the sphere

                  [tex]V = \frac{4}{3} \pi r^{3}[/tex]

                 [tex]V = \frac{4}{3} \pi (7)^{3}[/tex]

                 [tex]V = \frac{4}{3} X3.14 X (7)^{3} = 1436.02[/tex]

                 V = 1436.02 cm³

Volume of the sphere

                  V = 1436.02 cm³

Answer:1436.8

Step-by-step explanation:

4/3πr^3

Substitute the 7 with the ”r”

4/3xπx7^3

=1436.8 (to 1 decimal place)

can you help me solve this​

Answers

it should be 116 degrees.

Please help I with give Brainiest if correct

Answers

Answer:

sub to メRαǤE_BlɨƬšメ

Step-by-step explanation:

15 POINTSSS AND BRAINLIEST
Create two equivalent ratios to 4:7.5, one with the first term more than 50 and one with the first term less than 1.

Answers

1.) 52:97.5
2.) 1:1.875

Hope this helps!
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