the square of a number decreased by 15 is twice the number. find the number

further explanation please

Answers

Answer 1

Answer:

x = 5, -3

Step-by-step explanation:

x² - 15 = 2x

x² - 2x - 15 = 0

(x - 5)(x + 3) = 0


Related Questions

Someone pleaseee help this is my second time I’ve asked the same question please help I need the last one

Answers

Answer:

yes,congruent

reflect about x=-2

translate up 4 and 3 to left

Step-by-step explanation:

same area so they're congruent

Evaluate the expression when m=3. m 2 - 5m + 7​

Answers

Answer:

-2

Step-by-step explanation:

Substitute 3 for m: (3)2 - 5(3) + 7

Simplify: 6 - 15 + 7

Follow PEMDAS and subtract 6 from 15: -9 + 7

Add: -2

Hope this helps ^-^

You said m = 3.

Replace every m you see with 3.

m^2 - 5m + 7

(3)^2 -5(3) + 7

9 - 15 + 7

-6 + 7 = 1

Answer is 1.

need help
problem/question in image below ​

Answers

Answer:

Option A would be the correct answer

I don't have an explanation to type but you can trust me :)

Please mark as brainliest for further answers :)

y=x^2-1
domain:
range:
function?

Answers

Answer:

Hi! The answer to your question is

Domain: (-∞,∞), {xlx ∈ R}

Range: [-1,∞), {yly [tex]\geq[/tex]-1}

Yes Function

Step-by-step explanation:

☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆

☁Brainliest is greatly appreciated!☁

Hope this helps!!

- Brooklynn Deka

please please answer and dont put any links :)

Answers

9x-6+6x-1=98
15x+7=98
15x=105
x=7
hope this helps :)

FIRST ONE TO AWNSER AND IF CORRECT GETS BRAINLYIST AND 50 POINTS!!!!!
Malik asked his teacher if there was a way to check his answer after writing equivalent expressions. What should be his teacher’s response?

A. Choose a number to substitute for the variable. Find the value of each expression. If the values are even, the expressions are equivalent.

B. Substitute a number for the variable. If the simplified expressions have the same value, the expressions are equivalent.

C. Multiply each expression by the same number. If the expressions are equal, the expressions are equivalent.

D. Add a number to each expression. If the simplified expressions are equal, the expressions are equivalent.

Answers

Answer:

the answer would be A ? ig

help plzzzzz! it's math and I'll give 30 points ​

Answers

Answer:

[tex]\sqrt{45}[/tex]

Step-by-step explanation:

Hi there,

In order to solve this problem, you have to know the Pythagorean Theorem:

[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]

We can see from the graph that line segment ML and LN are 6 and 3 units respectively. Since we know the lengths of two sides of the triangle, we can use the theorem above to find the hypotenuse (MN).

⇒ [tex]6^{2}[/tex] + [tex]3^{2}[/tex] = [tex]c^{2}[/tex]

⇒ 45 = [tex]c^{2}[/tex]

⇒ c = [tex]\sqrt{45}[/tex]

Hope this explanation helps. Cheers.

What is the factored form of 8y2 + 12y?
a 4 (4y2 + 8y)
b 8y(y + 4)
c 4y (2y + 3)
d 8y (y2 + 4)

Answers

Answer:

Hi! The answer to your questions is C. 4y (2y+3)

Step-by-step explanation:

☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆

☆Brainliest is greatly appreciated!☆

Hope this helps!!

- Brooklynn Deka

Directions: Solve for x.

Answers

Answer:

x = 6

Step-by-step explanation:

From the given picture,

ΔABC and ΔADE are the similar triangles.

By the property of similar triangles,

Corresponding sides of the similar triangles are proportional.

[tex]\frac{AB}{AD}=\frac{AC}{AE}[/tex]

[tex]\frac{x+18}{x}=\frac{28}{(28-21)}[/tex]

7(x + 18) = 28x

7x + 7×18 = 28x

28x - 7x = 126

21x = 126

x = [tex]\frac{126}{21}[/tex]

x = 6

HEY THERE! PLS HELP ME WITH THIS MATH QUESTION- AN EXPLANATION WOULD BE GREAT! THE CORRECT ANSWER SHALL BE MARKED AS BRAINLIEST AND ACHIEVE POINTS! THANKS :)
xoxo

Answers

Answer:

105

Step-by-step explanation:

To find area, you have to multiple the width by the height.

15*7=105.

Answer:

Area = 2307.9 cu.cm

Step-by-step explanation:

Height of the cylinder (h) = 15cm

radius (r) = 7 cm

we know ,

[tex]area \: of \: cyliner = \pi {r}^{2} \times h \\ \: \: \: \: = 3.14 \times {(7cm)}^{2} \times 15cm \\ \: \: = (3.14 \times 49 \times 15) {cm}^{3} \\ = 2307.9 {cm}^{3} [/tex]

Which statement about the data represented in the graph appears to be de
A)
100% of employees hold a master's degree.
B)
69% of employees hold a bachelor's degree.
44% of employees hold a bachelor's degree.
D)
31% of employees hold a PhD.

Answers

Answer:

A. 100% of employees hold a master's degree.

Step-by-step explanation:

Sana nakatulong


Help this is due in 2 minutes

Answers

Answer:

The value of the machinery after 5 years is $236.20

Step-by-step explanation:

Generally, we have the depreciation exponential expression as;

V(t) = I (1 - r)^t

V(t) is the value of the machinery at a point in time

I is the initial value or the cost of the machinery when bought which is $400

r is the rate of decrease which is 10% and is same as 10/100 = 0.1

t is the time which is 5 years

Substituting these values;

V(5) = 400( 1 - 0.1)^5

V(5) = 236.196

to the nearest vent, this is $236.20

(9x + 4) - (-5x2 - 5x + 7)

Answers

Answer:

44 I think

Step-by-step explanation:

i don't know I'm not too sure

which is the correct input-output table for the function g(x)=-1/2(4x+6)

Answers

Answer: The third choice.

Step-by-step explanation: To find the first output, start with your first input. In this case, it's -2, so your equation would be g(-2)= -1/2(4(-2)+6). Start by solving inside the parenthesis. 4x-2=-8 and -8+6=-2. -1/2x-2= 1, so your first output should be 1. The only choice that has this is the third one, so that is your answer. Hope I could help :)

HELP I WILL GIVE BRAINLIEST AND THANK AND 5 STAR!

Answers

Answer:

4.     2

Step-by-step explanation:

Subtitue the value of variable into the equation and simplify 2

Answer:

2 and 16/3 is the answer

Step-by-step explanation:

4.

putting value of n in given expression

20-3.6

20-18

2 answer

5.

putting value of n in given expression

(2/3).6+(2/3).2

4+(4/3)

(12+4)/3

16/3 answer

Consider the triangles.

Triangle C D E. Angle C is blank, angle D is 87.3 degrees, angle E is 35.5 degrees. Triangle R S T. Angle R is blank, angle S is 57.2 degrees, angle T is 87.3 degrees. Answer the questions about these triangles. What is the measure of angle C? Which angle corresponds to angle C? What can be concluded about the triangles?

Answers

Answer:

C = 57.2

Angle S corresponds to angle C

Both triangles are symmetrical to each other.

Answer:

What is the measure of angle C?

57.2

Which angle corresponds to angle C?

angle S

What can be concluded about the triangles?

The triangles are similar.

Step-by-step explanation:

John Burroughs $6.50 from his friends to pay for snacks and $11. 75 from sister to go to the movies. How much money does he need to repay

Answers

Answer:

18.25

Step-by-step explanation:

......ur welcome.............

Can someone help me figure this out I'm completely lost and this is due in like an hour, the question is "Use the diagram to find the length of GH​."

Answers

Answer:

GH = 4

Step-by-step explanation:

GH = AB due to congruency markings therefore

5y - 8 = 3y

-8 = =2y

4 = y

Answer:

GH=12

Step-by-step explanation:

You use what this other solution to the answer was. However, they did not include that GH is 3y, so while one y=4, 3y=12. Therefore, GH=12

Tell whether this equation has no solution, one solution, or infinitely
many solutions.
2x+5=5x-1
O no solution
Oone solution
O infinitely many solutions

Answers

Answer:

infinitely many solutions

Step-by-step explanation:

infinity many solutions

6. The height distributions of two different classes at Dover Elementary School are shown below. Both groups have the same interquartile range (IQR). Dover Elementary School Class Heights Third grade Fourth grade + 46 + 47 + 48 + 49 + 50 + 51 + 52 + 53 54 '55 which class has the greater median height?​

Answers

Answer:

G.fourth grade

Step-by-step explanation:

The media is the line inside the box that’s the middle

In third grade the median is 50 but in fourth grade the median is 52 so therefore your answer is fourth grade

And the reason I know this is because I’m in 7th and have the exact same question

what is the probability of a chance event is 0.05, it to happen when compared to a chance event with a probability of 0

Answers

Answer:

I can't understand

Step-by-step explanation:

I will just try to rewrite your question so someone lese can answer it.

"What is the probability of a chance event, with a probability of 0.05, to happen when compared to a chance event with a probability of 0."

or just what is the probability(how high or low are the chances) of an event with a very low chance of happening when compared to an event that can never happen.

help please thank you

Answers

Answer:

C

Step-by-step explanation:

Take sides AD and MP.

6 in. in ADCB is 3/2 * 4 in. in MPON

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!

Answers

Answer:

Columbian exchange. Tell a story in chronological order of the changes that the community undergoes as it and the communities around it make contact with Europeans over a span of roughly 50 to 100 years.

This section is worth 20 points. See the scoring rubric for more details on how you

will be graded

Use the evidence you gathered to tell the story of a hypothetical indigenous

community in the Americas and its experience involving the Columbian Exchange.

Come up with a community whose circumstances are typical of many in Central

America, the West Indies, or another part of the Americas that had direct contact with

Europeans. Tell the story in chronological order, but feel free to skip whole years or

decades so that you can cover each of the important topics related to the activity: the

availability of goods, the effects of disease, and the impact of European culture

(language and religion, for example), at the very least.

Think of your story as more of a summary than a work of fiction; you must cover a

large span of time in few words. Base the details of the story on factual evidence and

cite your sources, but keep in mind that the text should be written as a story, not as

an essay with a conventional introduction, body, and conclusion. Aim for about 700

to 1,200 words.

free body diagram can be used to help work out the net force acting on an object. True or, false?Columbian exchange. Tell a story in chronological order of the changes that the community undergoes as it and the communities around it make contact with Europeans over a span of roughly 50 to 100 years.

This section is worth 20 points. See the scoring rubric for more details on how you

will be graded

Use the evidence you gathered to tell the story of a hypothetical indigenous

community in the Americas and its experience involving the Columbian Exchange.

Come up with a community whose circumstances are typical of many in Central

America, the West Indies, or another part of the Americas that had direct contact with

Europeans. Tell the story in chronological order, but feel free to skip whole years or

decades so that you can cover each of the important topics related to the activity: the

availability of goods, the effects of disease, and the impact of European culture

(language and religion, for example), at the very least.

Think of your story as more of a summary than a work of fiction; you must cover a

large span of time in few words. Base the details of the story on factual evidence and

cite your sources, but keep in mind that the text should be written as a story, not as

an essay with a conventional introduction, body, and conclusion. Aim for about 700

to 1,200 words.

free body diagram can be used to help work out the net force acting on an object. True or, false?

Step-by-step explanation:

where my brainlest

What is mpo?
128°
O 1730
O 1920
O 256°

Answers

Answer:

it's the 2nd one because

Step-by-step explanation:

have a nice day

Find the area of the given shape

Answers

Answer:

Step-by-step explanation:

15 * 9=135

135 + 37.5 = 172.5

44% of what number is 11?

Answers

25

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

which of the following points are in the solution set to the inequality below? Select all that apply.
y<-4x+6

a: (4,3)
b: (-4,1)
c: (5,-2)
d: (-3,5)
e: (1,6)
f: (3,-6)

Answers

Step-by-step explanation:

a) 3<-4*3+6

3<-12+6

3<-6

which is false

b)1<-4*(-4)+6

1<16+6

1<22

which is true

c) -2<-4*5+6

-2<-20+6

-2<-14

which is false

d) 6<-4*1+6

6<10

which is true

f)-6<-4*3+6

-6<-12+6

-6<-6

which is false

I hope this helps.

Mikel gave a $1.32 tip for an order that cost $8.80.
Determine whether or not each tip below is proportional to Mikel's tip.
Proportional to Mikel's tip
Not proportional to Mikel's tip
$2.22 tip for a $14.80 order
$1.86 tip for a $10.50 order
ООО
$0.78 tip for a $5.20 order

Answers

Answer:

Step-by-step explanation:

Multiple the numbers one by one and the answers you’ll get u can choose to divide multiple plus or minus and u will get the answer

Which point on the number line best represents the location of 78?

F Point M
G Point N
H Point P
J Point O

Answers

Answer: F
because if you simplify 78 it’ll give you about 8.831...

Situation:
Find the age of the spear head to the nearest
year.
An archaelogist in Turkey discovers a
spear head that contains 32% of its
original amount of C-14.
Enter the correct answer.
DONE
N = Noekt
No - inital amount of C-14 (at time
t = 0)
N = amount of C-14 at time t
k = 0.0001
t = time, in years

Answers

Time in the years I think not I am not for sure good luck :)
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