Mathematics High School

f(x) = x2 – 2x – 15
BRANARE
Why is x=-3 not x=-5

Answers

Answer 1

Answer:

x = 5, -3

Step-by-step explanation:

f(x) = x²-2x-15

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

x = 5, -3

Related Questions

please help i don’t know how to find the slope

Answers

Y= mx+b is the formula for writing and equation for slope.


M= slope
B= y-intercept

You replace the m and b with the info given to you in the problem.

Answer: y = -3/4x -6

-1 2/7 + 4 i really need to answer this.

Answers

Answer:

5 29/100

Step-by-step explanation:

google helps

Answer:

n = 5/4

Step-by-step explanation:

Item 11 You buy 2.6 pounds of apples and 1.475 pounds of peaches. You hand the cashier a $20 bill. How much change will you receive? You will receive $ change.

Answers

Answer:

$14.90625

Step-by-step explanation:

Using the conversion rate

$1 = 0.8 pounds

If you buy 2.6 pounds of apples and 1.475 pounds of peaches, the total cost of apple and peaches is expressed as:

= 2.6 pounds + 1.475 pounds

= 4.075 pounds

Convert to dollars

$1 = 0.8 pounds

$x = 4.075 pounds

cross multiply

0.8x = 4.075

x = 4.075/0.8

x = $5.09375

This means that the cost of the apple and peaches is $5.09375.

If you hand the cashier a $20 bill, the change that you will receive will be: $20 - $5.09375 = $14.90625

I need 15. please its my last question and fast​

Answers

Answer: X(to the power of 0) over 3(to the power of 2)



Explanation: It is equal to 1/9

Cantrise surveyed 100 students about their favorite
type of music. After she makes the graph, she receives
two more votes for rap. What is the new ratio of rap to
total types of music?

Answers

Answer: 2:100

Step-by-step explanation:

Convert 5/8 into a denominator of 100

Answers

U can use the cross multiplication to find out

5/8 = x/100

x=5/8 * 100

x= 62.5

Your final answer: 62.5/100

Hope this does it

P.S

Plz mark brainliest?

Which statement best models the equation 10+(−10)=0 ?

Answers

What are the statements? So I can help you out

The Bernards are trying to determine their babysitter's rates but are to embarrassed to just ask her. They were charged $20 for 2 hours last week, but only $31 for 4 hours this week. What is the formula to determine A(Amount) given t(time in hours)?

Answers

Answer:

A = 5.5t + 9

Step-by-step explanation:

We assume that the relationship between t and A is linear.

We have two points on a line: (2, 20) and (4, 31).

We now find the equation of the line.

A = mt + b

m = (31 - 20)/(4 - 2) = 11/2 = 5.5

20 = 5.5(2) + b

20 = 11 + b

b = 9

A = 5.5t + 9

Look at the area models.

What is the product of the fractions represented by
these two area models?

Answers

Answer:

4/25

Step-by-step explanation:

Electron rescued 5 dogs and 3 cats this week.
If this happens every week for 6 weeks, how many animals
will Electron rescue?

Answers

Answer:

48

Step-by-step explanation:

5+3 multiplied by 6 weeks is 48

Squandering Sam has $1,050 in his bank account. Every week he withdraws $40 to buy scratch off tickets. Saving Sally doesn’t have any money now, but is depositing every penny of the $35 a week she makes into a bank account. How many weeks will it take for Sam and Sally to have the same amount of money in their accounts?

Answers

Answer:

15 weeks

Step-by-step explanation:

Week 1: 1,050 ≠ 0

Week 2: 1,010 ≠ 35

Week 3: 970 ≠ 70

Week 4: 930 ≠ 105

Week 5: 890 ≠ 140

Week 6: 850 ≠ 175

Week 7: 810 ≠ 210

Week 8: 770 ≠ 245

Week 9: 730 ≠ 280

Week 10: 690 ≠ 315

Week 11: 650 ≠ 350

Week 12: 610 ≠ 385

Week 13: 570 ≠ 420

Week 14: 530 ≠ 455

Week 15: 490 = 490

Figure 1 was
with a scale factor of
with the center at the origin
It was then
6 units
and 5 units
to produce
Figure 2.
Figures 1 and 2 are
because Figure 1 was

Answers

Huh? what do you mean

[SREENSHOT ATTACHED]

Please helpp! :((

Each set of directions describes how to plot a point starting at the origin. Drag each set of directions to show what point would be plotted.

Answers

1. right 1, down 4 (down 4, right 1)
2. right 4, down 1 (down 1, right 4)
3. left 1, up 4
keep in mind that the x axis is the horizontal axis (the further right you go the larger the number) and that the y axis is the vertical axis (the further up you go the larger the number)! hope this helped you out!

Determine the slope of that line that pass through the points (5,2) (-6,8)

Answers

Answer:

The answer is

[tex] \huge - \frac{6}{11} \\ [/tex]

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

[tex]m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\ [/tex]

From the question we have

[tex]m = \frac{8 - 2}{ - 6 - 5} = \frac{6}{ - 11} = - \frac{6}{11} \\ [/tex]

We have the final answer as

[tex] - \frac{6}{11} \\ [/tex]

Hope this helps you

Please Help due in 3 min

Answers

Answer:

D y=-4x+1

Step-by-step explanation:

Answer:

C) -4x+1

Step-by-step explanation:

Hector cycled a total of 12 kilometers by making 4 trips to work. After 6 trips to work, how many kilometers will Hector have cycled in total? Solve using unit rates.
NOWWWW PLEASEEE!!!

Answers

Answer:

18km

Step-by-step explanation:

12km = 4 trips

express as a ratio.

3km : 1trip

then subsitute the amount of trips.

18km : 6trips

1.) Solve for c:
4c + 5 > -c-5

Answers

Answer:

Step-by-step explanation:

Perform the indicated operation.
-3(-8)(-2)

Answers

Answer:

-48

Step-by-step explanation:

Multiply all numbers to get -48

find the inverse of f(x)=x^3-8

Answers

Answer:

Step-by-step explanation:

18,000 divided by 60

Answers

Answer:

Step-by-step explanation:

300

300

Simple

18,000/60 = 300

James types 90 words in 2 minutes. At this rate, how many words can james type in 15 minutes?
​

Answers

Answer:

Step-by-step explanation:

675 because its 45 words per minute x15 for the 15 minutes

A function is shown in the table below.
Х
18 -5
2.
-11 7
У
2
4
-7 12 11
Which additional point(s) can also be added to the table so that the table of values satisfies the definition
Select all that apply.
A. (-11,4)
B. (-5,3)
C (9,-5)
D. (7,13)
E. (0,4)

Answers

Answer:

Answer D, but you wanna subtract them from the opposite

If the m∠1 =57°, Find the measure of ∠6

A- 123 °
B- 57 °
C- 180 °
D- Cannot be determined

Answers

Answer:

123

Step-by-step explanation:

[tex]180 - 57 = 123[/tex]

The solution is, the value of m∠6 is 123, i.e. A- 123 °.

What is an angle?

In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle. The two rays are called the sides of an angle, and the common endpoint is called the vertex.

We know that, a ray is a line that continues on forever inn one direction with a point at it's start.

here, we have,

from the given figure we get,

angle 1 is equal to angle 5

as they are corresponding angles,

so, m∠1 =57° = m∠5

now, we have,

that the sum of 5 & 6 is 180

so, they are supplementary angles.

i.e. m∠6 = 180 - m∠5

             =180 - 57

             =123

Hence, The solution is, the value of m∠6 is 123, i.e. A- 123 °.

To learn more on angle click:

brainly.com/question/28451077

#SPJ3

Simplify this expression.
20.25 – 9 +11
-
o
18.75
21
O
40.75

Answers

Answer:

22.25

Step-by-step explanation:

there are no special things to be considered.

You can simplify the last two numbers. Because -9 +11 is the same as +2 you can see the answer:

20.25 + 2 = 22.25

The ratio of men to women working for a company is 3 to 2 . If there are 58 women working for the company, what is the total number of employees?

Answers

Answer:

145

Step-by-step explanation:

Jason solves a math problem on the board using the Power of Products Property. Is his answer correct? Explain.

63 • 73 = 423
A.


Yes; 63 • 73 is equal to (6 • 7)3 or 423.
B.


Yes; 63 • 73 is equal to (6 • 7 • 3) or (42 • 3).
C.


No; 63 • 73 is equal to (6 • 7 • 3) or (42 • 3).
D.


No; 63 • 73 is equal to (6 • 7)3 + 3 or 426.

Answers

Answer:A

Step-by-step explanation:

the answer to ur question is A

Factorise x^2-10
I need help

Answers

Answer:

This expression is not factorable with rational numbers.

How do I solve for pie?​

Answers

Pi is a unlimited number but when used in most math equations they just mean it simplified which is 3.14.

4 – 3x = 8 – 4x what is X

Answers

Answer:

x=4

Step-by-step explanation:

I hope this helps you

a. 3.04 + 0.98
Help pleaseee for my little sister

Answers

Answer:

4.02

Step-by-step explanation:

     1

3 . 0 4

0 . 9 8

4 . 0 2

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