For f(x)= 2x-15 ,find f(x) when x=-4


I just need some help on this question.

Answers

Answer 1
2(-4)-15=-8-15=-23 so f(x)=-23

Related Questions

A cookie recipe uses
cup of sugar for 2 dozen cookies. How many cookies can be made with 1 cup of sugar?
O A. 36
OB. 12
O C. 48
D. 24
PLSSS HURRY

Answers

D 21 a dozen is twelve so 2 dozens to a cup would be 21

Write down the equation of a line whose slope is -7 and crosses the y-axis at 7. Express in slope-intercept form.

Answers

Answer:

y= -7x+7

Step-by-step explanation:

y= mx+b

y= slope x+ y intercept

The equation of the line having the slope -7 and y-intercept  is 7 is: y = -7x + 7

What is the equation of line?

A straight line's equation is a relationship between its x and y coordinates, and it is written as y = mx + c, where m is the line's slope and c is its y-intercept.

We are given that the slope m is -7,

and the line crosses the y-axis at 7.

so the value of c = 7

Therefore, we can substitute these values into the slope-intercept form to get:

y = -7x + 7

So the equation of the line is y = -7x + 7.

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Help!- How dilations are used in everyday life ? How about similarity transformations ?? How are they meaningful

Answers

Answer: Dilations can be used in architecture in order to make a sample of their final design. They must dilate the scale and measurements to match to their sample.

A you tube plugg in: please check : (

If you could please check out our you tube channel, Evimero Academy

Thank you so much and have a wonderful day

help me plssssssssssssssssssss

Answers

Answer:

D

Step-by-step explanation:

It says she has a maximum, that means she cannot go pass the amount ($50)

It costs $7 to get in so you have to take that from what she has ($50)

so you need to have the opposite which would be to add on the left to spend

Find the volume of the prism, using a calculator if necessary.
4 cm
9 cm
5 cm
5 cm
12 cm

Answers

Answer:

where is the drawing l don't understand the measurements

Determine whether the following graph represents a function

Answers

Yes because it has only one y intercept

Step-by-step explanation:

Anything that has more than one y intercept isn't function.

Answer:

Yes

Step-by-step explanation:

the function doesnt go straight up, you cant have the same x coordinate, it doesnt work out

What's 3 5/6 divided by 3 3/4 in Simplest form

Answers

Answer:

= 1   1/45

Step-by-step explanation:

3 5/6   /   3 3/4

23 /  15

6       4

23 x 4   =  92

6     15  =   90

=  46

   45

= 1   1/45

Given the numbers: 6 6 7 7 7 8 8 8 8 9 and
choosing a number at random from the list, what is
the probability that the number is 8?

Answers

Answer:

[tex]\frac{4}{10} =\frac{2}{5}[/tex]

Step-by-step explanation:

Evaluate 1/3 divided by 1/2

Answers

Answer:

2/3

Step-by-step explanation:

1/3 x 2/1 = 2/3

Answer:

   2/3

Step-by-step explanation:

so what you do is switch the numerators and deno. (1/3 1/2)turns into 3/1 and 2/1 you multiple both top and bottom numbers and boom!!

(simplify if need)

On a spinner, there are 10 equal spots, numbered 1-10. What is the probability of spinning a 5 and then spinning a 5 again?

Answers

Answer:

1 out of ten

Step-by-step explanation:

so if there are ten sides and all are numbered 1-10 then 5 is only one tenth.

5a + 5b + 5c = −20
4a + 3b + 3c = −6
−4a + 3b + 3c = 9

Answers

Answer:

Step-by-step explanation:

HELPP ASAPPPPP

Evaluate ym if y=5 and m=4

Answers

Answer:

20

Step-by-step explanation:

ym

If y=5 and m= 4, then plug in both values and multiply 5 x 4. This equals to 20.

The answer is 20 tttttttttt

Which inequality represents the situation ten less than a number is a minimum of 30?

Answers

Answer:

x - 10 ≥ 30

Step-by-step explanation:

I'm 99.8% sure

It says 10 less than a number so that means subtract 10 from a number

Then it says minimum of 30 so that means the number has to be 30 or more so that's why I use the more than of equal to sign.

Hope this helps!

The product of a number b and -1.6 is less than -9.6.

Answers

Answer:

I don't have Idea

which expression has the same value as -3 + (-5)

A: -3 - (-5)
B: - 3 + 5
C: -5 + (-3)
D: -5 - (-3)

Answers

Answer:

its b

Step-by-step explanation:

if negative 5 is an absolute value it becomes just a regular 5. Therefore it would be equivalent to -3+5. (sorry if I'm wrong)

A password is 4 characters long, consisting of 2 letters and 2 numbers. The password must begin and end with a
letter. If numbers can be repeated but letters cannot, how many possibilities are there?
a. 65,000
b. 60,840
c. 58,500
d. 52,650

Answers

Answer:

a.

65,000

Step-by-step explanation:

There are 65000 possibilities of 4 character-password

What is a password?

A password is a security code that is used for verifying identities

The password has 4 characters.

The password must begin and end with a letter.

So the selections are:

First = 26

Last = 25

The other selections are:

Second = 10 digits

Third = 10 digits

So, the number of password is:

Password = 26 * 10 * 10 * 25

Evaluate

Password = 65000

Hence, there are 65000 possibilities of 4 character-password

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Ratios. Fill in the blank using the Word Bank. A recipe for one batch of cookies calls for 5 cups of flour and 2 teaspoons of vanilla. How many batches can you make with 15 cups of flour and 6 teaspoons of vanilla?

Answers

Answer:

3 batches of cookies

Step-by-step explanation:

Bank. A recipe for one batch of cookies calls for 5 cups of flour and 2 teaspoons of vanilla.

How many batches can you make with 15 cups of flour and 6 teaspoons of vanilla?

We can calculate the batches using either cups of flour or number of teaspoons.

For flour

5 cups of flour = 1 batch of cookies

15 cups of flour = x

Cross Multiply

5x = 15 × 1

x = 15/5

x = 3 batches of cookies

For teaspoons of vanilla

2 teaspoons of vanilla = 1 batch of cookies

6 teaspoons of vanilla = x

Cross Multiply

2x = 6 × 1

x = 6/2

x = 3 batches of cookies.

Hence: you can make 3 batches of cookies with 15 cups of flour and 6 teaspoons of vanilla

A hairdresser receives a discount on each comb purchased. The original price of each comb is x dollars. The hairdresser purchases 15 combs for a total of (15x-45) dollars. By how much is each comb discounted?

Answers

Answer:

$3

Step-by-step explanation:

Given that:

Price of each comb = $[tex]x[/tex]

15 combs were purchased in = $[tex](15x-45)[/tex]

To find:

Amount of discount offered on each comb.

Solution:

First of all, let us calculate the price of 15 combs at the price of $[tex]x[/tex] each.

Original Price of 15 combs = Price of one comb [tex]\times[/tex] Number of combs = $15[tex]x[/tex]

Now, there is some discount provided on the purchase of 15 combs.

Discount offered on 15 combs = Original price of 15 combs - Discounted price of 15 combs = [tex]15x- (15x-45)[/tex] = $45

Discount offered on each comb = Discount on 15 combs divided by 15

Discount offered on each comb = [tex]\frac{45}{15}[/tex] = $3

What is the value of s ?
Please help
No guessing

Answers

Answer:

s = 17

Step-by-step explanation:

use Pythagorean theorem a² + b² = c²

where a = 8

           b = 15

           c = s (which is unknown)

plugin values into the formula:

a² + b² = c²

8² + 15² = s²

s = √(64 + 225)

s = √289

s = 17

1. Calculate the value of x in the following diagram. 53 - Y IN Q 5x 18​

Answers

Answer:

x = 7

Step-by-step explanation:

QY = 5x

YZ = 18

QZ = 53

Thus:

QY + YZ = QZ (segment addition postulate)

5x + 18 = 53

5x = 53 - 18 (subtraction property of equality)

5x = 35

Divide both sides by 5

x = 7

Given the table, what is the linear equation?



x y

1 7

2 10

3 13

4 16

Answers

Answer:

yes

Step-by-step explanation:

X + 3y

I think this is true. I haven’t done this in a few years.

Help me out please anyone

Answers

Answer

its sorryyy

Step-by-step explanation:

HELP PLEASEEE. Write in slope intercept form
5x - 3y = -9
a. y = 5/3x - 3
b. y = 3/5x + 3
c. y = 5/3x + 9
d. y = 5/3x +3

Answers

Answer:

d

Step-by-step explanation:

i think it D im not tooo sure

20. A community is having a Taste of the Town event featuring dishes from the area’s best restaurants. The cost of admission is $25 in advance and $35 at the door. There are x people who pay in advance. A total or 530 tickets are sold. Which equation can be used to find the total amount, s, of money from ticket sales?

Answers

Answer:

18550 - 10x

Step-by-step explanation:

Given that :

Cost of admission in Advance = $25

Cost of admission at the door = $35

Number of people who paid in advance = x

Total number of tickets sold = 530

Total amount made from ticket sales will be :

(Number who paid in advance * cost) + (number who paid at the door * cost)

(25 * x) + (530 - x) * 35

25x + 18550 - 35x

18550 - 10x

Which statement describes this pair of congruent triangles?


Answers

NLM bc the angled correspond, making the triangles congruent

Choose yes or no to tell if the number 10 to the third power will make each equation true

Answers

Do you have a picture of a graph or can you take a picture of your screen so I can help you

Answer:

I need to see the equation to solve it.

Step-by-step explanation:

Are the given lines parallel?
y = 1, and y = 5

Answers

Both of the lines have slope of 0, they will both be a straight horizontal line

Yes, they will be parallel

Write the equation of the line that passes through the points (-4, 7) and (-6, -4).

Answers

Answer:

y = 11/2x + 29

Step-by-step explanation:

the slope goes up 11 and over 2 and the line crosses the y-axis at 29 so thats the y-intercept

What is the value of the expression 10 25 32 64​

Answers

Answer:

its 10

Step-by-step explanation:

2x5=10 or 2+2+2+2+2=10

Answer:

it is 32

Step-by-step explanation:

2x2x2x2x2=32

convert 16 into binary

Answers

convert 16 into binary number is 0b10000

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