f(x)=2/5x+k
f(-15) = 12
What is the value of k?

Answers

Answer 1

Answer:

k = 18

Step-by-step explanation:

Given

f(x) = [tex]\frac{2}{5}[/tex] x + k

f(- 15) = 12 , then

[tex]\frac{2}{5}[/tex] × - 15 + k = 12 , that is

- 6 + k = 12 ( add 6 to both sides )

k = 18


Related Questions


Find a point-slope form for the line with slope 1/5 and passing through the point (-4,-9).

Answers

Answer:

y + 9 = [tex]\frac{1}{5}[/tex](x + 4)

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Here m = [tex]\frac{1}{5}[/tex] and (a, b) = (- 4, - 9) , thus

y - (- 9) = [tex]\frac{1}{5}[/tex](x - (- 4) ) , that is

y + 9 = [tex]\frac{1}{5}[/tex](x + 4)

PLEASE HELP ME ASAP!!!!

Answers

Answer:

1 X 88=88

2 X 88=176

3X88=264

4X88=352

Step-by-step explanation:

I don't know how to solve this question.​

Answers

Answer:

P=Q=R

Step-by-step explanation:

Mark me as brainliest

Josh bought 3 bottles of grape juice and 5 bottles of water for a total of $14.50. Mary bought 2 bottles
of grape juice and 3 bottles of water for a total of $9.00. How much does the grape juice cost and the water?

Answers

Answer:

Bottle of water = $2Bottle of grape juice = $1.50

Step-by-step explanation:

Grape juice = gWater = w

Equations:

3g + 5w = 14.502g + 3w = 9.00

Subtract the 3 times the second equation from the twice the first:

2*(3g + 5w) - 3(2g + 3w) = 2*14.50 - 3*9.006g + 10w - 6g - 9w = 29 - 27w = 2

Then, finding g:

3g  + 2*5= 14.503g = 14.50 - 103g = 4.5g = 1.50

please help me answer will get brainliest

Answers

Answer:

32% is 0.32

6% is 0.06

93% is 0.93

150% is 1.5

12.5% is 0.125

Hope this helps!

please helpppppp :((

Answers

Answer:

[tex]4^{21}[/tex]

Step-by-step explanation:

[tex]\frac{4^{12}}{4^{-9}}\\[/tex]

Given 4 = a

From the properties of exponents for the example...

[tex]\frac{a^4}{a^{-2}} = \frac{a*a*a*a}{\frac{1}{a^2} } = (a*a*a*a)*a^2 = a^4 * a^2 = a^{4+2} = a^6[/tex]

Therefore, the answer is....

[tex]4^{12}*4^{9} = 4^{12+9} = 4^{21}[/tex]

Find the surface area of the rectangular prism.
8 yd
4 yd
5 yd

Answers

Answer:

A=184

Step-by-step explanation:

7/15 simplified I’ve tried everything!!PLEASE ANSWER ASAP

Answers

Answer:

You cannot simplify 7/15 to a smaller fraction. But you could divide 7 by 15 to get a decimal.

Step-by-step explanation:

Answer:

you can't simplify the number 7

Find 0.038 as a fraction in its lowest terms

Answers

Answer:

19 / 500

Pls mark as brainliest!!!

Answer:

19/5

Step-by-step explanation:

If you're using a scientific calculator you will be able to find this answer by just simply pressing 0.038 x 100 divided by 1

Jedi donated bottles of alcohol.If 201 of boxes are filled with 42 bottles of alcohol how many bottles of alcohol were donated?​

Answers

Answer:

8,442 bottles of alchohol were donated.

Step-by-step explanation:

201×42= 8,442

No. of boxes - 201
No. of bottles - 42
201*42=8442 bottles are there.

the diagram shows a circle inside a square ABCDB AB = 20 cm. the radius of the circle is 9 cm. work out the area of the shaded region

Answers

Step-by-step explanation:

Area of the square = a²

= 20²

= 400cm²

Area of the circle = πr²

= 22/7 × 9²

= 22/7 × 81

= 254.57cm²

Area of the shaded region = Area of the square - Area of the circle

= 400cm² - 254.57cm²

= 145.43cm²

Solve the right triangle

Answers

Answer:

JK = 50; IJ = 25√3

Step-by-step explanation:

HAVE: sin ∠J = sin 30° = [tex]\frac{IK}{JK}[/tex]

=> [tex]\frac{IK}{JK}=\frac{25}{JK}=\frac{1}{2}=> JK = 25.2 = 50[/tex]

cos ∠J = cos 30° = [tex]\frac{IJ}{JK}[/tex]

=> [tex]\frac{IJ}{JK}=\frac{IJ}{50}=\frac{\sqrt{3} }{2} => IJ = \frac{\sqrt{3} }{2}.50=25\sqrt{3}[/tex]

What is the difference between these two expressions?
(14 + 9) 4
(14 + 9) 2
(14 + 9) 4 is four times as much as (14 + 9) 2
(14 + 9) 4 is three times as much as (14 + 9) 2
(14 + 9) 4 is half as much as (14 + 9) 2
(14 + 9) 4 is twice as much as (14 + 9) 2

Answers

Answer:

The answer is:

Option 4; (14+ 9) 4 is twice as much as(14 + 9) 2

Thanks

Answer:

Step-by-step explanation:

i

2a - 7 - 6a = 9
Pls help?

Answers

Step-by-step explanation:

2a - 7 - 6a = 9

- 4a - 7 = 9

- 4a = 16

a = -4

1.) Jeffjust bought a house on a triangular lot. The
sides measure 85 feet. 132 feet, and 157 feet. Is his
lot a right triangle?

Answers

Answer:176 feet

Step-by-step explanation:because you multiply all sides of the triangle

6th one....pls help me out​

Answers

Now , For 12n to end with 0, it should have 2 as well as 5 in its Prime factors to end with 0, Also to end with 5 , it requires at least a single multiple of 5 in its Prime Factors, So 12n cannot end with the digit 0 or 5.

for the $, state its worth as a percentage of $1 .$5

Answers

2.5 is the right answer

Find the measures of the exterior angles of the polygon.

Answers

Step-by-step explanation:

180 - 34 = 146

one angle is a right angle, angle across it is 146, 360 - 90 - 146 = 124

divide that by two to get the measures of the remaining two angles (62 degrees)

180 - 62 = x

118 = x

:

/ = .

-- :

, . , - , ,

PLEASE HELP ASAP!!! i’ll mark brainlyest

Answers

Answer:

B

Step-by-step explanation:

How many minutes do you have in every hour? 60 right, so that's the ratio as a fraction saying 60 minutes per hour

Explain how you calculate the constant of variation.

Answers

Answer:Since k is constant (the same for every point), we can find k when given any point by dividing the y-coordinate by the x-coordinate. For example, if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = = 3. Thus, the equation describing this direct variation is y = 3x.

Step-by-step explanation:The constant of variation means the relationship between variables does not change. When we want to identify the constant of variation for an equation, it is helpful to refer to one of the following formulas: xy = k (inverse variation) or y/x = k (direct variation), where k is the constant of variation.

Which rational number equals 0.7 ? 1 10 Flo 11​

Answers

Answer:

0.7 is a rational number... but 7/10

Step-by-step explanation:

Hope I helped!

Answer: This absolutely makes no sense  

Step-by-step explanation:

WIll mark BRAINLIST!!
I attached the screenshot

Answers

Y=|x| +3
Y=-|x+2| -1
Y=3|x-4| - 5

Find the zero of the function.
f(x) = 4x2 – 12x + 9

The zero of the function is x=

Answers

Answer:

x= 3/2

Step-by-step explanation:

I apologize if it is wrong!

Zuri quickly solved the problem and told her team, "Hey! I go it m\large \angleA = 93°, m\large \angleB = 63°, m\large \angleC = 36°. Done!" Mikaya and Olivia are suspicious. Does Zuri have the correct answer, or are Mikaya and Olivia correct to be suspicious? Explain completely. Be clear, specific, and detailed.

Answers

Answer:

Mikaya and Olivia are correct to be suspicious

Step-by-step explanation:

Sum of the angles of a triangle is always 180

But, The sum of all angles of the triangle that Zuri solved = 93 + 63 + 36 = 192 ≠ 180

So, Zuri is wrong

what is the least common multiple of 4 and 10

A. 2

B.4

C. 20

D. 40​

Answers

Answer:

20

Step-by-step explanation:

because if you find oh nvm you know what a common factor is

Answer:

C, 20

Step-by-step explanation:

The answer is 20 because the multiple of a number can not be less than the number itself so we can cross out the option 2 and 4 because they are both less than 10. We can then check if 20 and 40 fit the requirements of being a multiple of both 10 and 4. They both fit but it asks for the LEAST common multiple and because 20 is smaller than 40, we can find our answer to be C, 20.

Make & the subject of the
Formula
6x ta=5(x+t)

What is the answer please

Answers

Answer is x = 5t-a

6x+a = 5(x+t) Expand the bracket
6x+a = 5x+5t Subtract the least x’s (so 5x)
x+a = 5t Subtract a to make x the subject
x = 5t-a

Answer:

x  = 5t - a

Step-by-step explanation:

The problem deals with making a variable the subject of the formula in the expression.

 Given expression:

            6x + a = 5(x + t)

  We are to make x the subject of the formula in the expression

   

Solution:

           6x + a  = 5(x+t)

On the right hand side, expand the parentheses and distribute the term outside;

          6x + a  = 5x + 5t

   Bring the term desired to be the subject to one side by adding (-5x) to both sides;

     6x + (-5x) + a = 5x + (-5x) + 5t

           x + a  = 5t

  Now add (-a) to both sides

         x + a + (-a) = 5t + (-a)

          x  = 5t - a

PLZZZ HELP ME I WILL GIVE BRAINLY

Answers

Answer: x is for bouquets and y is for centerpieces.

Step-by-step explanation:

13x+4y=487

6x+2y=232

we start by using the first set of numbers they’ve given us

13 bouquets and 4 centerpieces equals $487.

in equation form, this is:

13b + 4c = 487

then the second set.

6 bouquets and 2 centerpieces equal $232.

in equation form, this is:

6b + 2c = 232




the system of equations is:

13b + 4c = 487
6b + 2c = 232


hope this helps!! (:

A student wrote four statements during math class. Which statement contains an error?

Answers

Answer:

C

Step-by-step explanation:

The answer is C if you multiply (a)38×18=684

(b)46×16=736 (c)54×14=756 the question is 766 miles meaning that c is the wrong answer .i hope this was helpful.

Adult tickets to a musical cost $15 and children's tickets cost $8. A total of 725 tickets were sold which brought in a total of $8775.

How many of each type of ticket were sold?

State the equation used to solve, along with both answers.

Answers

Given:

Cost of adult's ticket = $15

Cost of  children's  ticket = $8

Total tickets = 725

Total sales = $8775

To find:

The number of each type of ticket were sold.

Solution:

Let x be the number of adult tickets and y be the number of children's ticket.

Total tickets : [tex]x+y=725[/tex]         ...(i)

Total sales : [tex]15x+18y=8775[/tex]           ...(ii)

Multiply equation (i) by 15.

[tex]15x+15y=10875[/tex]         ...(iii)

Subtract (iii) from (ii),

[tex]15x+18y-15x-15y=8775-10875[/tex]

[tex]3x=-2100[/tex]

[tex]x=-700[/tex]

Putting x=-700 in (i), we get

[tex]-700+y=725[/tex]

[tex]y=725+700[/tex]

[tex]y=1425[/tex]

Therefore, the number of adult tickets is -700 and number of child tickets is 1425.

Note: The number of tickets cannot be negative. So, there must be some error in the question.

2+10= 12

True or False??

Just for points:)

Answers

Answer:

True thank you for the points

Answer:

true

Step-by-step explanation:

2+10=12

true. do i get the points?

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