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taurus [48]
2 years ago
10

If f(x) =ax+b ,f(-3)=-4 and f(3)=2, find the value of a and b please help​

Mathematics
1 answer:
galina1969 [7]2 years ago
8 0

Answer:

a = -⅓

b = 3

Step-by-step explanation:

-3a + b = 4

3a + b = 2

b = 4 + 3a = 2 - 3a

6a = -2

a = -2/6

a = - ⅓

-> b = 4 + 3(-⅓)

b = 4 - 1

b = 3

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3 years ago
What is the value of the expression when b = 3? 4b to the 4 power
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3 years ago
Evaluate the function h(x)= 2x-1 find h(4)
prohojiy [21]

Answer: h(4) = 7

Step-by-step explanation:

Given h(x)= 2x-1

Find h(4)

Solution:

Substitute x = 4 into the equation

h (4) = 2 (4) - 1

h (4) = 8 - 1

h (4) = 7

5 0
3 years ago
At Southside Middle School, 20% of the students play an instrument. There are 305 students. How many students play an instrument
RoseWind [281]

Answer:

61 Students.

Step-by-step explanation:

So you need to find 20% of 305. You can do this by dividing by 5.

305 divided by 5 equals 61.

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4 0
2 years ago
Read 2 more answers
4) Adult tickets for the evening show at XD Theater are $11 and children's tickets are $Belf the theater seats 250 people, how m
kozerog [31]

Omitted value: The price of children ticket was omitted in the question, so i used $8 to solve. You can input the correct value and solve the same way following the steps.

Answer: 100 adult tickets  must be sold.

Step-by-step explanation:

step 1

let  x represent Adults

AND y represent children

Since the theater seats 250 people we have that

x+y = 250..... equation 1

Also price for Adult ticket = $11

and  price children ticket =$8

With total sales at $2,300, we have that

11x + 8y= 2300----- equation 2

Step 2

Making y subject in equation 1

' x+y = 250

y= 250-x

Putting y= 250- x in equation 2

11x + 8(250-x)= 2300

11x +2000-8x= 2300

11x -8x = 2300-2000

3x= 300

x 300/3

x= 100.

To find y

 x+y = 250

100+y=250

y=250-100

y=150

Therefore 100 adult tickets and 150 children tickets must be sold to get a total sales of $2,300

5 0
3 years ago
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