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Tpy6a [65]
3 years ago
8

If a«b a = 18 when b = 3, then find a when b = 5 I need help asap

Mathematics
1 answer:
vovangra [49]3 years ago
6 0

Answer:

a = 30

Step-by-step explanation:

Given the following data;

a = 18

b = 3

This is a direct proportion question.

Therefore, a is directly proportional to b.

Mathematically, a = kb

First of all we would find the constant, k;

k = a/b

k = 18/3

k = 6

Now to find the value of a when b = 5

a = kb

a = 6*5

a = 30

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What is the axis of symmetry of a parabola if its x-intercepts are -3 and 5?
ollegr [7]

Answer:

The axis of symmetry will be at 1

Step-by-step explanation:

The middle of -3 and 5 will be the axis :)

-3, -2, -1, 0, 1, 2, 3, 4, 5

-2, -1, 0, 1, 2, 3, 4

-1, 0, 1, 2, 3

0, 1, 2

1

3 0
4 years ago
Twenty percent of what number is equal to five percent of 680
jolli1 [7]

Answer:

170

Step-by-step explanation:

5/100 ×680

=34

20%=34what about 100%=?

(100×34)÷20

170

8 0
3 years ago
What is the average rate of change for the function f(x)=3(0.25)^x over the interval -2 ≤ x ≤ 0
diamong [38]
Answer:
-22.5


Explanation:
Use the average rate of change equation
f(b)-f(a) / b-a
f(b) = f(0) = 3(.25)^0 = 3
f(a) = f(-2) = 3(.25)^-2 = 48

(3-48)/ 0-(-2)
(-45) / 2
-22.5
8 0
3 years ago
Please help for number 2 :/
hoa [83]

Answer:

25.4

Step-by-step explanation:

the answer is 25.4

7 0
3 years ago
Can someone help me solve this equation?
salantis [7]

one bag contains x pencils

5 bags contain 5x pencils

after adding 3 pencils to each bag

total no of pencils = 5(x+3)

According to question,

5(x+3)=45

x+3=45/5

x+3=9

x=6

one bag contained 6 pencils before adding

3 0
2 years ago
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