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Ivenika [448]
2 years ago
12

If 18 , x , y , -3 are in A.P then find x + y.

Mathematics
1 answer:
AleksandrR [38]2 years ago
6 0

Answer:

15

Step-by-step explanation:

If this is an arithmetic progression, then there is a common difference.

-3-18 = -21

-21/3 = -7

18 - 7 = x

x = 11

11 - 7 = y

y = 4

4 - 7 = -3

x + y

11 + 4 = 15

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– 5 | 3 z + 8| –5 = -20​
olchik [2.2K]

I'm assuming you want to solve for  z  :)

By simplifying both sides of the equation, then isolating the variable.

Exact form:

z= -5/3 , - 11/3

Mixed number form:

z=  −1  2/3  ,  −3  2/3

8 0
2 years ago
Read 2 more answers
Alarger number is 2 more than 4 times a smaller number. The larger number is also 8 more than 2 times the smaller number. 4x+2 y
Umnica [9.8K]

Answer:

the value of the smallest number is 3

Step-by-step explanation:

The computation of the value of the smaller number is shown below:

Given that

y = 4x + 2

y = 2x + 8

Now equate these two equations

4x + 2 = 2x + 8

4x - 2x = 8 - 2

2x = 6

x = 3

Hence, the value of the smallest number is 3

The same is to be considered

3 0
2 years ago
Please help!! Brainliest and Points will be given!! thank you!!
Dmitrij [34]

Answer:

12:4

Step-by-step explanation:

im sorry if its wrong because i tried.. SORRYYY

3 0
3 years ago
Read 2 more answers
A cone with a diameter of 12 inches has a volume of 640.88 cubic inches. find the height of the cone
BlackZzzverrR [31]

Answer:

The height of the cone is 17\ in

Step-by-step explanation:

we know that

The volume of a cone is equal to

V=\frac{1}{3}\pi r^{2}h

In this problem we have

r=12/2=6\ in ----> the radius is half the diameter

V=640.88\ in^{3}

assume \pi=3.14

substitute the values and solve for h

640.88=\frac{1}{3}(3.14)(6)^{2}h

h=640.88*3/((3.14)(36))=17\ in

8 0
2 years ago
How much lemon juice did Damon use in the lemonade
OverLord2011 [107]

from the picture in every cup there are 1/5 of lemon + 4/5 of water.

the cups are 20

so 1/5 * 20 = 4

4 cup of lemon

8 0
3 years ago
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