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ioda
4 years ago
14

Please help. i need to pass.

Mathematics
1 answer:
FrozenT [24]4 years ago
5 0
Plug 8 for y

8 = 2x + 4

Subtract 4

4 = 2x

Divide by 2

x = 2

Plug 16 for y

16 = 2x + 4

Subtract by 4

12 = 2x

Divide by 2

x = 6

Substitute 20 for y

20 = 2x + 4

16 = 2x

x = 8

Substitute 22 for y

22 = 2x + 4

18 = 2x

9 = x

So the values are 2, 6, 8, 9
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2. Use the graph to write an equation for the parabola. (1 point)
Helga [31]

Answer:

B. y=\frac{x^{2} }{9}

Step-by-step explanation:

5 0
3 years ago
How do u go pro at skateboarding? Also why is my baseball cup so uncomfortable?
dimulka [17.4K]

Answer:

You can probably go pro at skating by just practicing a ton and learning new skills and tricks that separates you from other skaters. Its not very hard to be a "pro", its hard to make money off of skating because of the lack of audience it has. Also, I assume your baseball cap is uncomfortable because of the material or your hair.

Hope that helps

8 0
3 years ago
Nuts Galore sells a trail mix containing dried banana chips, roasted almonds, and chocolate chips that sells for $6.52 per pound
KengaRu [80]

Answer:

x = 28 ----- Banana

y = 54 ----- Almonds

z = 18 ---- Chocolate

Step-by-step explanation:

Let

x \to banana

y \to almonds

z \to chocolate

So, we have:

x + y + z = 100 --- total used

4x + 8y + 6z = 652 -- i.e. 6.52 * 100 --- total sales from 100 pounds

y = 3z

Required

The number of pounds of each (i.e. x, y and z)

Substitute y = 3z in x + y + z = 100

x + 3z + z = 100

x + 4z = 100

Make x the subject

x = 100 - 4z

Substitute y = 3z in 4x + 8y + 6z = 652

4x + 8 * 3z + 6z = 652

4x + 24z + 6z = 652

4x + 30z = 652

Substitute x = 100 - 4z

4(100 - 4z) + 30z = 652

400 - 16z + 30z = 652

Collect like terms

- 16z + 30z = 652-400

14z = 252

Divide by 14

z = 18

Substitute z = 18 in x = 100 - 4z

x = 100 - 4 * 18

x = 100 - 72

x = 28

To calculate y, we have:

y = 3z

y = 3 * 18

y = 54

6 0
3 years ago
Equation please help me solve 1:4 = 3:x
Aliun [14]
The answer is X = 12 because 3 is 1x3 so 4x3 = 12
7 0
4 years ago
How do you solve Ratios and Proportions in 7th grade math?
Digiron [165]
There's a lot of different kinds. But they're all pretty simple and can be explained rather easy. 

A ratio and a proportion are really the same thing but in different ways. For example, say I have two lines. A big line and a small line. The big line is 10 feet tall, and the little line is 5 feet  tall. We can say they are proportionate to each other because they have a ratio of 10/5 which can be simplified to 2.They are proportionate and the taller line is 2 times higher. 

I hope this makes sense. 
5 0
3 years ago
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