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STatiana [176]
3 years ago
11

Determine whether y varies directly with x. If so, find the constant of variation and write the equation.

Mathematics
1 answer:
Masja [62]3 years ago
5 0

Answer:

Last option

Step-by-step explanation:

As per graph,

  • this is linear function
  • x=3 ⇒ y=1
  • x=-3 ⇒ y=-1
  • x=0 ⇒ y=0

Then y= 1/3 x

so answer is yes; k=1/3 and y=1/3x

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Write an expression for the phrase.
vitfil [10]

Answer:

9+k-17

Step-by-step explanation:

sum of 9 and k

9+k

minus 17

9+k-17

5 0
2 years ago
A 10.5-gallon aquarium is 2/3 full. How many more gallons of water does it take to fill the aquarium?
Natasha_Volkova [10]
The answer is 3.5 gallons
7 0
3 years ago
Read 2 more answers
A paperweight is shaped like a triangular pyramid. The base is an equilateral triangle. Find the surface area of the paperweight
melomori [17]

Answer:

<h2>8.3 in²</h2>

Step-by-step explanation:

We have

three triangles with the base <em>b = 2 in.</em> and the height <em>h₁ = 2.2 in.</em>

one triangle with the base <em>b = 2 in. </em>and the height <em>h₂ = 1.7 in.</em>

The formula of an area of a triangle:

A=\dfrac{b\cdot h}{2}

<em>b</em><em> - base</em>

<em>h</em><em> - height</em>

Substitute:

A_1=\dfrac{(2)(2.2)}{2}=\dfrac{4.4}{2}=2.2\ in^2

A_2=\dfrac{(2)(1.7)}{2}=1.7\ in^2

S.A.=3A_1+A_2

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5 0
2 years ago
R=10(a+b) solve for b?
IrinaVladis [17]

Answer:

b=r/10 -a

Step-by-step explanation:

7 0
3 years ago
15x + 14 = 149<br><br><br>Plz solve for x
Juliette [100K]

Answer:

x = 9

Step-by-step explanation:

When doing these types of problems, the main goal is to get the variable by itself. Its kind of hard to explain with words so I will just use numbers.

15x + 14 = 149

(Subtract 14 on both sides. Remember, when you do something (Like subtracting, adding, etc.) on one side you have to do it to the other.)

15x + 14 = 149

       -14 =  -14

---------------------------

15x = 135

(Divide 15 on both sides. Since we need to use inverse operation to cancel the 15 out, we would divide 15 on both sides.)

15x/15 = 135/15

x = 9

Hope this helps :)

8 0
2 years ago
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