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Oxana [17]
3 years ago
11

The time is took Tayna to complete different sets of math problems varied directly with the number of problems in the set Tayna'

s data is shown in the table. If x = time, and y = the number of problems in the set, which equation models Tayna's direct variation
A. y = 12x
B. y = 1.2x
C. y = x divided by 12
D. y = x divided by 1.2
Mathematics
1 answer:
Vsevolod [243]3 years ago
3 0

Answer:

C

Step-by-step explanation:

time is directly proportional to the number of problems in the set

=> x = ky

k = constant of proportionality

when k = 12

x = 12y

by making y the subject, we divide both sides by 12

=> y = x/12

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Lady bird [3.3K]

Answer:

Option B y=3x -2 is the answer.

Step-by-step explanation:

An easy way to quickly figure it out is to find the y-intercept of the graph. So, from the graph you can see that the line cuts the y axis at -2. Therefore, as per the equation of a straight line, y=mx+c

option B shows that the y intercept is -2. Thus option B is the answer to this question.

7 0
3 years ago
Plsss help!!!!!!! #3 #4​
AVprozaik [17]

Answer:

3) 162 ft²   ||  4) 38.25 mm²

Step-by-step explanation:

3)

area of triangle = 0.5 * base * height

                          = 0.5 * 27 *  12

                          = 162 ft²

4) area of triangle = 0.5 * base * height

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3 0
2 years ago
Read 2 more answers
(6+3)4 I don't understand what it means I really need some help​
Over [174]

Answer:

36

Step-by-step explanation:

Hullo :D

If you're having trouble understanding, you might not understand the Order of Operations.

P - Parenthesis. Solve what's inside the Parenthesis first

E - Exponents. Solve for Exponents second.

M - Multiply. Multiply numbers third. (left - to - right with division, too)

D - Divide. Divide fourth. It is interchangeable with multiplication, as well.

A - Addition. Add fifth.

S - Subtract sixth. It is interchangeable with Addition, as well.

With that in mind, all we need to do is identify these types in the equation:

(6+3)4

We see parenthesis. We will solve them first according to the Order of Operations:

6 + 3 = 9.

(9)4

We see multiplication. We solve them next according to the Order of Operations:

9 × 4 = 36.

Thus, the final answer is \boxed{36}.

Hope this helps!

4 0
3 years ago
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solniwko [45]
24 ÷12 → 2

60 ÷ 12 → 5 

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8 0
3 years ago
Knitting: You are knitting a blanket. You want the area of the blanket to be 24ft^2. You want the length of the blanket to be 2
andriy [413]
You can use factors to solve.  Determine all the factor pairs of 24, find the two that are two numbers apart.
1, 24 X
2, 12 X
3, 8 X
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Algebraic way to solve using Quadratics:
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w + 6 = 0  and w - 4 = 0    Set each factor equal to 0.

So w= -6 or w = 4 ... -6 makes no sense for a length!  So the width must be 4 and the length will be 4 + 2, which is 6.

5 0
3 years ago
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