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d1i1m1o1n [39]
3 years ago
8

Pls help me ASAP I have other homework to do and I don’t have time for this. It also detects if it’s right or wrong:(

Mathematics
2 answers:
Tems11 [23]3 years ago
7 0
The answer is B. 5 hours.
Nikolay [14]3 years ago
5 0

Answer:

5 hours

Step-by-step explanation:

(450-200)÷50=5

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Which equation represents a proportional relationship between the x and y values?
Airida [17]

Answer:

D) y=-2x

Step-by-step explanation:

A linear relationship is of the form y=mx+b, where, m is the slope and b is the y-intercept (constant).

For a proportional relationship, the value of b=0 and thus it is of the form y=mx

Let us check each option and express it in the form above.

Option A:

y=2

This can be written as y=0x+2. So, b\ne 0.

Since, b \ne 0, therefore, it is not a proportional relationship.

Option B:

y=14x+1

Here, b=1. So, b\ne 0.

Since, b \ne 0, therefore, it is not a proportional relationship.  

Option C:

y=x-4

Here, b=-4. So, b\ne 0.

Since, b \ne 0, therefore, it is not a proportional relationship.  

Option D:

y=-2x

This can be rewritten as y=-2x+0

There is no y-intercept on this. So, b=0

Since,b = 0, therefore, it is a proportional relationship.

Therefore, the correct option is D.

8 0
3 years ago
Read 2 more answers
*BRAINLIEST* (Easy Question: Warm UP) Find a positive solution to each equation: x2 = 9/4?
prisoha [69]

Answer:

<u>A</u>

Step-by-step explanation:

<u>Given</u>

  • x² = 9/4

<u>Solving</u>

  • Take the square root on both sides
  • √x² = √9/4
  • ⇒ x = 3/2
  • <u>Option A is the correct option.</u>
7 0
2 years ago
Read 2 more answers
Площадь параллелограмма сторона которого равна 4,7 см а проведённая к ней высота 3,1​
Finger [1]

Answer:

im sorry but i dont understand

5 0
3 years ago
Janson has quarters and dimes in his pocket. he counted 42 coins that added up to $7.50
vlada-n [284]

Answer:

28 quarters and 5 dimes

7(Q)+5(D)

7(4)+5(10)

28Q      50D          Q=quarters  D=dimes

it would be more efficient to do the substitution method bc its faster and easier

7 0
2 years ago
Read 2 more answers
What equation represents the model shown below?
g100num [7]

Given:

The algebra tiles of an equation.

To find:

The equation represented by the given model.

Solution:

On the left side of the model we have 4 tiles of (-x) and 3 tiles of (-1). So,

LHS=(-x)+(-x)+(-x)+(-x)+(-1)+(-1)+(-1)

LHS=-4x+(-3)

LHS=-4x-3

On the right side of the model we have 8 tiles of (-1). So,

RHS=(-1)+(-1)+(-1)+(-1)+(-1)+(-1)+(-1)+(-1)

RHS=-8

Now, equate the LHS and RHS to get the equation.

-4x-3=-8

Therefore, the equation for the given model is -4x-3=-8.

7 0
2 years ago
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