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dsp73
3 years ago
14

Which equation(s)

Mathematics
2 answers:
GalinKa [24]3 years ago
7 0

Answer:  A) y = 7x

<u>Step-by-step explanation:</u>

In order to be a proportional relationship, the equation MUST pass through the origin (0, 0) and only contain two coordinates

A) 0 = 7(0)      --->        0 = 0 TRUE

B) 0 = 2 + 3(0) --->       0 = 2 False

C) 0 = Vz(0)    --->        Too many variables so False

D) 0 = 5 - 0    --->         0 = 5 False

Ivenika [448]3 years ago
6 0

Answer:

A, B and D

Step-by-step explanation:

What do you define as proportionality it refers to a relationship; now this relationship is defined as either directly proportional or inversely proportional.

Now take case A; y is directly proportional to X - we say y varies as X varies in a progressive or retrogressive manner .The 7 serves as a constant which comes in handy when ever an equality is been introduced to an item of proportionality.

Also in case B,

As X changes y changes- x is the sole determinant of this y and hence as X increases or decreases y does so likewise.

D ; y decreases as X increases and y increases as X decrease; here the relationship of proportionality is converse . When the graph of D is plotted using any testing values we see that the graph cuts the y axis at 5 and the X axis at 5.

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Many fundraisers ask for donations using email and text messages. A paper describes an experiment to investigate whether the pro
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Answer:

b. donations using text message

d. donations using email

Step-by-step explanation:

From the question, it is clear that the people who received these requests were assigned to two groups and these 2 were assigned treatments of if they make donations after either receiving email or text messages after which their respective proportions p1 and p2 are determined.

7 0
3 years ago
A city has a population of 380,000 people. Suppose that each year the population grows by 3.5%, What will the population be afte
Marizza181 [45]
I think it’d be 536,028 at the end of 10 years of growth. I hope this helped.
5 0
3 years ago
There are 14 boys and 9 girls in miss Keller’s music class what is the ratio of boys to girls ? And what is the ratio of girls t
11111nata11111 [884]

Answer:

Step-by-step explanation:

if there are 14 boys to 9 girls in a class the ratio would be

14:9

6 0
3 years ago
Read 2 more answers
PLEASE PLEASE PLEASE HELP!!
Marta_Voda [28]
Okay I'll try to show it step by step

Step 1. So first you need to recognise that the diagram is a right angled triangle, with the right angle being at the bottom. This means we can do Pythagoras' Theorem.

Step 2. Now that you know you can use Pythagoras' Theorem, you can apply it. If you don't know, the theorem is a² + b² = c², with, in this case, a being 5 and b being 8. This means we can do 5² + 8² = 25 + 64 = 89.

Step 3. From the previous step, we now know that the length of the side including x is √89, and because we know that part of this side is 3, if we subtract 3 from √89 we get the value of x, so: √89 - 3 = 9.434 - 3 = 6.434, which is your answer.

I hope this helps!
5 0
3 years ago
HELP ASAP !!!MATH!!!<br><br> ATTACHED FILE BELOW
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Yes the correct answer is D. Hope this helps :)
6 0
3 years ago
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