Are the numbers 4/7 and 10/17.5 a proportion? Same question for the following....

Mathematics

2 answers:

zhenek [66]3 years ago

8 0

Proportional:

4/7 and 10/17.5
2/3 and 9/12
18/8 and 9/4

NOT proportional:

3/8 and 6/141
7/5 and 27/50

Serjik [45]3 years ago

6 0

Answer:

previous answer is right -

Step-by-step explanation:

2/3 and 9/12 is not proportional

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2(3-8y)= Apply the distributive property to create an equivalent expression.

umka2103 [35]

Answer:

$6-16y$

Step-by-step explanation:

$2(3-8y)\\\\\boxed{6-16y}\\\\\\\left \{ {{2*3=6} \atop {2*-8y=-16y}} \right.$

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4 0

3 years ago

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Alexxx [7]

Answer:

Answer is option d

Answer is given below with explanations.

Step-by-step explanation:

We can prove that the two triangles are similar.

We can prove this using AA criterion of similarity.

In triangle DNC and triangle QSC

Vertically opposite angles are equal.

Then Angle QCS = Angle DCN

Two parallel lines cut by a transversal line make the alternate angles are equal.

Then Angle NDC = Angle CQS

By AA criterion of similarity

TRIANGLE DNC ~ TRIANGLE QSC

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THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION. 

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3 years ago

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Y is directly proportional to x when y=30, x=6

rosijanka [135]

Answer:

a) y = 5x

b) y = 60

Step-by-step explanation:

Since, y is directly proportional to x when y=30, x=6

$\therefore \: y \: \alpha \: \: x \\ \therefore \: y = kx ...(1) \\ plug \: y = 30 \: and \: x = 6 \: in \: eq \: (1)\\ 30 = k \times 6 \\ k = \frac{30}{6} \\ k = 5 \\ plug \: k = 5 \: in \: (1) \\ y = 5x....(2) \: (required \: equation) \\ plug \: x = 12 \: in \: eq \: (2) \\ y = 5 \times 12 \\ \huge \red{ \boxed{y = 60}}$