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3 years ago

What does proportional relationship means?

Mathematics

1 answer:

monitta3 years ago

5 0

Answer:

A proportional relationship is one in which two quantities vary directly with each other. We say the variable y varies directly as x if: y = k x. for some constant k , called the constant of proportionality .

Step-by-step explanation:

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Which of the following statements is true of a transversal?

kolbaska11 [484]

Answer:

The answer here is the third box(C)

I hope this helps you!

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3 years ago

The order pairs (2,-21)and (5,45) solutions which of the following equations

brilliants [131]

45-21 over 5-2 which would be 4 because it shows it

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3 years ago

Determine the zeroes of 10x2−5=35

OLEGan [10]

Answer:

x = +2, x = -2

Step-by-step explanation:

The equation to solve in this problem is

$10x^2-5=35$

The first step we do is to subtract 35 on both sides of the equation, so we get:

$10x^2-5-35=0\\10x^2-40=0$

Now we simplify the equation by dividing both terms by 10:

$\frac{10x^2-40}{10}=0\\x^2-4=0$

Now we observe that the term on the left is the difference between two squares, so it can be rewritten using the property:

$a^2-b^2=(a+b)(a-b)$

Where here,

a = x

b = 2

So we can rewrite the equation as:

$x^2-4=0\\(x+2)(x-2)=0$

And this equation is zero when either one of the two factors is zero, so the two solutions are:

$x+2=0\rightarrow x=-2\\x-2=0 \rightarrow x=+2$

5 0

3 years ago

ABC is a right triangle. If AB = 3 and AC = 7, find BC. Leave your answer in simplest radical form.

aivan3 [116]

1. Suppose that BC is hypotenuse, then by Pythagorean theorem:
$BC^2=AC^2+AB^2, \\ BC^2=3^2+7^2, \\ BC^2=9+49, \\ BC^2=58, \\ BC= \sqrt{58}$ .
2. If BC is not hypotenuse, then BC is a leg and AC is hypotenuse (because AC>AB). Hence by Pythagorean theorem:
$AC^2=AB^2+BC^2, \\ 7^2=3^2+BC^2, \\ BC^2=49-9, \\ BC^2=40, \\ BC= \sqrt{40} =2 \sqrt{x10}$ .

8 0

3 years ago

Read 2 more answers

NEED HELP WILL GIVE BRAINLIST WILL REPORT FAKE ANSWERS

emmainna [20.7K]

Answer:

1. Allans brother is 19

2. $18.75

Step-by-step explanation:

1. 11 x 2= 22 - 3= 19

2. $1.05 x 15= $15.75

$15.75 + $3 = $18.75

3 0

3 years ago