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3 years ago

Lines A, B, and C show proportional relationships. Which line has a constant of proportionality between y and x of 4/3

Mathematics

2 answers:

Drupady [299]3 years ago

8 0

Answer:

Line B

Give Brainliest plz

Charra [1.4K]3 years ago

8 0

line b would be your answer Give person on top Brainliest^^^

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Solve this equation using all three methods 4x^ = 9

Bumek [7]

Answer:

$x=-\frac{3}{2}, x=\frac{3}{2}$

Step-by-step explanation:

(1) To solve by factoring,

Given equation: $4 x^{2}=9$

Subtract 9 from both sides of the equation.

$\begin{aligned}&4 x^{2}-9=9-9\\&4 x^{2}-9=0\\&(2 x)^{2}-3^{2}=0\\&(2 x-3)(2 x+3)=0\end{aligned}$

Using zero factor principle, $2 x-3=0,2 x+3=0$

The solutions are $x=-\frac{3}{2}, x=\frac{3}{2}$ .

(2) To solve by complete the square ,

Given $4 x^{2}=9$

Divide both sides of the equation by 4.

$\frac{4 x^{2}}{4}=\frac{9}{4}$

$\Rightarrow x^{2}=\frac{9}{4}$

Square root on both sides.

$\Rightarrow x=\pm \frac{3}{2}$

$x=-\frac{3}{2}, x=\frac{3}{2}$

(3) To solve by quadratic formula,

$4 x^{2}-9=0$

Here, a = 4, b = 0, c = –9

Quadratic formula, $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

$x=\frac{-0 \pm \sqrt{0^{2}-4 \times 4 \times(-9)}}{2 \times 4}$

$\begin{aligned}&\Rightarrow x=\frac{\pm \sqrt{144}}{8}\\&\Rightarrow x=\pm \frac{3}{2}\\&\Rightarrow x=\frac{3}{2}, x=-\frac{3}{2}\end{aligned}$

3 0

3 years ago

Hi does anyone have the answer for this? 100 points if answered :))

Hitman42 [59]

Answer:

15 feet

Step-by-step explanation:

This is already factored for the zeros of the quadratic. If x - 5 = 0 and x - 20 = 0 then x = 5 and 20. The ball was kicked 5 feet out and landed at 20 feet down the field. The difference is 15 feet. That's how far the ball traveled from its initial position on the ground to its landing place.

So 15 feet from where it was kicked.

7 0

3 years ago

What's the difference between 1 fifth of 10 and 5 times 10

Pachacha [2.7K]

1 fifth of ten is 2 where as 5×10 =50

8 0

3 years ago

What is the lowest common multiple of 12 and 15?

Mice21 [21]

Answer:

Step-by-step explanation:

LCM of 12 and 15

First Method: Listing the multiples

First, write the common multiples of all three numbers.

Common Multiples of 12: 12,24,36,48,60,72,….

Common Multiples of 15: 15, 30, 45, 60, 75,…

Hence, the Least common multiple of 12 and 15 is 60.

Second method: By prime factorisation

Let us write the prime factors of the two numbers individually.

12 = 2 x 2 x 3

15= 3 x 5

Multiply each factor the maximum number of times it occurs in either number

= 2 X 2 X 3 X 5

= 60

LCM of 12 and 15= 60

Answer

LCM of 12 and 15= 60

Hope this helps :)

8 0

3 years ago

Read 2 more answers

there are 15 students in a homeroom how many different ways can they be chosen to be elected president vice president or treasur

Serjik [45]

Answer: 455 different ways

(15 x 14 x 13) / (3 x 2 x 1) = 455

4 0

3 years ago