3 years ago

Given x || y.

Mathematics

1 answer:

Ostrovityanka [42]3 years ago

4 0

Angles 5 and 1 are corresponding angles because the line intersects two parallel lines

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Students were asked how many books they were carrying in their backpacks. The data is shown in the frequency table. What is the

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Some students were asked how many books they were carrying in their backpacks. The data is given in this frequency table. What is the mean number of pens carried by these students in their backpacks?

Pens Frequency

0 4

1 5

2 8

3 4

4 3

5 1

A.2

B.3.5

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3 years ago

Select The correct answer. What is the simplified form of 3/7- 5/7?

dmitriy555 [2]

the answer is A -2/7

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Verify that the roots of 5x²- 6x -2 = 0 are <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%20%2B%20%5Csqrt%7B19%7D%20%7D%7B5%7D%2

Mice21 [21]

Answer:

Proof below.

Step-by-step explanation:

Quadratic Formula

$x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}\quad\textsf{when }\:ax^2+bx+c=0$

Given quadratic equation:

$5x^2-6x-2=0$

Define the variables:

a = 5
b = -6
c = -2

Substitute the defined variables into the quadratic formula and solve for x:

$\implies x=\dfrac{-(-6) \pm \sqrt{(-6)^2-4(5)(-2)}}{2(5)}$

$\implies x=\dfrac{6 \pm \sqrt{36+40}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{76}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{4 \cdot 19}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{4}\sqrt{19}}{10}$

$\implies x=\dfrac{6 \pm2\sqrt{19}}{10}$

$\implies x=\dfrac{3 \pm \sqrt{19}}{5}$

Therefore, the exact solutions to the given quadratic equation are:

$x=\dfrac{3 + \sqrt{19}}{5} \:\textsf{ and }\:x=\dfrac{3 - \sqrt{19}}{5}$

Learn more about the quadratic formula here:

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2 years ago

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suppose you have a bag of 25 marbles and 3 of the marbles are white.If you choose one without looking, what is the probability y

allochka39001 [22]

Answer:

3/25

THERE IS AN 11% CHANCE

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Step-by-step explanation:

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Solve for n 25/n = 5/8

Sveta_85 [38]

Answer:

n=40

Step-by-step explanation:

25/n=5/8

25/5=5

n/5=8

n=40

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