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2 years ago

Can you please help me?

Mathematics

1 answer:

Tcecarenko [31]2 years ago

4 0

Answer:

the wronge value is -2y

Shana should have wrote -2xy

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Find the length of the third side. If necessary, round to the nearest tenth. 20 25

Fynjy0 [20]

Answer:

Step-by-step explanation:

hypotenuse (h) = 25

perpendicular (p) = 20

base (b) = ?

we know by using Pythagoras theorem we get

b = √h² - p²

= √25² - 20²

= √225

= 15

8 0

2 years ago

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How many 4/3 cup servings are there in 28/3 cups of cereal

Norma-Jean [14]

If I am right
Answer: 7
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5 0

3 years ago

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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3 0

1 year ago

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Make the following conversion. 4mm = _____ cm 0.04 0.4 40 400

eimsori [14]

Answer:

10 mm = 1 cm

4 mm = 4/10 cm

=0.4 cm

hope it helps

6 0

3 years ago

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What is the rule for the sequence with the first four terms below? 0.5, 0.25, 0, –0.25

elena55 [62]

Answer:

subtract .25 each time x-.25

Step-by-step explanation:

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3 years ago