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3 years ago

Which statements are always true? Check all that apply.

Mathematics

2 answers:

Ann [662]3 years ago

8 0

Answer:

A rectangle has four right angles, A triangle has 3 sides, A square has 4 equal sides

Step-by-step explanation:

mamaluj [8]3 years ago

4 0

A rectangle has four right angles, A triangle has 3 sides, A square has 4 equal sides

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Ellie earned $18.40 by babysitting. She worked 2.3 hours. How much money was Ellie paid per hour?

Alona [7]

18.40/2.3 = 8
She earned $8.00 per hour.

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3 years ago

Read 2 more answers

Match each quadratic equation with its solution set.

Marianna [84]

Answer:

( 8 , - 8) => x² - 55 = 9

( 4 , - 4) => 2x² - 32 = 0

(5 , - 5) => 4x² - 100 = 0

(11 , - 11) => x² - 140 = -19

( 3, - 3) => 2x² - 18 = 0

Step-by-step explanation:

$2x^2 - 32 = 0\\\\2(x^2 - 16 ) = 0 \\\\x^2 - 16 = 0 \\\\x^2 = 16 \\\\x = \sqrt {16 } = \pm 4$

x = ( 4 , - 4)

$4x^2 - 100 = 0 \\\\4(x^2 - 25 ) = 0\\\\x^2 - 25 = 0 \\\\x^2 = 25 \\\\x= \sqrt{25} = \pm 5$

x = ( 5 , - 5 )

$x^2 - 55 = 9 \\\\x^2 = 9 +55\\\\x^2 = 64\\\\x = \sqrt{64} = \pm 8$

x= ( 8 , - 8)

$x^2 - 140 = - 19\\\\x^2 = -19 + 140 \\\\x^2 = 121 \\\\x= \sqrt{121} = \pm 11$

x = ( 11 , -11)

$2x^2 - 18 = 0\\\\2(x^2 - 9) = 0\\\\x^2- 9 = 0 \\\\x^2 = 9 \\\\x = \sqrt9 = \pm 3$

x = ( 3 , - 3)

8 0

3 years ago

Read 2 more answers

F(x) = 3x² - 6x +5 find x intercepts

8090 [49]

Answer: there aren't any x intercepts.

Step-by-step explanation:

The function doesn't touch the x-axis only the y-axis giving that there aren't any x intercepts. The y intercepts is (0,5).

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3 years ago

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Ksju [112]

Answer:

it's A

Step-by-step explanation:

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3 years ago

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