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2 years ago

PLZ HELP!!

Mathematics

1 answer:

ludmilkaskok [199]2 years ago

3 0

9514 1404 393

Answer:

y = -3x^2 -9x +30

Step-by-step explanation:

When a polynomial has a zero at x=p, it has a factor of (x -p). The factors of your quadratic are ...

f(x) = (x +5)(x -2)

At the point x=3, the value of this product is ...

f(3) = (3 +5)(3 -2) = (8)(1) = 8

In order for that value to be -24, it needs to be multiplied by a scale factor of -3. The quadratic you want is ...

y = -3(x +5)(x -2)

y = -3x^2 -9x +30 . . . . . standard form

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Is this standard form 25x - 80y = 160

kvv77 [185]

Answer:

true

Step-by-step explanation:

because the variable terms are in the left side of the equation and everything else in right side.

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2 years ago

Jackson has a rope 1 foot 8 inches long. He cuts it into 4 equal pieces. How many inches long is each piece?

mote1985 [20]

1 foot 8 inches.

1 foot = 12 inches.

1 foot 8 inches = 1 foot + 8 inches = 12 inches + 8 inches = 20 inches.

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= 20 / 4

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Each piece would be 5 inches long.

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3 years ago

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2 years ago

Find the missing side. Round to the nearest tenth.

Firdavs [7]

Answer: 23.7

Step-by-step explanation:

Let's calculate the acute angle at the base of the triangle:

180° - 90° - 40° = 50°

Find side x:

$\dfrac{sin \: 90^{o} }{31} =\dfrac{sin \: 50^{o} }{x}\\\\sin \: 90^{o} \cdot x=sin \: 50^{o} \cdot 31\\\\sin \: 90^{o} =1\\sin \: 50^{o} \approx 0.766\\1 \cdot x =0.766 \cdot 31\\x=23.746\\23.746 \approx 23.7$

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2 years ago

The lines on a 2-cup liquid measuring cup divide each cup into eighths. If you measure 1 3/4 cups of water, between which two qu

masya89 [10]

Answer:

1 3/4 cups is between the 13th and 15th lines from the bottom.

Step-by-step explanation:

The bottom of the cup has no line and corresponds to 0 eights.

1st line up: 1/8 cup

2nd line up: 2/8 cup this is also called 1/4 cup

3rd line up: 3/8 cup

4th line up: 4/8 cup this is also called 1/2 cup

5th line up: 5/8 cup

6th line up: 6/8 cup this is also called 3/4 cup

7th line up: 7/8 cup

8th line up: 8/8 cup this is also called 1 cup

9th line up: 9/8 cup

10th line up: 10/8 cup this is also called 1 1/4 cup

11th line up: 1 3/8 cup

12th line up: 1 4/8 cup this is also called 1 1/2 cup

13th line up: 1 5/8 cup

14th line up: 1 6/8 cup this is also called 1 3/4 cup

15th line up: 1 7/8 cup

16th line up: 1 8/8 cup this is also called 2 cups

1 3/4 cups is between the 13th and 15th lines from the bottom.

7 0

3 years ago