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2 years ago

15

gretchen is baking pies. she needs 1/4 vup of butter fir each pie. one stick of butter os 1/2 cup. how many sticks will she need

?

1 answer:

Fed [463]2 years ago

4 0

For one pie Gretchen will need 1/2 of a stick of butter

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Who can help me with this

Flauer [41]

C - 0.15c is the same as 1c - 0.15c.
1 - 0.15 = 0.85.

Joe can also use 0.85c.

8 0

3 years ago

Find cos(2*ABC) 100POINTS

juin [17]

Answer:

$-\dfrac{7}{25}$

Step-by-step explanation:

<u>Trigonometric Identities</u>

$\cos(A \pm B)=\cos A \cos B \mp \sin A \sin B$

<u>Trigonometric ratios</u>

$\sf \sin(\theta)=\dfrac{O}{H}\quad\cos(\theta)=\dfrac{A}{H}\quad\tan(\theta)=\dfrac{O}{A}$

where:

$\theta$ is the angle
O is the side opposite the angle
A is the side adjacent the angle
H is the hypotenuse (the side opposite the right angle)

Using the trig ratio formulas for cosine and sine:

$\cos(\angle ABC)=\dfrac{3}{5}$

$\sin(\angle ABC)=\dfrac{4}{5}$

Therefore, using the trig identities and ratios:

$\begin{aligned}\implies \cos(2 \cdot \angle ABC) & = \cos(\angle ABC + \angle ABC)\\\\& = \cos (\angle ABC) \cos (\angle ABC) - \sin(\angle ABC) \sin (\angle ABC)\\\\& = \cos^2(\angle ABC)-\sin^2(\angle ABC)\\\\& = \left(\dfrac{3}{5}\right)^2-\left(\dfrac{4}{5}\right)^2\\\\& = \dfrac{3^2}{5^2}-\dfrac{4^2}{5^2}\\\\& = \dfrac{9}{25}-\dfrac{16}{25}\\\\& = \dfrac{9-16}{25}\\\\& = -\dfrac{7}{25} \end{aligned}$

7 0

1 year ago

Read 2 more answers

You paint 1/3 of a wall in 1/4 hour. At that rate, how long will it take you to paint one wall?

jeka57 [31]

It will take you 3/4 of an hour, or 45 minutes to paint 1 wall.

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2 years ago

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A large container holds 4 gallons of chocolate milk that has to be poured into 1-pint bottles. If the ratio of gallons to pints

MrMuchimi

Seen 4 gallons are being turned into pints it easy just need to do 4x8 which = 32 because 1 gallons = 8 pints!

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2 years ago

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Find the sum of-10x^2-x+6 and <br> 10x^2-5

Sindrei [870]

Answer:

=-10x^2-x+6adn

Step-by-step explanation:

4 0

3 years ago