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3 years ago

Yolanda bought .5 pounds of grapes for $3.99. Find the unit rate

Mathematics

2 answers:

scZoUnD [109]3 years ago

7 0

7.98 for one pound of grapes

Airida [17]3 years ago

3 0

Answer:

1 pounds of grapes it is 7.98$

Step-by-step explanation:

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

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Answer:

551

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Solve for k: -2k = k - 7 - 8 and explain in number form

Kamila [148]

Answer:

k = 5

Step-by-step explanation:

-2k = k - 7 - 8

Combine like terms

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3 years ago

A problem states: "There are 9 more children than parents in a room. There are 25 people in the room in all. How many children a

Dmitrij [34]

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3 years ago

19.5+24+7.5 =<br> 19.5+__+24 =<br> ___+24+___=

krek1111 [17]

See attached photo for solution

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3 years ago

Find the value of sin(a/2) if cosa= 12/13<br>

daser333 [38]

Answer: sin $\frac{a}{2}$ = ± $\frac{1}{\sqrt{26} }$

Step-by-step explanation:

We very well know that,

cos2A=1−2sin²A

⟹ sinA = ± $\sqrt{(1-} \frac{cos2A}{2} )$

As required, set A = $\frac{a}{2}$ & cos a= $\frac{12}{13}$ ,thus we get

sin $\frac{a}{2}$ =± $\sqrt{\frac{1-cos a}{2} }$

∴ sin $\frac{a}{2}$ =± $\sqrt{\frac{1-\frac{12}{13} }{2} }$ = ± $\frac{1}{\sqrt{26} }$

since ,360° < $\frac{a}{2}$ <450°

,180° < $\frac{a}{2}$ <225°

Now, we are to select the value with the correct sign. It's is obvious from the above constraints that the angle a/2 lies in the III-quadrant where 'sine' has negative value, thus the required value is negative.

hope it helped!

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3 years ago