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Eva8 [605]
3 years ago
13

Katherine and her children went into a bakery and where they sell cupcakes for $2.50 each and donuts for $1.25 each. Katherine h

as $25 to spend and must buy at least 14 cupcakes and donuts altogether. If xx represents the number of cupcakes purchased and yy represents the number of donuts purchased, write and solve a system of inequalities graphically and determine one possible solution.
Mathematics
1 answer:
yan [13]3 years ago
6 0

Answer:the ration to x and b that equals c is about 3 dollars

Step-by-step explanation:

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Show that if u+v and u-v are orthognal, then the vectors u and v must have the same length.
pashok25 [27]

Answer with Step-by-step explanation:

We are given that

u+ v and u-v are orthogonal

We have to prove that u and v must have the same length.

When two vector a and b are orthogonal then

a\cdot b=0

By using the property

(u+v)\cdot (u-v)=0

We know that

(a+b)\cdot (a-b)=\mid a\mid^2-\mid b\mid^2

\mid u\mid ^2-\mid v\mid^2=0

\mid u\mid^2=\mid v\mid^2

Magnitude is always positive

When power of base on both sides are equal then base will be equal

Therefore,

\mid u\mid=\mid v\mid

Hence, the length of vectors u and v must have the same length.

5 0
4 years ago
BRAINLIEST TO CORRECT
Aleks04 [339]

Answer:

pervious prices is $4.8 per pound

Step-by-step explanation:

current price is $6 per pound

previous price is 20% less than current price

20% of 6

6 × 20 ÷ 100 = $1.2

$6 - $1.2 = $4.8

4 0
3 years ago
Read 2 more answers
Can 18 in, 6 in, 13 in form a triangle
Pavel [41]

Answer:

can bcz triangle has 3 sides here 3 cm are there

5 0
3 years ago
√72<br> Plzzzzzzzz help<br> I have 3 more <br> √619<br> √77<br> √89
andriy [413]

Answer:

\sqrt{72} =8.48528\\\sqrt{619} =24.8797\\\sqrt{77} =8.77496\\\sqrt{89} =9.43398

Step-by-step explanation:

hope this helps :)

6 0
3 years ago
Triangles ABC and DEF are similar <br><br><br>find the length of segment DF​
asambeis [7]

Answer:

2.68

Step-by-step explanation:

In similar triangles, the corresponding sides are in same ratio

\frac{DF}{AC} =\frac{DE}{AB}\\\\\frac{DF}{4} = \frac{1.34}{2}\\\\ DF = \frac{1.34}{2}*4\\\\DF = 1.34 * 2 \\\\DF = 2.68

8 0
3 years ago
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