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kupik [55]
2 years ago
10

4 cookies cost $7. At this rate, how much will 9 cookies cost?

Mathematics
1 answer:
Alja [10]2 years ago
4 0

Answer:

$15.75

you multiply the 4 cookies by 2 to get 8 ($14), then, you divide 7 by 4 to get the cost of one cookie ($1.75). add that to 14, and thus, your answer.

You might be interested in
Evaluate: 2-^4=<br> A.1/16<br> B.1/8<br> c. -8<br> D.-16
SIZIF [17.4K]

Answer:

A. 1/16

Step-by-step explanation:

{2}^{ - 4}  =  \frac{1}{ {2}^{4} }  =  \frac{1}{16}  \\

6 0
2 years ago
I need help bc I keep getting confused
umka2103 [35]

Answer:

6 3/4 (six and three fourths)

Step-by-step explanation:

First, we must turn 4 6/7 into an improper fraction, AKA 28/7. Now, you can't subtract 1/4 from 28/7, can you? So what you need to do is find the greatest common factor of 4 and 7. The GCF would be 28 (7 x 4 = 28, 4 x 7 = 28).

Now we know that the GCF is 28, we can turn the numbers into 28/28 and 1/28. But wait! We aren't done yet. Now we have to change the numerators. Since you multiplied the denominator (7) by 4 to get 28, you must now multiply 28 by 4 as well. (If you do something to the bottom, you have to do it to the top!) Because of this, we are now at 196/28.

Next, we must do the numerator of 1/28. Since we multiplied the denominator (4) by 7 to get 28, we must now multiply 1 by 7. This gets you to 7/28.

It's finally time to subtract. 196 - 7 is 184, so we are at 184/28. But hey, that's an improper fraction! You have to simplify. 184 divided by 28 is 6.75. 0.75 is 3/4 when turned into a fraction.

Mash 6 and 3/4 together, and you've got your answer! 6 3/4.

7 0
3 years ago
361 DIVIDED by 190,969
dimaraw [331]

Answer:

0.00189035916

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Urgent help please
rosijanka [135]

Let's assume the frequency of sound be f and wave length is w.

Given that, the frequency of sound varies inversely as the wavelength.

So, we can set up an equation as following:

f*w = k Where k= constant of variation.

Other information is, the frequency of a musical note is 276 cycles per second when the wavelength is 1.2m.

So, next step is to plug in f = 276 and w = 1.2 in the above equation to get the value of k.

276 * 1.2 = k

So, k = 331.2

Next step is to plug in k = 331.2 in the above equation. So,

f * w = 331.2

Now we need to find the wave length : w when frequency : f = 600.

Therefore,

600 * w = 331.2

w = \frac{331.2}{600}

So, w = 0.552

Hence, the wave length is 0.552 m.

Hope this helps you!.

5 0
2 years ago
there are 120 people attending a wedding reception. There are 16 tables. Some are round and some are square. the round table sea
alexira [117]
So I won't tell you the answer but I will give you a clue. do 120 times 16 - 8 + 6
3 0
3 years ago
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