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elena-14-01-66 [18.8K]
3 years ago
10

Christen sells boxes of cookies for $4 each. Rafael sells boxes of cookies for $7 each. Each of them sold the same dollar amount

. It was the smallest dollar amount for which this was possible. What was the dollar amount each of them sold? How many boxes did Christen sell?
Mathematics
2 answers:
otez555 [7]3 years ago
7 0

Answer:

28 dollars, Christen sell 7 boxes and Rafael sell 4 boxes.

Step-by-step explanation:

We can make a list to see the rate of amount and dollars they got:

Boxes:     1,    2,  3,  4,   5,    6,    7,   8

Christen: 4,   8, 12, 16, 20, 24, 28, 32  ($)

Rafael:     7, 14,  21, 28, 35, 42, 49, 56 ($)

So the first one in common is 28 dollars, and just match them to the boxes, that's it.

KATRIN_1 [288]3 years ago
3 0

Answer:

28$ and christen sold 7 boxes while Rafael sold 4

Step-by-step explanation:

lower common multiple so take 4 x 7 = 28 as then take the 28 and divide by how much Christen gets a box which is 4 and 28 divided by 4 is 7

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If angle 6 is 25 degrees how much is 7
Sindrei [870]

Given:

Angle 6 = 25 degrees

To Find:

The value of Angle 7

Solution:

We know that,

the value of Angle 6 is equal to 25 Degrees

Since Angle 6 and Angle 7 together comprise of a Straight Line, this means that they are Supplementary Angles.

Therefore,

Angle 6 + Angle 7 = 180 degrees

This implies that,

25 degrees + Angle 7 = 180 degrees.     (since Angle 6 = 25 Degrees)  

Angle 7 = (180-25) degrees

Thus ,

Angle 7 = 155 degrees

Hence, Angle 7 is  155 degrees (Option 1)

5 0
1 year ago
Leslie ran 4 1/2 laps around the park in 3/4 hour. Kayla ran 3 1/2 laps around the same park in the same amount of time. How man
Arte-miy333 [17]
Leslie:
h= hours
3/4h=4 1/2 laps
divide both sides by 3/4 or .75
1 hour = 6 laps
Kayla:
3/4h= 3 1/2 laps
divide both sides by 3/4
1 hour = 4 2/3 laps
Leslie can do C
1_ 1/3 more laps in an hour than Kayla
5 0
3 years ago
United Blood Services is a blood bank that serves more than 500 hospitals in 18 states. According to their website, a person wit
Anna11 [10]

Answer:

a) 0.06 = 6% probability that a person has both type O blood and the Rh- factor.

b) 0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.

Step-by-step explanation:

I am going to solve this question treating these events as Venn probabilities.

I am going to say that:

Event A: Person has type A blood.

Event B: Person has Rh- factor.

43% of people have type O blood

This means that P(A) = 0.43

15% of people have Rh- factor

This means that P(B) = 0.15

52% of people have type O or Rh- factor.

This means that P(A \cup B) = 0.52

a. Find the probability that a person has both type O blood and the Rh- factor.

This is

P(A \cap B) = P(A) + P(B) - P(A \cup B)

With what we have

P(A \cap B) = 0.43 + 0.15 - 0.52 = 0.06

0.06 = 6% probability that a person has both type O blood and the Rh- factor.

b. Find the probability that a person does NOT have both type O blood and the Rh- factor.

1 - 0.06 = 0.94

0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.

6 0
2 years ago
X − 5 = 17<br> A) x = 22 <br> B) x = 12 <br> C) x = 3.4 <br> D) x = -12
Maksim231197 [3]
A is the correct answer coz if you substitute 22 in the place of X-5 the answer will be 17
8 0
3 years ago
Numbers expressed using exponents are called .
N76 [4]

Answer:

numbers expressed using exponents are called powers

4 0
2 years ago
Read 2 more answers
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