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erma4kov [3.2K]
3 years ago
12

Please Please help me with this answer

Mathematics
2 answers:
tatyana61 [14]3 years ago
4 0

3 bowls of chicken

7 bowls of tomato.

3+7=10

7-3=4

bagirrra123 [75]3 years ago
3 0

Let's give our numbers names: we'll call the number of bowls of tomato soup t and the number of bowls of chicken soup c.

We know from the question that c is 4 less than t, so we can write that fact as the equation

c = t - 4

We <em>also</em> know that, when we add both of the amounts together, we get 10, so that

c + t = 10

We can then use the first equation to replace c with t - 4:

(t - 4) + t = 10

or, rearranging:

2t - 4 = 10

This means that if we <em>double the number of tomato bowls and subtract 4, we arrive at 10</em>. To find what exactly t is, then, we can go the other way around. If we <em>add </em>4, we see that 2t = 14, and if we <em>halve </em>2t, we find that t = 7, so the cafeteria sold 7 bowls of tomato soup.

Checking our work, we see that c = 7 - 4 = 3, and 7 + 3 = 10, so this answer is consistent with what we've been given.

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7

Step-by-step explanation:

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The answer would be v = -1
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A man drove his car at 80km per hr for 1 and a quarter hrs .He rested for 45mins and then covered 240km, at the same time. Calcu
prisoha [69]

Answer:

Probably 128 km/h, but maybe 98.5 km/h. See below.

Step-by-step explanation:

What does "at the same time" mean?

If it means that he covered the 240 km in the same time as he convered the 80 km, then this is how you solve it:

80 km in 1.25 hour

240 km in 1.25 hour

Total distance: 80 km + 240 km = 320 km

Total time: 1.25 hour + 1.25 hour = 2.5 hour

average speed = (total distance)/(total time) = 320 km / 2.5 hour = 128 km/h

If it means he covered the 240 km in the same time he covered the 80 km plus the rest, then this is how you solve it:

80 km in 1.25 hour

240 km in 1.25 hour + 45 min = 240 km in 1.25 houir + 0.75 hour = 240 km in 2 hour

Total distance: 80 km + 240 km = 320 km

Total time: 1.25 hour + 2 hour = 3.25 hour

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3 0
2 years ago
A group consists of 6 men and 5 women. Five people are selected to attend a conference. In how many ways can 5 people be selecte
cluponka [151]

Answer:

462

6

1.2%

Step-by-step explanation:

Since the questions are combinations, we must apply the combination formula, which is as follows:

n C r = (n!) / (r! (n-r)!)

Because there are 6 men and 5 women, there are a total of 11 people.

Thus:

n = 11

In the first question in how many ways can 5 people be selected from this group of 11, r = 5.

Replacing in the formula:

11 C 5 = (11!) / (5! * (11-5)!)

11 C 5 = (11!) / (5! * 6!)

11 C 5 = 462

In the second question, in how many ways can 5 men be selected from the 6 men, here n = 6 and r = 5, replacing we are left with:

6 C 5 = (6!) / (5! * (6-5)!)

6 C 5 = (6!) / (5! * 1!)

6 C 5 = 6

In the last question of what is the probability that the selected group is all men, we have that it is the combination of the two previous questions. Since the total would be part A it would be the total of the combinations of choosing 5 of 11 people and part B of the 6 men that there are the combinations of choosing 5.

Divide the two values ​​from parts A and B to get ...

(result from part B) / (result from part A) = (# of ways to pick 5 men) / (# of ways to pick 5 people)

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a = -24

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