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Natalka [10]
3 years ago
12

How would I set this problem up?

Mathematics
1 answer:
Citrus2011 [14]3 years ago
5 0

how are you supposed to answer the question do you need to show your work

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What expression is not equivalent to this expression: 75a + 50b
nadya68 [22]
25(3a+2b)
Factor out 25 from the expression
4 0
2 years ago
1
Papessa [141]

Answer:

d = 10/72

Step-by-step explanation:

c and d vary inversely

c = k/d

Where,

k = constant of proportionality

d = 2/9 when c = 5

c = k/d

5 = k ÷ 2/9

5 = k × 9/2

5 = 9k/2

Cross product

5*2 = 9k

10 = 9k

k = 10/9

c = k/d

c = 10/9 ÷ d

c = 10/9 × 1/d

c = 10/9d

find d when c = 8

c = 10/9d

8 = 10/9d

Cross product

8*9d = 10

72d = 10

d = 10/72

8 0
3 years ago
There are 15 candidates for 4 job positions.
Veronika [31]

Answer:

32760 ways

Step-by-step explanation:

Given

Number of Candidates = 15

Job Positions = 4

Required:

Number of outcomes

This question represent selection; i.e. selecting candidates for job positions;

This question can be solved in any of the following two ways

Method 1.

The first candidate can be chosen from any of the 15 candidates

The second candidate can be chosen from any of the remaining 14 candidates

The third candidate can be chosen from any of the remaining 13 candidates

The fourth candidate can be chosen from any of the remaining 12 candidates

Total Possible Selection = 15 * 14 * 13 * 12

<em>Total Possible Selection = 32760 ways</em>

<em></em>

Method 2:

This can be solved using permutation method which goes thus;

nPr = \frac{n!}{(n-r)!}

Where n = 15 and r = 4

So;

nPr = \frac{n!}{(n-r)!} becomes

15P4 = \frac{15!}{(15-4)!}

15P4 = \frac{15!}{11!}

15P4 = \frac{15*14*13*12*11!}{11!}

15P4 = 15*14*13*12

15C4 = 32760

<em>Hence, there are 32760 ways</em>

8 0
3 years ago
A road 4 inches long on a map is 80 miles long in real life. A river is 2 ½ inches long on the map and is 50 miles long in real
jonny [76]
Not Proportional. Sorry if it’s wrong
7 0
3 years ago
At Camp Roan, 70% of the kids are taking horseback riding lessons. If 210 kids are taking horseback riding lessons, how many kid
babymother [125]

Answer:

total kids in the camp = 300

Step-by-step explanation:

let the number of kids in the camp be x

from the above situation, we get

=》70% of all kids in the camp is 210

=》

\frac{70}{100}  \times x = 210

=》

x =  210 \times  \frac{100}{70}

=》

x = 3 \times 100

=》

x = 300

4 0
3 years ago
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