Answer:
Either x+15 or x-17.
Step-by-step explanation:
(a) 48 %
(b) 74 %
Add the numbers associated with the name and then do 150 divided by that number, and then make the top number equal to 100. Whatever you did to make that top number 100 do the same thing to the bottom number.
From the ratio computed, the numbers will be 420 and 980.
<h3>How to calculate the ratio</h3>
From the information given, we are to divide 1400 in the ratio 7:3. The smaller number will be:
= 3/(3+7) × 1400
= 3/10 × 1400
= 420
The larger number will be:
= 7/10 × 1400
= 980
Therefore, the numbers will be 420 and 980.
Learn more about ratio on:
brainly.com/question/2328454
Answer:
50 and 160
Step-by-step explanation:
good
Answer:
This test batch can be chosen in 2380 ways
Step-by-step explanation:
The order in which the batteries are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
In how many ways can this test batch be chosen?
4 batteries from a set of 17. So
This test batch can be chosen in 2380 ways
