Answer:
4x - 2y = -8--------equation 1
y = 2x + 4
or, -2x+y=4---------equation 2
multiply equation 2 by 2 and solving equation 1and2 we get,
4x - 2y = -8
-4x+2y=8
---------------=
impossible
Answer:
8
Step-by-step explanation:
There are two choices for each digit, and 3 digits, so 2^3 = 8 possible numbers. Here's a list:
222, 225, 252, 255
522, 525, 552, 555
Answer:
Use the scores in the box. What is the range?
a list of test scores
25
24
17
13
Step-by-step explanation:
The number of ways that he can make the fruit salad if it must contain watermelon is 35.
<h3>What is Permutation and combination?</h3>
Selection of the one object from the given samples with replacement or without replacement is called as the permutation. The selection of the items from the sample as they are different with each other.
The salad contains water melon, now we have to select 4 more fruits out of 7.
Using combination
= n! / r! (n-r)!
= 7!/ 4! (7-4)!
= 7*6*5*4! / 4! * 3*2
= 35
Hence, number of ways that he can make the fruit salad if it must contain watermelon is 35.
Learn more about Permutation and combination here:
brainly.com/question/11732255
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