Answer:how
Step-by-step explanation:what is this it’s too hard I’m sorry man
1400+ 900x= 4100
Subtract 1400 from each side
900x= 2700
Divide each side by 900
X= 3
It needs to eat 3 mosquitos each hour
The answer is -12
Explanation: When adding a negative and positive number you just change the addition sign into a subtraction sign and subtract like how you usually buy keep the sign of the higher digit which is -24 in this scenario
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
Perimeter=2L+2W
L=W+5, substitute in place of 2L
90=2(W+5)+2W
90=2W+10+2W
90-10=4W
80=4W
80/4=W
W=20, if width is 20 than the length is 20+5=25 cm