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Anit [1.1K]
2 years ago
10

Hi what is answer plz

Mathematics
1 answer:
34kurt2 years ago
6 0
the answer is 12 lolllo
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every evening jenna empties her pockets and puts her change in a jar. At the end of the week she counts her money. One week she
Darya [45]
Let Q= the number of quarters and D= the number of dimes.
Q+D= 40 coins
0.25Q+0.1D= $7.75
Rewrite equation 1 as: D = 40-Q and substitute into equation 2
0.25Q+0.1(40-Q)= 7.75 Simplify the left side
0.25Q+4-0.1Q= 7.75 Subtract 4 from both sides
0.25Q-0.1Q= 3.75 Convime like terms on left side
0.15Q= 7.75 Divide both sides by 0.15
Q=25 and D= 40-Q
D= 40-25 which is 15
So Jenna had 25 quarters and 15 dimes.
<span>To check multiply 25 x 25 and 15x10 which equals 625 and 150 this equals 775 so this is 7.75</span>
8 0
3 years ago
I need help with those 2
galina1969 [7]
Question 7 is a, multiply ever number by 5
question 8 is also a, multiply every number by -2
7 0
2 years ago
You deposit $7,900 in a money-market account that pays an annual interest rate of 4.3%. The interest is compounded quarterly. Ho
aivan3 [116]
A=7,900×(1+0.043÷4)^(4×3)
A=8,981.57
5 0
3 years ago
If x=-2,y=3,t=2 then x/y^t​
hjlf

Answer:

0.2

Step-by-step explanation:

y^t=3^2=9

x/y^t=2/9=0.2

6 0
2 years ago
Write an inequality that expresses the reason the lengths 5 feet, 10 feet, and 20 feet could not be used to make a triangle. Exp
Anit [1.1K]
The 2 smallest lengths in a triangle have to add up to be greater that the longest side of the triangle. In this case, the longest side is 20. The 2 smallest sides are 5 and 10. 5+10=15, but 15<20. This is why these 3 lengths can’t create a triangle.
6 0
3 years ago
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