Answer:
Gabby received
7 nickels
10 dimes
3 quarters
Step-by-step explanation:
Let
x----> the number of dimes
y----> the number of nickels
z---> the number of quarters
Remember that
1 dime=$0.10
1 nickel=$0.05
1 quarter=$0.25
we know that
0.10x+0.05y+0.25z=2.10 ------> equation A
x=y+3-----> equation B
z=y-4 -----> equation C
substitute equation B and equation C in equation A and solve for y
0.10(y+3)+0.05y+0.25(y-4)=2.10
0.10y+0.30+0.05y+0.25y-1=2.10
0.40y=2.10-0.30+1
0.40y=2.80
y=7 nickels
<em>Find the value of x</em>
x=y+3 -----> x=7+3=10 dimes
<em>Find the value of z</em>
z=y-4 -----> z=7-4=3 quarters
therefore
Gabby received
7 nickels
10 dimes
3 quarters
Area of <span>trapezoid=(7+3)*h/2=20 cm2
10*h/2=20
5h=20
h=4
the answer is 4.0 cm</span>
Answer:
1.5
Step-by-step explanation:
12/8=1.5
Answer:
Hi, There! my name is Jay And I'm here to help!
<h2>Question</h2>
Two times a number plus one is at least seven
<h2>Answer</h2>
x ≥ 3 would be correct
- <em>all values of x which are 3 or above can be used</em>
Step-by-step explanation:
For this Question, your going to use Easy multiplication and Addition Skills
your equation is going to look like this ↓

So we have to determine what x Is

Since we have figured out what
is Time to Add it all together

Therefore, I hope this helps!
___________________________________________
Take Care! ❁
❁
❁
Answer:
4
Step-by-step explanation:
First, you divide 77 by 878978974898949. You then add four to that. This leaves you with 4. It is easiest to use a calculator. However, you can do long division, and then, add 4. Your answer after calculating all the numbers will leave you with a total of 4.