Answer:
17
Step-by-step explanation:
I think 17
Answer: they have
et n = number of nickels
Let d = number of dimes
given:
(1) +n+%2B+d+=+45+
(2) +5n+%2B+10d+=+360+
-------------------
Multiply both sides of (1) by 5
and subtract (1) from (2)
(2) +5n+%2B+10d+=+360+
(1) +-5n+-+5d+=+-225+
+5d+=+135+
+d+=+27+
and, since
(1) +n+%2B+d+=+45+
(1) +n+%2B+27+=+45+
(1) +n+=+45+-+27+
(1) +n+=+18+
She had 18 nickels and 27 dimes
check:
(2) +5%2A18+%2B+10%2A27+=+360+
(2) +90+%2B+270+=+360+
(2) +360+=+360+
Step-by-step explanation:
Answer:
Oliver completed his training work in 50.25 hours
Step-by-step explanation:
we know that
we have
<u><em>Convert days to hours</em></u>
<u><em>Convert minutes to hour</em></u>
so
therefore
Oliver completed his training work in 50.25 hours
Answer:
The slope is 3/5
Step-by-step explanation:
–3x + 5y = 10
Rewrite the equation in slope intercept form y = mx+b where m is the slope and b is the y intercept
Add 3x to each side
5y = 3x+10
Divide by 5
y = 3/5 x + 10/2
The slope is 3/5
Answer: A
Step-by-step explanation: 1+1+1+1-1=3 or you can think about it like this
1+1+1+1=4 then just subtract the negative to get 3
