Answer:
Step-by-step explanation:
x = 100° ( being vertically opposite angles )
hope it helps :)
9, its 9, trust me, its 9.
<span>sum of -2 and d: d - 2
</span><span>The quotient of -18 and the sum of -2 and d: - 18 / (d - 2)
answer
</span> - 18
---------
d - 2
D= # of dimes
q= # of quarters
QUANTITY EQUATION:
d + q= 64
COST EQUATION:
0.10d + 0.25q= $9.25
STEP 1:
multiply quantity equation by -0.10 to be able to eliminate the d term in step 2
(-0.10)(d + q)= (-0.10)(64)
-0.10d - 0.10q= -6.40
STEP 2:
add equation from step 1 to cost equation to eliminate the d term and solve for q
Add
0.10d + 0.25q= $9.25
-0.10d - 0.10q= -6.40
0.15q= 2.85
divide both sides by 0.15
q= 19 quarters
STEP 3:
substitute q value in step 2 into either original equation to find d value
d + q= 64
d + 19= 64
subtract 19 from both sides
d= 45 dimes
CHECK:
0.10d + 0.25q= $9.25
0.10(45) + 0.25(19)= 9.25
4.50 + 4.75= 9.25
9.25= 9.25
ANSWER: There are 45 dimes and 19 quarters.
Hope this helps! :)
Answer:
(a) 3x -5 =25
(b) x^2 + y = 18
(c) 6x/5 =4+x
(d) 1•5x + x =2(x-4)
Step-by-step explanation:
