Answer:¿Qué es lo contrario de estos estadistas?
Step-by-step explanation:
What is the opposite of these statesment
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! :)
A² + 4a + 3
(a+3)(a+1) This is the length and the width of the rectangle.
Perimeter = length + length + width + width
P = (a+3) + (a+3) + (a+1) + (a+1)
P = a + a + a + a + 3 + 3 + 1 + 1
P = 4a + 6 + 2
P = 4a + 8
B) 4a + 8
Answer:
answer b. y = 3x + 4
Step-by-step explanation:
y = ax + b
with a and b being as follows:
a = slope, which is given as 3.
b = the y–intercept meaning, where the line intercepts the y axis, which is given as 4.
Now you know the answer of the equation of the line, which is answer b. y = 3x + 4
Answer:
The token's circumference is 
Step-by-step explanation:
step 1
Find the token's radius
The area of the circle is equal to
we have
so
step 2
Find the token's circumference
The circumference of the circle is equal to
we have
substitute
