Answer:
$312
Step-by-step explanation:
Now, what we need to know is the cost of a melon since we know the cost of a bread fruit to be 8 yen.
What the question is simply saying is that the cost of 9 breadfruits and 10 melon equals the cost of 3 breadfruits and 12 melons.
To get her income per day, we need to get the amount she buys each melon. Let this amount be x yen.
Mathematically: 9(8 yen) + 10(x yen) = 3(8 yen) + 12(x yen)
Opening the brackets: 72 + 10x = 24 + 12x
48 = 2x , x = 24 yen
Her total daily income is thus 9(8) + 10(24) = 72 + 240 = $312
40-2a
40-8
32
Hope that helps
Step-by-step explanation:
Subtract
2
x
from both sides of the equation.
y
=
4
−
2
x
x
−
y
=
2
Subtract
x
from both sides of the equation.
y
=
4
−
2
x
−
y
=
2
−
x
Multiply each term in
−
y
=
2
−
x
by
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1
Tap for more steps...
y
=
4
−
2
x
y
=
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2
+
x
Create a graph to locate the intersection of the equations. The intersection of the system of equations is the solution.
(
2
,
0
)
Answer:
x = 4.
Step-by-step explanation:
We see that it passes through the x axis at the point (4, 0) so x = 4 is a solution.
Check by solving the equation
x^2 - 4x + 13 = 13
Subtract 13 from both sides:
x^2 - 4x = 0
x(x - 4) = 0
x = 0 or x - 4 = 0, so:
x = 0 or 4.
Solution :
It is given that the mean and the standard deviation for a sample of 24 domestic cars is 35.696 MPG and 4.931 MPG respectively and the mean and the standard deviation for a sample of 16 cars is 34.345 MPG and 7.118 respectively.
The 90% confidence level for the men difference between the two samples is (-2.906, 2.844).
We know that the confidence interval is calculated to determine the mean difference among the two samples with the specified level of confidence.
Therefore, we can say that with 90% confidence, we have the 90% chances that the true mean differences will be within the range of -2.906 MPG to 2.844 MPG.
Thus, it is required 90% confidence interval interpretation.
