Answer:

With the confidence level we can find the significance level:

And the value for
. Then we can use the normal standard distribution and we can find a quantile who accumulates 0.1 of the area on each tail and we got:

Step-by-step explanation:
For this problem we have the confidence level given

With the confidence level we can find the significance level:

And the value for
. Then we can use the normal standard distribution and we can find a quantile who accumulates 0.1 of the area on each tail and we got:

The quadrilateral have equal opposite sides, for example:
Then, (4x + 6) must be equal to (7x - 3), and (4y - 3) is equal to (3y + 1), therefore

We can solve that equation for x

Hence, x = 3. Now let's solve the other equation

Then the value of y is 4.
Final answers:
x = 3
y = 4
Answer:
3x⁴ + x³ + 3 x² - 18 x + 4
Step-by-step explanation:
Answer:
84 cm^2
Step-by-step explanation:
Area of triangle + area of rectangle
Area of triangle = 1/2*l*b
= 1/2*8*3= 12 cm^2
Area of rectangle = l*b
= 12*6 = 72 cm^2
Total area= 72+12
= 84 cm^2