Answer:
is there any more details?
Step-by-step explanation:
Mary is an authorized user on her parents' credit card. If Mary doesn't use the card in a responsible way, then her parent's credit may be damaged. Parents can face a serious financial ruin. A major part of her parent's earnings will go towards paying for the misuse Mary had incurred. Parents can also face debt. Hence, a credit card must be used responsibly.
Expectation is linear in the sense that
![E[2X+3Y]=E[2X]+E[3Y]=2E[X]+3E[Y]](https://tex.z-dn.net/?f=E%5B2X%2B3Y%5D%3DE%5B2X%5D%2BE%5B3Y%5D%3D2E%5BX%5D%2B3E%5BY%5D)
so that
![E[2X+3Y]=2\cdot6+3\cdots9=12+27=\boxed{39}](https://tex.z-dn.net/?f=E%5B2X%2B3Y%5D%3D2%5Ccdot6%2B3%5Ccdots9%3D12%2B27%3D%5Cboxed%7B39%7D)
Answer:
426 ft^2.
Step-by-step explanation:
It area = area of the rectangle + area of the triangle
= 15 * 26 + 1/2 * 8 * 9
= 390 + 1/2*8*9
= 390 + 36
= 426 ft^2.
<span>D. She wrote articles and gave speeches about hate crimes against blacks in the south.</span>