Answer:
你看chart的triangle你看the dimension
Step-by-step explanation:
Answer:
x=7 x=-5
Step-by-step explanation:
x^2 – 2x – 35 = 0
Factor
What two numbers multiply to -35 and add to -2
-7*5 = -35
-7+5 = -2
(x-7) (x+5 ) =0
Using the zero product property
x-7 =0 x+5 =0
x=7 x=-5
The area 21 of a parallelogram is base times height 7. So the base must be 3.
Answer: 3
Note the 1 is irrelevant; it could be anything and the area wouldn't change.
Answer:
90degrees
Step-by-step explanation:
To get the measure of angle C, we will use the cosine rule as shown;
AB² = AC²+ BC² - 2(AC)(BC)cos C
85² = 13²+ 84² - 2(13)(84)cos C
7225 = 169 + 7056 - 2184cosC
7225 - 7225 = -2184cosC
0 = -2184cosC
cosC = -0/2184
cosC = 0
C = arccos0
C = 90degrees
Hence the measure of angle C is 90degrees
Answer:
a. A consumer testing service is commissioned to rank the top 5 brands of dishwasher detergent. Nine brands are to be included in the study. In how many different ways can the consumer testing service arrive at the ranking?
b. A group of 12 people is traveling in three vehicles. If 4 people ride in each vehicle, in how many different ways can the people be assigned to the vehicles?