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marta [7]
3 years ago
13

Se A {a, b, c, d, e, f} e B = {a, e, i, o, u}. Quantos elementos possui ∩ ?l

Mathematics
1 answer:
sesenic [268]3 years ago
3 0

Answer: a

tep-by-step explanSation:

b

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a motorboat travels 456 km in 8 hours going upstream and 783 km in 9 hours going downstream. what is the rate of the boat in sti
Galina-37 [17]
\begin{gathered} \text{Let;s assume the sp}e\text{d of boat in still water is x.} \\ And\text{ the spe}ed\text{ of stream is y.} \\ For\text{ upstream,} \\ (x-y)\times8=456 \\ x-y=57\ldots(1)_{} \\ (x+y)\times9=783 \\ x+y=87 \\ x=87-y\ldots(2) \\ \text{Now, substitute the value of x in the equation (1).} \\ 87-y-y=57 \\ -2y=57-87 \\ 2y=30 \\ y=15\text{ km/hours (rate of current)} \\ \text{Substitute the value of y in the equation (2).} \\ x=87-15 \\ x=72\text{ km/hours (boat in still water)} \end{gathered}

4 0
1 year ago
What is the rise over the run (slope) in this graph? Please write in simplest form.​
never [62]

Answer:

6

Step-by-step explanation: count the numbers from 26 to 32 from 32 to 38 from 38 to 44

5 0
3 years ago
Read 2 more answers
Determine the length across the river, x to the nearest hundred ​
Ipatiy [6.2K]

Answer:

x=20.67\ ft

Step-by-step explanation:

we know that

The <u><em>Midpoint Theorem</em></u> says that the line segment joining the midpoints of any two sides of a triangle is parallel to the third side and equal to half of the third side

so

in this problem

Applying the midpoint theorem

x=\frac{124}{3}:2=\frac{124}{6}=\frac{62}{3}=20.67\ ft

7 0
3 years ago
Round 34,689.37 to:<br><br><br> a. the nearest tenths:<br><br><br><br> b. the nearest thousands:
Irina18 [472]

Answer:

A. 34,689.370

b.35,000.00

Step-by-step explanation:

3 0
4 years ago
Charge $0.75 for a package weighing up to one ounce plus an additional $0.32 for each additional ounce the package weight is 224
agasfer [191]

Answer:239.68

Step-by-step explanation:0.75 plus 0.32 = 1.07 times 224

8 0
3 years ago
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