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Varvara68 [4.7K]
3 years ago
12

a boat going upstream at 4 mph then travels downstream at 10 mph. what is the rate of the boat in still water​

Mathematics
1 answer:
elixir [45]3 years ago
7 0

Answer:

7 mph

Step-by-step explanation:

If b is the rate of the boat, and s is the rate of the stream, then:

b − s = 4

b + s = 10

Solve the system of equations with substitution or elimination.  Using elimination, add the equations together:

2b = 14

b = 7

The boat's rate is 7 mph.

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Which is greater, (1/2)⁴² or (1/2)⁴⁵? Why?​
weqwewe [10]

Answer:

1/2^42 because the 45 will be dividing it b half 3 more times

Step-by-step explanation:

8 0
2 years ago
In the diagram, AC is a diameter of the circle with center 0. If m ZACB = 50°, what is ZBAC?
Snowcat [4.5K]

Answer:

40degrees

Step-by-step explanation:

Find the diagram attached

Since the triangle ina semi circle is a right angle, hence <B = 90degrees

Also frm the diagram

<A + <B + <C = 180

<A + 90 + 50 = 180

<A + 140 = 180

<A  = 180 - 140

<A = 40degrees

Hence the measure if m<BAC is 40degrees

7 0
3 years ago
Can someone please help me with this? Thank youuu!
Lunna [17]

Answer:

1996

Step-by-step explanation:

To find the number of terms in an arithmetic sequence, divide the common difference into the difference between the last and first terms, and then add 1.

2008 - 13 = 1995 + 1 = 1996

3 0
3 years ago
Earth is approximately 9.3 × 107 miles from the sun. Saturn is approximately 8.87 × 108 miles from the sun. About how much farth
Nastasia [14]

Answer:

Both distances are in the scientific notation:

Earth - Sun = 9.3 * 10^7 miles

Saturn - Sun = 8.87 * 10^8 miles

8.87 * 10^8 - 9.3 * 10^7 =

= 88.7 *10^7 - 9.3 * 10^7 =

= 79.4 * 10^7 = 7.94 * 10 ^8 = 794,000,000 miles

Answer: Saturn is  7.94 * 10^8 miles farther from Sun than Earth is.

Step-by-step explanation:

I hope this helps you :)

-KeairaDickson

7 0
3 years ago
Solve 3(-1)(10-5-2(3))
AleksAgata [21]

The answer should be 3 :)

8 0
3 years ago
Read 2 more answers
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