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Semmy [17]
3 years ago
10

All help helps me so please give help

Mathematics
1 answer:
goblinko [34]3 years ago
4 0

(53 + 23) + 7 = 53 + (23 + 7) =53 + 30 = 83

Answer: A. 53 + (23 + 7)

It's Associative Laws (a + b) + c = a + (b + c).

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A ferry traveled 1 6 6 1 ​ start fraction, 1, divided by, 6, end fraction of the distance between two ports in 3 7 7 3 ​ start f
docker41 [41]

Answer:

\frac{7}{18} of the distance

Step-by-step explanation:

We know that a ferry traveled \frac{1}{6} of the distance between two ports in \frac{3}{7} hours.

In order to calculate what fraction of the distance between the two ports can the ferry travel in one hour we can do the following reasoning :

The rate of the ferry is the same at any time.

The ferry will travel \frac{1}{6} of the distance in \frac{3}{7} hours.

If we divide each fraction by 3 ⇒

\frac{\frac{1}{6}}{3}=\frac{1}{18} and \frac{\frac{3}{7}}{3}=\frac{1}{7}

We do this to obtain a ''1'' in the numerator of the second fraction (the hours fraction). Now, we can say that :

The ferry will travel \frac{1}{18} of the distance in \frac{1}{7} hours.

Finally, we multiply each fraction by 7 (in order to obtain the distance for 1 hour) ⇒

(\frac{1}{18}).7=\frac{7}{18} and (\frac{1}{7}).7=1

We found out that the ferry will travel \frac{7}{18} of the distance in 1 hour.

4 0
3 years ago
A boat goes 24 miles at a constant speed in 4 hours against a river current.
Ne4ueva [31]

Answer:

8 miles per hour.

Step-by-step explanation:

24miles in 4 hours = 24/4=6 miles per hour.

24 miles in 3 hours = 24/3=8 miles per hour. The boat going with the current of the river is traveling at 8 miles per hour.

7 0
3 years ago
2/5x + 4 = 1/4x. Find x
irina1246 [14]

Answer:

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

Exact Form:

x =  − 80 /3

Decimal Form:

x = −  26.  ¯

            6

Mixed Number Form:

x = − 26  2

          ----

           3

4 0
3 years ago
Miguel paid a total of $12,000 for stock that was $8 per share. If he sold all his shares for $15,000, how much profit on each s
Scorpion4ik [409]
If you would like to know how much profit on each share did he make, you can calculate this using the following steps:

$12,000 / $8 = 1,500 shares

$15,000 / 1,500 shares = $10 per share

x% of $8 is $10
x/100 * 8 = 10     /*100/8
x = 10 * 100 / 8
x = 125%

125% - 100% = 25%

Miguel made 25% ($2) profit on each share.
6 0
3 years ago
Read 2 more answers
When you have two side lengths of 2in and 4.5in What is the other side length?
nika2105 [10]

Answer:

The solution for the other side length is the interval

(2.5,6.5)

Step-by-step explanation:

I will assume that is a triangle

we know that

The <u><em>Triangle Inequality Theorem</em></u> states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

Let

x ---> the measure of the third side

Applying the Triangle Inequality Theorem

1) 2+4.5 > x

6.5 > x

Rewrite

x < 6.5\ in

2) 2+x> 4.5

x> 2.5\ in

therefore

The solution for the other side length is the interval

(2.5,6.5)

5 0
4 years ago
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