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2 years ago

Question 20 please make (x) the subject of the formula

Mathematics

1 answer:

Masja [62]2 years ago

3 0

Answer:

The answer is

$\frac{ {x}^{2} - n}{m} = { (\frac{ {a}^{2} }{b}) }^{a} \\ {x}^{2} - n = m{( \frac{ {a}^{2} }{b} })^{a} \\ {x}^{2} = m {( \frac{ {a}^{2} }{b} )}^{a} + n \\ x = \sqrt{m {( \frac{ {a}^{2} }{b}) }^{4} - n}$

Step-by-step explanation:

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A cruise ship sailed for 9 hours at a speed of 18 miles per hour. How far did the cruise ship sail?

Lena [83]

Answer:

162 miles

Step-by-step explanation:

9 x 18 = 162

7 0

2 years ago

Courtney walked from her house to the beach at a constant speed of 4 kilometers per hour, and then walked

RUDIKE [14]

The system of equations that represents this situation are:

q + p = 2

4q + 5p = 8

Solution:

Let q be the number of hours it took Courtney to walk from her house to the beach

Let p be the number of hours it took her to walk from the beach to the park

The entire walk took 2 hours

Therefore,

q + p = 2 ------- eqn 1

The total distance Courtney walked was 8 kilometers

Total distance = 8 km

Courtney walked from her house to the beach at a constant speed of 4 kilometers per hour

Then walked from the beach to the park at a constant speed of 5 kilometers per hour

Distance is given as:

$distance = speed \times time$

From her house to the beach:

$distance = 4 \times q = 4q$

From the beach to the park:

$distance = 5 \times p = 5p$

We know that,

Total distance = 8 km

Therefore,

4q + 5p = 8 ------ eqn 2

Thus the system of equations that represents this situation are:

q + p = 2

4q + 5p = 8

8 0

3 years ago

A meat market sold five 7/5 pounds of meatballs on Monday six 1/2 pounds of meat balls on Tuesday and 4 pounds of meatballs on W

Whitepunk [10]

Answer:

Add all of them together. So your answer is

61/10 or 6 and

Step-by-step:

7/5 =1 and 2/5 or 14/10

1/2= 5/10

4/1 or 4= 40/10

14/10 + 5/10 + 40/10 = 61/10

Simplified: 6 and 1/10

8 0

2 years ago

Mr. Jones waffle recipe uses 3/4 cups of milk to make 8 waffles how many cups of milk should be used to make 24 waffles?

ella [17]

Answer:

9/4

Step-by-step explanation:

If you need 3/4 cups of milk to make 8 waffles, you would need 9/4 cups to make 24 waffles because you are making 3 times the amount of waffles, so you need 3 times the amount of milk.

5 0

2 years ago

Please answer for me :

Arisa [49]

Answer:

Part A - $2\frac{1}{2} + b = 4\frac{2}{3}$

Part B - $2\frac{1}{6}$

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers