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Naya [18.7K]
3 years ago
7

5.1 km/h to mph. Round to the appropriate number of significant digits.

Mathematics
1 answer:
MAXImum [283]3 years ago
4 0

Step-by-step explanation:

<em>Given-</em>

5.1 km/hr

<em>Relation bween </em>mph <em>and </em><em> </em>km :-

1 \: mph = 1.609 \: km

So,

\frac{5.1 \: km}{1 \: h} \times  \frac{1 \: km}{1.609}  = 3.17 \: mph

Therefore, the answer is <u>3.17 mph</u>.

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41 + 2y = 0<br> - 4x – 9y= - 28<br> Solve each system by elimination
Iteru [2.4K]

<em><u>Question:</u></em>

4x + 2y = 0

- 4x – 9y= - 28

Solve each system by elimination

<em><u>Answer:</u></em>

The solution is x = -2 and y = 4

<em><u>Solution:</u></em>

<em><u>Given system of equations are:</u></em>

4x + 2y = 0  ------ eqn 1

-4x – 9y = - 28  ------- eqn 2

We have to solve the system of equations by elimination method

Add eqn 1 and eqn 2

4x + 2y -4x -9y = 0 - 28

0 + 2y - 9y = -28

-7y = -28

Divide both sides by -7

y = 4

<em><u>Substitute y = 4 in eqn 1</u></em>

4x + 2(4) = 0

4x + 8 = 0

4x = -8

Divide both sides by 4

x = -2

Thus the solution is x = -2 and y = 4

4 0
3 years ago
Nadia selects three marbles from the jar to the right without replacing them. What is the probability that all three marbles are
Savatey [412]
Not very likely. Does a picture come with this question.
4 0
3 years ago
The Burj Khalifa in Dubai is the tallest building in the world, at 2,717 feet. It is 217 feet taller than 5 times the height tha
melamori03 [73]

The Burj Khalifa in Dubai is the tallest building in the world, at 2,717 feet. It is 217 feet taller than 5 times the height that the Dubai Fountain reaches. How high does the Dubai Fountain reach?

Answer:

The Dubai Fountain is 500ft tall.

Step-by-step explanation:

2,717 - 217 = 2500

2500/500 = 500ft.

4 0
3 years ago
How much does Jimmy earn each week, and
Kisachek [45]

Answer:

we need more info to answer this question

4 0
3 years ago
Read 2 more answers
Please check these please
antoniya [11.8K]

-5x=60

The first thing we want to do is to divide -5 on both sides. We do this because -5x, is the same as -5 times x and we want to do the inverse of that.

After we divide on both sides, we get    x=60/-5

We know that 60 divided by -5 is -12.

Therefore our answer is:      x=-12

----------------------------------------------------------------------------------------------------------

5= n + 2

We always want to get the variable to be alone, so if we subtract by 5 we would be doing the opposite of getting the variable alone. Although, if we subtract by 2 on both sides, we would get the variable alone and the answer would be 3=n

Therefore our answer is:       False

----------------------------------------------------------------------------------------------------------

2(x-7)

By looking at this question, we see x being subtracted by 7. Then we see that 2 is being multiplied to that.

Therefore our answer is:        C

----------------------------------------------------------------------------------------------------------

The product of a number and 4 increased by 8

In these types of questions, it's smart to break it up. We will start with the product of a number and 4. We know that a number is a variable and if we look at the multiple choice answers we can see that the variable they chose to use is n. We also know that a product is when numbers get multiplied. So that means 4 and n get multiplied which turns into 4n.

For the other part of the problem, we know that increased by 8 means added my 8. Now that we got our answers, we put then together.


Therefore our answer is:       A    4n+8

----------------------------------------------------------------------------------------------------------

Pls give a like if this helped you!!!

4 0
2 years ago
Read 2 more answers
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