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eduard
3 years ago
14

How long does it take to lewis hamilton travelling at 150mph to cover 15 miles?

Mathematics
1 answer:
Sliva [168]3 years ago
7 0
The answer is 0.1 hours = 6 minutes
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Gabby and Sydney bought some pens and pencils. Gabby bought 4 pens and 5 pencils for $6.71. Sydney bought 5 pens and 3 pencils f
denpristay [2]

Answer:

The cost of each pens is $1.19

The cost of each pencils is $0.39

Step-by-step explanation:

Given as :

The number of pens bought by Gabby = 4

The number of pencils bought by Gabby = 5

The number of pens bought by Sydney = 5

The number of pencils bought by Sydney = 3

The total cost of Gabby items = $6.71

The total cost of Sydney items =$7.12

Let The cost of each pens = x

And The cost of each pencils = y

Now, According to question

For Gabby

4 x + 5 y = $6.71           .............1

For Sydney

5 x + 3 y = $7.12           .............2

Now, Solving both equations

5 × (4 x + 5 y) - 4 × (5 x + 3 y) = 5 × 6.71 - 4 × 7.12

Or, 20 x + 25 y - 20 x - 12 y = 33.55 - 28.48

Or, (20 x - 20 x) + (25 y - 12 y) = 5.07

or, 0 + 13 y = 5.07

∴ y = \frac{5.07}{13}

I.e y = $0.39

So, The cost of each pencils = y = $0.39

Again , put The value of y in eq 1

I,e 4 x + 5 y = $6.71    

Or, 4 x + 5 × 0.39 = 6.71

or, 4 x + 1.95 = 6.71

or, 4 x = 6.71 - 1.95

or , 4 x = 4.76

∴  x = \frac{4.76}{4}

I.e x = $1.19

The cost of each pens = x = $1.19

Hence The cost of each pens is $1.19

And The cost of each pencils is $0.39   Answer

6 0
3 years ago
What is the perimeter for 3f+3f+8+8+2f-1
Montano1993 [528]

Answer:

<em>To find the Perimeter</em><em> </em><em>just </em><em>add </em><em>all </em><em>the </em><em>numbers</em>

<em>=</em><em>3f+3f+8+8+2f-1</em>

<em>=</em><em>8f+</em><em>1</em><em>5</em>

5 0
3 years ago
Read 2 more answers
I need help with pre-algebra <br> 8³−9⋅2÷3=
Elena L [17]

Answer:

well this is according to my calculator

Step-by-step explanation:

the answer is 506

8 0
3 years ago
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3x into 4x minus 5 plus 3 if x is equal to 1/2
Solnce55 [7]

Answer: 8 3/4

Step-by-step explanation:

3x(4x-5+3); where x is 1/2

Substitute the value 1/2 with x

3 1/2 (4 1/2 - 5+3)

7/2 (9/2 -2)

7/2 (5/2)

35/4 = 8 3/4

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3 years ago
The value of X is:<br>A)27<br>B)7<br>C)5<br>D)√21<br>E)√27​
liq [111]

Answer:

E.

Step-by-step explanation:

6^2=x^2+3^2

X^2=36-9

X=

\sqrt{27}

3 0
3 years ago
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