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1 year ago

Evan takes 15.5 minutes to walk 1 mile.

Mathematics

2 answers:

spin [16.1K]1 year ago

8 0

67.425 mins
15.5 times 4.35 is 67.425

RUDIKE [14]1 year ago

4 0

67.425 minutes

15.5 times 4.35 is 67.425

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4x-8=<br><img src="https://tex.z-dn.net/?f=4x%20-%208%20%3D%20%20-6x%20%2B%2012" id="TexFormula1" title="4x - 8 = -6x + 12" alt

svet-max [94.6K]

Simplify, simplify, simplify for problems like this. Add 6x to both sides to get 10x - 8 = 12. Then add 8 to both sides, so 10x = 20. Now divide by 10, and you get x = 2

5 0

2 years ago

Find the equation of the line that is parallel to y=3x-2 and that contains the points ( 2,11)

gogolik [260]

Answer:

y = 3x+5

Step-by-step explanation:

$(2,11)=(x_1,y_1)\\y =3x-2\\m = 3\\\\Substitute \:values\:into \:point \:slope\:form\\y-y_1=m(x-x_1)\\y-11=3(x-2)\\y-11=3x-6\\y=3x-6+11\\y = 3x +5$

4 0

2 years ago

Factorise: a^2 + 8a - 20

dusya [7]

That would be
(a-2)(a+10)

8 0

2 years ago

Read 2 more answers

Two consecutive integers are such that 7 times the biggest and then added to the smallest equals

Arturiano [62]

Answer:

61,62

Step-by-step explanation:

Let the smallest number be x

Hence, the biggest number = x+1 [as it consecutive]

Hence,

7(x+1)+x=495

7x+7+x+495

8x=495-7

8x=488

x=61

Hence, smaller number=61, bigger number=62

7 0

2 years ago

At the beginning of my bike ride I feel good, so I can travel 20 miles per hour. Later, I get tired and travel only 12 miles per

Vesnalui [34]

Answer: $3\dfrac{1}{4}$ hours

Step-by-step explanation:

Let x be the time ( in hours ) you feel good and y be the time ( in hours ) that you get tired.

As per given , we have

x+y= 8

Since : $Distance = Speed\times Time$

So , we have

20x+12y=122

According to the given question , we have the following system of equations ,

$x+y= 8--------(1)\\\\20x+12y=122------------------(2)$

Multiply 12 on both sides of equation (1) , we get

$12x+12y=96------------(3)$

Eliminate equation (3) from (2) , we get

$8x=26\\\\\Rightarrow\ x=\dfrac{13}{4}=3\dfrac{1}{4}$

Hence, you felt $3\dfrac{1}{4}$ hours good.

3 0

2 years ago