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3 years ago

14

Chance can wash the car in 2 hours, while Sandy can wash the same car in 4 hours. How many hours would it take for them to wash

the car together?

1 answer:

san4es73 [151]3 years ago

6 0

<span>1 hour and 1/3rd of an hour.</span>

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What is the area of this polygon

iragen [17]

Answer:

The area of any regular polygon is given by the formula: Area = (a x p)/2, where a is the length of the apothem and p is the perimeter of the polygon. Plug the values of a and p in the formula and get the area.

Step-by-step explanation:

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3 years ago

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Three less than triple a number is the same as the number plus 57. What is the number?

saw5 [17]

Make this into an equation keeping the number as x
3x-3 = 57+x
3x-x = 57+3
2x=60
x= 30

prove this by substituting the x
30*3 -3 =57+30
87=87
there you have it :)

3 0

3 years ago

Can somebody help me with this question?

V125BC [204]

Answer:

$\frac{2}{5}\vec{a}+\vec{b}$

Step-by-step explanation:

$\vec{DE}=\vec{DB}+\vec{BE}$

$=\frac{3}{5}\vec{OB}+\frac{1}{5}\vec{BC}$ $\left\{OD:DB=2:3,BE:EC=1:4\right\}$

$=\frac{3}{5}\left(\vec{OA}+\vec{AB}\right)+\frac{1}{5}\left(\vec{BA}+\vec{AO}+\vec{DC}\right)$

$=\frac{3}{5}\left(\vec{a}+\vec{b}\right)+\frac{1}{5}\left(-\vec{b}-\vec{a}+\vec{3b}\right)$

$=\frac{2}{5}\vec{a}+\frac{2}{5}\vec{b}+\frac{3}{5}\vec{b}$

$=\frac{2}{5}\vec{a}+\vec{b}$

<em>I hope this helps you</em>

<em>:)</em>

8 0

3 years ago

Meryl spends a total of $68.82 for 2 pairs of sneakers with the same cost. The sales tax is $5.32. Meryl also uses a coupon for

Ray Of Light [21]

68.82-5.32(sales tax)-3.00=60.5
60.5 divided by 2= 30.25
Each pair of sneakers cost $30.25 each

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3 years ago

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A line goes through (-4,-5) and (2,-3). Write an equation that is perpendicular to the line above

mrs_skeptik [129]

9514 1404 393

Answer:

y = -3x

Step-by-step explanation:

The slope formula gives the slope of the segment between the given points.

m = (y2 -y1)/(x2 -x1)

m = (-3 -(-5))/(2 -(-4)) = 2/6 = 1/3

The slope of the perpendicular line is the opposite reciprocal of this, so is ...

m' = -1/(1/3) = -3

A perpendicular line is ...

y = -3x

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3 years ago