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3 years ago

13

Akshat spent 3 hours each day driving to and form work. He opened an office closer to home and now drives 80 minutes to and form

work. What is the percent of decrease in his commute time?

1 answer:

anygoal [31]3 years ago

4 0

3*60 = 180 minutes

80/180 = 0.44

1-0.44 = 0.56

it was a 56% decrease in commute time

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ki77a [65]

I'm assuming your allowed to use a calculator for this? That's what I would do.
$\sqrt{108} = 10.39$
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$9 \times 20 = 180$
$180 + 13 = 193$
193 is the new numerator and the new whole fraction is this and dividing it out gives you,
$\frac{193}{20} = 9.65$
For the third one, just input it into a calculator,
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3 years ago

True or false ? The polynomial below is a perfect square trinomial of the form A2-2AB+B2 4x2-16x+16

Vlad1618 [11]

True

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3 years ago

VashaNatasha [74]

Answer: I don't think any of those choices are correct.

Step-by-step explanation:

2-6*-5t+6

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<h3>-30t+4</h3>

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Which value of x satisfies the equation sin40=cosx

svp [43]

Answer:

Try to use your calculator and just substitute values

Step-by-step explanation:

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VladimirAG [237]

Answer:

Step 3

Step-by-step explanation:

The solution is given in the image attached. The steps are:

Step 1:

$2x-\frac{1}{4} -\frac{3}{5}x=\frac{55}{4}$

Step 2: simplifying the coefficients of x:

$2x -\frac{3}{5}x-\frac{1}{4}=\frac{55}{4}\\\frac{10x-3}{5} -\frac{1}{4}=\frac{55}{4}\\\frac{7x}{5} -\frac{1}{4}=\frac{55}{4}$

Step 3: Adding 1/4 to both sides

$\frac{7x}{5} -\frac{1}{4}+\frac{1}{4} =\frac{55}{4}+\frac{1}{4}\\ \frac{7x}{5}=\frac{55+1}{4}\\ \frac{7x}{5}=\frac{56}{4}\\$

Step 4: Multiplying both sides by 5/7

$\frac{7x}{5}*\frac{5}{7} =\frac{56}{4}*\frac{5}{7} \\x=10$

The addition property of equality states that if a number is added to both sides of an equation, the equation is still valid (i.e the equation is still the same). From the steps above, The addition property of equality was applied in step 3

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