2 years ago

15. Sofie bought a desk for $45 that was

Mathematics

1 answer:

Alchen [17]2 years ago

8 0

Answer:

10%

Step-by-step explanation:

50+50=100

45+45=90

100-90=10

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FrozenT [24]

Answer:

20h+e

Step-by-step explanation:

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3 years ago

A line passes through the point (0, 5) and has a slope of - 1/2 . Which is the equation of the line in slope-intercept form?

sergey [27]

<span>The equation of the line that passes through the point (0,5) with a slope of 1/2</span>

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3 years ago

The time t required to drive certain distance varies inversely with the speed r. It takes 2 hours to drive the distance at 40 mi

Roman55 [17]

Answer:

$\frac{16}{9}$ hours

Step-by-step explanation:

Whenever 2 quantities (suppose a and b) are inversely proportional to each other, we can write an proportionality equation (with k as proportional constant) as:

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Since, here t is INVERSELY PROPORTIONAL to r, we can say:

$t=\frac{k}{r}$

Firstly, we have t = 2 hour and r = 40 mph, so we find k:

$t=\frac{k}{r}\\2=\frac{k}{40}\\k=2*40\\k=80$

Now, secondly, we have r = 45 and k = 80, we need to find t:

$t=\frac{80}{45}\\t=\frac{16}{9}$

So, it would take $\frac{16}{9}$ hours

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3 years ago

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alina1380 [7]

Answer:

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Step-by-step explanation:

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3 years ago

Calculate the capacity in liters of a tin 20m by 15m by 10m.

rusak2 [61]

20 * 15 * 10 *10^-6
= 0.003

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3 years ago