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4 years ago

Round 198.1 to the nearest tenth,hundredths,hundred

Mathematics

1 answer:

galina1969 [7]4 years ago

3 0

Answer:

200

Step-by-step explanation:

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2) In August, Emily's Clothing Store sold 460 shirts with the ratio of short sleeve to long

aivan3 [116]

Answer:

138

Step-by-step explanation:

We know that there are at least 3 short sleeved shirts and there are at least 7 long sleeved shirts. And we know it's in that ratio. So the best way to start this is to divide 460 by 7+3 to get the single unit amount of both shirts.

46 is the single unit amount. So 46 * 3 will get us our short sleeved shirts:

46 * 3 = 138

To check our answer, we'll take 460-138 and divide that by 7 to see if we get 46:

322/7 = 46

So the answer is correct!

4 0

3 years ago

Complete the synthetic division problem below.

Alik [6]

Answer:

2x+7

Step-by-step explanation:

See the attachment for the working and an explanation of how you find the numbers in the table.

The quotient is 2x+7.

8 0

3 years ago

Jerry thought four DVDs $425.20. What was the unit rate?

Romashka-Z-Leto [24]

the answer is 106.30

8 0

3 years ago

A particle moves on the hyperbola xy=18 for time t≥0 seconds. At a certain instant, y=6 and dydt=8. What is x that this instant?

professor190 [17]

Answer:

The value of x at this instant is 3.

Step-by-step explanation:

Let $x\cdot y = 18$ , we get an additional equation by implicit differentiation:

$x\cdot \frac{dy}{dt}+y\cdot \frac{dx}{dt} = 0$ (1)

From the first equation we find that:

$x = \frac{18}{y}$ (2)

By applying (2) in (1), we get the resulting expression:

$\frac{18}{y}\cdot \frac{dy}{dt}+y\cdot \frac{dx}{dt} = 0$ (3)

$y\cdot \frac{dx}{dt}=-\frac{18}{y}\cdot \frac{dy}{dt}$

$\frac{dx}{dt} = -\frac{18}{y^{2}} \cdot \frac{dy}{dt}$

If we know that $y = 6$ and $\frac{dy}{dt} = 8$ , then the first derivative of x in time is:

$\frac{dx}{dt} = -\frac{18}{6^{2}} \cdot (8)$

$\frac{dx}{dt} = -4$

From (1) we determine the value of x at this instant:

$x\cdot \frac{dy}{dt} = -y\cdot \frac{dx}{dt}$

$x = -y\cdot \left(\frac{\frac{dx}{dt} }{\frac{dy}{dt} } \right)$

$x = -6\cdot \left(\frac{-4}{8} \right)$

$x = 3$

The value of x at this instant is 3.

4 0

3 years ago

The cost to purchase a golf ball is $5 at Marty’s Sports Goods. To purchase a golf ball at Golf Club you must be a member. The m

LenKa [72]

It would be 10 for it tovbe the same price as at the golf club

6 0

3 years ago