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4 years ago

Help me asap.........

Mathematics

1 answer:

sattari [20]4 years ago

7 0

Answer:

F. 4h ≥ 18

Step-by-step explanation:

Liang wants ...

distance ≥ goal

We know that ...

distance = speed · time . . . . . . where speed = 4 mph, and time = h hours

Then the appropriate inequality for Liang's goal of 18 miles or more is ...

4h ≥ 18

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Find the uncertainty in a calculated average speed from the measurements of distance and time. Average speed depends on distance

zzz [600]

Answer:

$\frac{\Delta v}{v}=0.426$

Step-by-step explanation:

you have that the average sped is given by the following formula:

$v(x,t)=\frac{x}{t}$

The uncertainty formula for a division is given by:

$\frac{\Delta v}{v}=\sqrt{(\frac{\Delta x}{x})^2+(\frac{\Delta t}{t})^2}$ (1)

Δv: uncertainty in speed

Δx: uncertainty in the distance = 0.9m

Δt: uncertainty in time = 0.7s

x: distance = 8.1m

t: time = 1.7s

You replace the values of all parameters in the equation (1):

$\frac{\Delta v}{v}=\sqrt{(\frac{0.9}{8.1})^2+(\frac{0.7}{1.7})^2}\\\\\frac{\Delta v}{v}=0.426$

Hence, the relation between the uncertainty in the average velocity is 0.426

4 0

3 years ago

$8000 principal earning 5% compounded annually, after 6 years

Verdich [7]

Future amount after 6 years will be: $10720.76

Step-by-step explanation:

Principal = $8000

Interest= 5% compounded annually

Time = 6 years

We need to find A (future amount)

The formula used is:

$A=P(1+\frac{r}{n})^{nt}$

A= Future amount

P= Principal amount

r= interest rate

n= no of times interest is applied

t= time

Putting values and finding A

P=8000. r=0.05, n=1, t=6

$A=P(1+\frac{r}{n})^{nt}\\A=8000(1+\frac{0.05}{1})^{1*6}\\ A=8000(1+0.05)^{6}\\ A=8000(1.05)^{6}\\A=10720.76$

So, Future amount after 6 years will be: $10720.76

Keywords: Compound Interest

Learn more about Compound Interest at:

#learnwithBrainly

8 0

3 years ago

Lucy wrote a pattern using the rule "Subtract 3." The first two numbers in her pattern

galben [10]

Answer:

I can't see the choices but some options are:

36 subtract 3 = 33 subtract 3 = 30 subtract 3 = 27 subtract 3 = 24 subtract 3 = 21 subtract 3 = 18, etc.

5 0

3 years ago

Suppose that Bold w in V has the property that Bold uplusBold wequalsBold wplusBold uequalsBold u for all Bold u in V. In parti

Lady bird [3.3K]

this ? makes no sense Step-by-step explanation:

5 0

4 years ago

Yesterday, Fairlane got 1 1/2 inches of rain. It got 3/4 of that rain before 3:00 P.M. How much rain did Fairlane get before 3:0

aalyn [17]

Answer:

3/4

Step-by-step explanation:

1 1/2

3/2 make this 6/4 so you can have a common denominator

3/4

Then you subtract and boom 3/4 it also says in the problem lol

3 0

3 years ago