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2 years ago

Two boys are trying to solve 17+36=?

Mathematics

1 answer:

Mars2501 [29]2 years ago

6 0

Tom because you just subtracted the 7 from 17 and got 10 and 6 from 36 and got 30

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Annie would like to take out a loan to put a new playground in her yard for her kids. She offers her car which is worth $7,800 a

bija089 [108]

Answer:

Hello, The correct answer is A. $7,708. Good luck!!

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2 years ago

The voltage V in a simple electrical circuit is slowly decreasing as the battery wears out. The resistance R is slowly increasin

hoa [83]

Answer:

$\frac{dI}{dt}=-0.00016 A/s$

Step-by-step explanation:

We are given that

By ohm's law

$V=IR$

R=389 ohm

I=0.03 A

$\frac{dV}{dt}=-0.06V/s$

$\frac{dR}{dt}=0.07ohm/s$

We have to find rate of change of current I means $\frac{dI}{dt}$

Differentiate the equation w.r.t t

$\frac{dV}{dt}=\frac{dI}{dt}R+I\frac{dR}{dt}$

Substitute the values then we get

$-0.06=\frac{dI}{dt}\times 389+0.03\times 0.07$

$-0.06=389\frac{dI}{dt}+0.0021$

$-0.06-0.0021=389\frac{dI}{dt}$

$-0.0621=389\frac{dI}{dt}$

$\frac{dI}{dt}=\frac{-0.0621}{389}=-0.000160 A/s$

Hence, the current I is changing at the rate=-0.00016A/s

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3 years ago

A plane ticket to Barcelona costs £175 the price decreases by 6% work out the new price of the plane ticket

ololo11 [35]

What I like to do to solve these is to divide the 175 by 100 because that's kind of what it relates to a percent... and then I multiply by 96. So in this problem:
175/100= 1.75
1.75 x 94 and then that equals your answer 164.50 euros is the new cost of the ticket.
Hope this Helps!
P.S a thanks or brainliest would mean a lot. :)

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2 years ago

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dolphi86 [110]

D
You figure out the absolute value by determining how far the number is from the point 0 on a number line.

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2 years ago

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Suppose I collected a sample and calculated the sample proportion. If I construct a 90% confidence interval for the population p

Daniel [21]

Answer:

Step-by-step explanation:

If you construct a 90% confidence interval for the population proportion and a 95% confidence interval for the population proportion, the 95% confidence will have a wider interval. This is because a higher confidence interval will provide more possible values from which the true value will be determined. Therefore, If you want more confidence that an interval contains the true parameter, then the intervals will be wider.

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3 years ago