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const2013 [10]
3 years ago
9

PLEASE HELP ME I WILL MARK BRAINLIEST AND LOOK AT BOTH PAGES PLEASE!!!

Mathematics
1 answer:
Lapatulllka [165]3 years ago
4 0

Answer:

I think 1/2

Step-by-step explanation:

Since there are 4 coins overall and 2 nickels, then the probabilty is 2/4

2/4 simplified is 1/2

(I've never been too good at probability so sorry if it is wrong)

Why do you need the answer so bad? Are you trying to get a pet?

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Question 1: The diagonal of a rectangle, with base x, remains at a fixed
kramer

We have that The height changing rate  when the length of the base is 2 cm

dh/dt=-7.2cm/s

From the question we are told

The diagonal of a rectangle, with base x, remains at a fixed value of 3cm. If the base is increasing at a rate of 8 cm/s. at what rate is  the height changing when the length of the base is 2 cm?

Generally the Pythagoras equation for the triangle   is mathematically given

as

r^2=h^2+x^2

With r=3

Therefore

dx/dt=8cm/s

Hence

2rdr/dt=2hdh/dt+2xdx/dt\\\\\dh/dt=\frac{-x}{r^2-x^2}dx/dt

We  have

dh/dt=-2/\sqrt{5}(8)\\\\dh/dt=-7.2cm/s

Therefore

The height changing rate  when the length of the base is 2 cm

dh/dt=-7.2cm/s

For more information on this visit

brainly.com/question/23366835

4 0
3 years ago
ralph is an electrician . he cgarges an initial fee of $16 plus $33 per hour if ralph earned $197 on a job how long did the job
KiRa [710]

x=#of hours worked
33 per hour or 33x (since 33 times every hour)
initial fee is independed of hours so
fee=33x+16

if fee=197 then solve for hours or x
197=33x+16
subtract 16 from both sides
181=33x
divide both sides by 33
5.4848484848=x
he worked 5.48 hours


8 0
3 years ago
For a standard normal distribution, if P (z less-than-or-equal-to a) = 0.7116, what is the value of P (z greater-than-or-equal-t
Irina-Kira [14]

Answer:equal

Step-by-step explanation:

The probability that a random variable is greater than or equal to z standard deviations from the mean in a standard normal distribution he P(z≤a)+P(z>a)=1, so P(z>a)=1-P(z≤a)=1-.7116=.2884

6 0
2 years ago
Please help!!!!!!!math test
Elis [28]

Answer:

f(32)=3

Step-by-step explanation:

once again plug 32 in for X and you end up with 3

4 0
3 years ago
Amy is making salt dough for an art project. Her receipt calls for 2/3 cup of salt for each batch of salt dough she makes. She h
a_sh-v [17]

Answer: 5 batches

Step-by-step explanation: 3 1/3 / 2/3 10/3 * 3/2= 5

4 0
3 years ago
Read 2 more answers
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