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Phoenix [80]
2 years ago
13

If you don’t know then don’t say anything.

Mathematics
1 answer:
tino4ka555 [31]2 years ago
3 0

Answer:

in total there are 80 subjects. I don't know what class width is though.

Step-by-step explanation:

Look at the graph

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Determine the slope of the lines parallel and perpendicular to -4x+3y=11
andreev551 [17]

Answer:

parallel = 4/3

perpendicular =-3/4

Step-by-step explanation:

Solve for y

-4x+3y=11

Add 4x to each side

3y = 4x+11

Divide by 3

y = 4/3 x +11/3

This is in the form y = mx+b where m is the slope

m =4/3

The parallel line has the same slope

parallel slope is 4/3

The perpendicular line has a negative reciprocal slope

m = -(1 /4/3) = - 3/4

6 0
3 years ago
Read 2 more answers
Holly invested £3000 in a savings account the account paid compound interest of 4% per year work out how much was in the account
pogonyaev
Exponential function 
form of interest rates 

P(1 + r)^x
where p is the prime and r is rate of change and x is time in years 

3000(1 + 4%)^1
The answer would be 
3000(1.04)^1 = 3120 Euros 
3 0
2 years ago
I need help, my teacher didnt teach up this​
nlexa [21]

Answer:

The volume is <u>1539.38</u>

Step-by-step explanation:

7 0
2 years ago
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X + 6 = -10<br> ttyyyyyyy
KIM [24]

Answer:

x= -16

Step-by-step explanation:

6 0
2 years ago
At a given moment, a plane passes directly above a radar station at an altitude of 6 km6 km and the plane's speed is 800 km/h.80
Valentin [98]

Answer: see explanation

Step-by-step explanation:

so you have a plane at constant altitudeof 6km (6000m) flying at 800 km/h (222.222 m/s) (see the image)

the plane is moving with constant speed therefore x(t) = 222.222*t => no forces are interacting horizontally with the plane therefore acceleration is 0, then v is constant and x(t) is a linear function which coefficient is v.

now we have a triangle with an angle theta, one side is x(t), and the other is 6000m. we can get theta by tan(theta) = 6000/(222.222*t). 24 minutes are 1440 seconds so if we replace such value, we get the theta angle by  solving for theta => theta = arctan(6000/(222.222*1440)) = 0.019 radians or 1.074 degrees. Now if you want to know the exchange rate of theta we have to differentiate the expression with respect to t:

\frac{d}{dt} \theta = \frac{d}{dt}(arctan(\frac{6000}{222.222*t} )) = \frac{1}{1+\frac{6000}{222.222*t} } * -\frac{27}{t^2}  = -\frac{27}{t^2+729.001}

then replace t with 1440 and you will get that theta is changing by -0.000013 (1.3E-5) radians or -7.458E-4 degrees every second which has a lot of sense since the plane is getting out of your line of sight due to the earth's curvature

5 0
2 years ago
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