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3 years ago

Please do this for me I’m having a very hard time and failing math because of this!

Mathematics

2 answers:

otez555 [7]3 years ago

5 0

Multiple the speed and time then add that to the first time and get new time

Ganezh [65]3 years ago

3 0

Answer:

Remember The distance, speed, time triangle

Step-by-step explanation:

Formula is

Speed x time=distance

Distance divided by speed=time

distance divided by time=speed

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Is 2/9 closer to 1/2 or 1 or 0

SVEN [57.7K]

2/9=0.222
The answer would be 0.

8 0

4 years ago

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What is the value of (–3 + 3i) + (–2 + 3i)?

Bess [88]

Answer:

6i - 5

Step by step:

Assuming x = i

Simplify step by step:

−3+3x−2+3x

=−3+3x+−2+3x

Combine Like Terms:

=−3+3x+−2+3x

=(3x+3x)+(−3+−2)

=6x+−5

5 0

4 years ago

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A music industry researcher wants to estimate, with a 90% confidence level, the proportion of young urban people (ages 21 to 35

katrin2010 [14]

Answer:

21378

Step-by-step explanation:

The confidence level is 90%, which gives us a Z of 1.645.

Our equation is (Z^2*p*q)/e^2

(1.645^2*p*(1-.21))/ (.01^2)

E is the error proportion, .01

Q is 1-p or the proportion

P is the pop you need

With this, we can solve

and get p = 21377.5975 and rounded to 21378

5 0

3 years ago

Write four numbers that round to 700,000 when rounded to the nearest hundred thousand

slega [8]

699,995
699,996
699,997
699,998

6 0

3 years ago

A hot air balloon is floating above a straight road. To estimate their height above the ground, the balloonists simultaneously m

san4es73 [151]

Answer:

$h=1.99 miles$

Step-by-step explanation:

Let's call $h$ the balloon's height above the ground and $b$ the horizontal distance between the balloon and the first milepost.

If the angle of the depression of this milepost is 24 degrees, we can say the following:

$tan(24)=\frac{h}{b}$

<em> $b=\frac{h}{tan(24)}$ (equation 1)</em>

For the next milepost, the horizontal distance between the balloon and tihs milepost will be $(b+1)miles$ and the angle of depression will be 20 degrees, so we can say the following

$tan(20)=\frac{h}{b+1}$

$b+1=\frac{h}{tan(20)}$

$b=\frac{h}{tan20}-1$

then, replacing from <em>equation 1</em>

$\frac{h}{tan(24)} =\frac{h}{tan(20)}-1$

$1 =\frac{h}{tan(20)}-\frac{h}{tan(24)}$

$1 =h*(\frac{1}{tan(20)}-\frac{1}{tan(24)})$

$h=\frac{1}{(\frac{1}{tan(20)}-\frac{1}{tan(24)})}$

Resolving, we'll find the value of $h$

$h=1.99 miles$

So, the balloon's height above the ground is 1.99miles

4 0

4 years ago