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Kruka [31]
3 years ago
6

A plane flies 420 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 15

​mph, find the speed of the plane in still air.
Mathematics
1 answer:
prisoha [69]3 years ago
4 0

Answer:

<em>161</em><em> </em><em>speed</em><em> </em><em>of</em><em> </em><em>plain</em><em> </em><em>in</em><em> </em><em>still</em><em> </em><em>air</em><em> </em>

Mark in brainlist

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Kara used the linear model y=45,000+ 0.05x to predict her total salary from achieving total sales of x.
hoa [83]

Answer:

45,000 is the starting salary with zero sales

.05 is the amount multiplied by the number of sales that is added to her salary

For each sale we add .05 to her salary

Step-by-step explanation:

y = 45,000 +.05x

Rewriting as

y = .05x +45,000

This is in slope intercept form ( y=mx+b) where m is the slope and b is the y intercept

.05 is the slope and 45,000 is the y intercept

45,000 is the starting salary with zero sales

.05 is the amount multiplied by the number of sales that is added to her salary

For each sale we add .05 to her salary

6 0
3 years ago
Engineers want to design seats in commercial aircraft so that they are wide enough to fit 9090​% of all males.​ (Accommodating 1
Molodets [167]

Answer:

Hip breadths less than or equal to 16.1 in. includes 90% of the males.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 14.5

Standard Deviation, σ = 1.2

We are given that the distribution of hip breadths is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.10.

P(X > x)  

P( X > x) = P( z > \displaystyle\frac{x - 14.5}{1.2})=0.10  

= 1 -P( z \leq \displaystyle\frac{x - 14.5}{1.2})=0.10  

=P( z \leq \displaystyle\frac{x - 14.5}{1.2})=0.90  

Calculation the value from standard normal z table, we have,  

P(z < 1.282) = 0.90

\displaystyle\frac{x - 14.5}{1.2} = 1.282\\x = 16.0384 \approx 16.1  

Hence, hip breadth of 16.1 in. separates the smallest 90​% from the largest 10%.

That is hip breaths greater than 16.1 in. lies in the larger 10%.

4 0
3 years ago
I have took five trys to publish this
Scorpion4ik [409]

Answer:

S

Step-by-step explanation:

because its a right triangle plus i did this in 7 and 8 grade

8 0
3 years ago
Solve the equation<br><br> 9<br> - =18<br> X
BaLLatris [955]

Answer:

x=-0.5

Step-by-step explanation:

the question is -9=18x

we divide both sides by 9

-1=2x

divide both sides by 2

x=-0.5

8 0
2 years ago
Please help me id really appreciate it
loris [4]

Answer:

Step-by-step explanation:

1. 2/5

2. 9/20

3. 0.43

4. 40.2%

5. 42%

6. 0.403

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`

I truely hope this is right & i hope this helps you ! <3

5 0
2 years ago
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