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Kipish [7]
3 years ago
13

I only need help for no. 10

Mathematics
1 answer:
Stels [109]3 years ago
4 0
Use the quadratic formula and a=4, b=3, c=-4

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A car starts a journey with a full tank of gas. The equation y=16 - 0.05x relates the number of gallons of gas, y, left in the t
GenaCL600 [577]

We are given that a car starts a journey with a full tank of gas. The equation y=16-0.05x relates the number of gallons of gas (y) left in the tank to the number of miles the car has traveled(x).

A. We will find y intercept by substituting x=0 in our equation,

y=16-0.05*0

y=16

Now let us find our x-intercept by substituting y=0 in our equation,

0=16-0.05x

0.05x=16

x=\frac{16}{0.05}=320

Therefore, x-intercept is 320 and y-intercept is 16.

B. Our x-intercept represents that after travelling 320 miles there were 0 or none gallons of gas left in tank.

C. Our y-intercept represents that there were 16 gallons of gas in car tank when car started the journey.


6 0
3 years ago
Please help! Brainliest, stars, and hearts! Explain please! I GIVE BRAINLIEST if CORRECT!
BlackZzzverrR [31]

Answer:

x=31

Step-by-step explanation:

3x+25+2x=180°

=5x=155°

x=155/5

x=31

5 0
3 years ago
Adult male heights are normally distributed with a mean of 70 inches and a standard deviation of 3 inches. The average basketbal
sweet-ann [11.9K]

Answer: First Option is correct.

Step-by-step explanation:

Since we have given that

Mean (\mu)= 70 inches

Standard deviation (\sigma)= 3 inches

Average basket ball player (\bar{X}) = 79 inches

Since it is normally distributed assume with 5% significance .

So, it becomes,

Z>\frac{\bar{X}-\mu}{\sigma}\\\\Z>\frac{79-70}{3}\\\\Z>\frac{9}{3}\\\\Z>3\\\\\therefore\ P(Z>3)=1-0.9987=0.0013

At 0.05 level of significance , 0.0013 = 0.13% of the adult male population is taller than the average basketball player .

Hence, First Option is correct.

5 0
3 years ago
Read 2 more answers
What is the value of -4.4+ (5-2)(-6)?
Pachacha [2.7K]

Answer:

Step-by-step explanation:

-4.4 + (5-2)(-6) = -4.4 + (3)(-6) = -4.4 + (-18) = - 22.4

8 0
3 years ago
Read 2 more answers
Subtract.
san4es73 [151]
Your answer would like be 5 5/8
8 0
3 years ago
Read 2 more answers
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