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Papessa [141]
3 years ago
5

Please help Math it's a test

Mathematics
2 answers:
lozanna [386]3 years ago
7 0

Answer:

Yes

Step-by-step explanation:

For both 4/9 will be true.

dusya [7]3 years ago
3 0

Step-by-step explanation:

  1. yes
  2. yes

hope it helps ig...

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The Morris family drove 368.5 miles in 5.5 hours. Find the average rate of speed
yuradex [85]

Answer:

67 mph

Step-by-step explanation:

A method you'd want to remember is r = d/t, or rate equals distance divided by time.

Since the Morris family drove 368.5 miles in 5.5 hours, you'd divide the distance by 5.5.

(368.5/5.5) = 67 miles per hour.

So their average rate is 67 miles per hour.

Hope this helps.

3 0
3 years ago
8 divided by 5thirds
Igoryamba

Answer:

if you mean 8 devided by 5/3 then the answer is 4.8 :)

Step-by-step explanation:

7 0
3 years ago
One week billy worked 36 hours at $6.70 per hour the next week he worked 40 hours at $6.85 per hour how much more did he earn th
krek1111 [17]

Week one:

36 * 6.70 = $241.20

Week two:

40 * 6.85 = $274

Subtract:

274 - 241.20 = $32.80

Therefore, he made $32.80 more the second week then he did the first week.

Best of Luck!

6 0
4 years ago
Find the function with x-intercepts (-2, 0) and (4, 0), which also goes through the point (3, 10).
Alexus [3.1K]

Answer:

Option D:  is the function

Explanation: Let the general form of quadratic equation be  The function passes through the intercepts  and  and also passes though the point  Substituting the points ,  and  in the equation , we get,   -----------(1)  ----------(2)     -----------(3) Subtracting (1) and (2), we get,   -----------(4) Subtracting (2) and (3), we get,   ------------(5) Multiplying equation (4) by 5 and equation (5) by 4, to cancel the term b when adding, we get, Thus, the value of a is  Substituting  in equation (4), we get, Thus, the value of b is  Now, substituting the value of a and b in equation (1), we have, Thus, the value of c is  Now, substituting the value of a,b and c in the general formula , we get, Taking out the common term as -2 we get, Factoring , we get, Thus, the function is  

6 0
3 years ago
Read 2 more answers
Suppose a certain study reported that 27.7% of high school students smoke.
Norma-Jean [14]

<u>Given</u>:

Probability of student smoke,

P = 27.7%

  = 0.277

Number of students,

n = 632

q = 1-p

  =1-0.277

  =0.723

(i)

Here,

Number of students (n) = 60

then,

⇒ n_P=60\times 0.277

         =16.62

⇒ n_q=60\times 0.723

        =43.38

We can see that n_P > 10 and n_q>10 so the normal approximation condition are met.

Now,

\mu = n_P= 16.62

\sigma = \sqrt{n_{Pq}}

  = \sqrt{60\times 0.277\times 0.723}

  =3.9664

Now,

⇒ P(X

                      =P(Z_{18.5})

The Z-score is:

= \frac{18.5-16.62}{3.4664}

= 0.5423

hence,

The probability will be:

⇒ P(Z_{18.5}) = 0.7062

or,

⇒ P(Z

(ii)

Here,

Number of students (n) = 75

\mu = n_P = 75\times 0.277

            =20.775

\sigma = \sqrt{n_{Pq}}

   =\sqrt{75\times 0.277\times 0.723}

   =3.8756

Now,

⇒ P(X>17) = P(X> 17.5)

                      =1-P(X \leq 17.5)

                      =1-P(Z_{17.5})

The Z-score is:

= \frac{17.5-20.775}{3.8756}

= -0.9740

then, P(Z_{17.5}) = 0.165

hence,

The probability will be:

⇒ P(X>17) = 1-0.165

                      =0.835    

Learn more about probability here:

brainly.com/question/9825651

4 0
3 years ago
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