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garik1379 [7]
2 years ago
7

Need help please on this question

Mathematics
2 answers:
Gnesinka [82]2 years ago
5 0

Answer:

a c

Step-by-step explanation:

Rudiy272 years ago
5 0
Here is the answer for yiu

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In an agricultural study, the average amount of corn yield is normally distributed with a mean of 185.2 bushels of corn per acre
RideAnS [48]

Answer: B. 461 acres

Step-by-step explanation:

Given : In an agricultural study, the average amount of corn yield is normally distributed with a mean of 185.2 bushels of corn per acre, with a standard deviation of 23.5 bushels of corn.

i.e. \mu=185.2\ \ , \ \sigma=23.5

Let x denotes the amount of corn yield.

Now, the probability that the amount of corn yield is more than 190 bushels of corn per acre.

P(x>190)=P(\dfrac{x-\mu}{\sigma}>\dfrac{190-185.2}{23.5})

[Formula : z=\dfrac{x-\mu}{\sigma}]

=P(z>0.2043)=1-P(z  [∵ P(Z>z)=1-P(Z<z)]

1-0.5809405   [using z-value calculator or table]

=0.4190595

Now, If a study included 1100 acres then the expected number to yield more than 190 bushels of corn per acre :-

0.4190595\times1100=460.96545\approx461\text{ acres}

hence, the correct answer is B. 461 acres .

8 0
3 years ago
PLEASE HELP AND FAST
aksik [14]

Answer:

I think it's A because.

Step-by-step explanation:

A trendline is a line drawn over pivot highs or under pivot lows to show the prevailing direction of price. Trendlines are a visual representation of support and resistance in any time frame. They show direction and speed of price, and also describe patterns during periods of price contraction.

7 0
2 years ago
T-shirts are on sale for $4 off he regular price. Jeb buys 5 T-shirts for a total of 45.05, including a 6% sales tax. Which equa
Ksenya-84 [330]

Answer:

1.06 × 5(r-4) = 45.05

Step-by-step explanation:

Let r represents the regular price of each T-shirt,

After getting $ 4 off in regular price,

New price of each T-shirt = r - 4,

Thus, new price of 5 T-shirts = 5 × price of each T-shirt

= 5(r - 4)

Since, there is 6% sales tax,

Then, the final price after discount = 5(r - 4) + 6% of (5(r-4))

= 5(r-4) + 0.06(5(r-4))

= 1.06 × 5(r-4)

According to the question,

1.06 × 5(r-4) = 45.05

Which is the required equation.

5 0
3 years ago
Please give me the answer to 8 WHOEVER EXPLAINS GETS BRAINLEST
Yuki888 [10]
I Lou think the answer is 84?
7 0
3 years ago
T-shirts and sweatshirts were sold at a local shop. One salesperson sold three T-shirts and seven sweatshirts for a total amount
natulia [17]

Answer:

B. - Three T-Shirts and Seven Sweatshirts: $37.5 + $203 =<u>240.50 </u>

   - Six T-Shirts and Five Sweatshirts: $75 + $145 = <u>$220</u>

Step-by-step explanation:

A. - Three T-Shirts and Seven Sweatshirts: $27 + $213.50 = <u>$240.50</u>

   - Six T-Shirts and Five Sweatshirts: $54 + $152.5 = <u>$206.5</u>

B. - Three T-Shirts and Seven Sweatshirts: $37.5 + $203 =<u>240.50 </u>

   - Six T-Shirts and Five Sweatshirts: $75 + $145 = <u>$220</u>

C. - Three T-Shirts and Seven Sweatshirts: $35.01 + $210 = <u>$245.01</u>

   - Six T-Shirts and Five Sweatshirts: $70.02 + $150 = <u>$220.02</u>

<u></u>

<u>Mark as Branliest Please! :)</u>

7 0
1 year ago
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