Ask question

Ask question

All categories

2 years ago

7

Please help me, please

2 answers:

LiRa [457]2 years ago

8 0

Answer: D: -2
explanation:
1. divide fractions inside brackets by multiplying by the reciprocal
1/4 • 4/7
= 4/28
2. multiply 4/28 by 7/5
= 28/140 which can be reduced to 1/5
3. multiply by -10
= 1/5 • -10
= -2

Svetlanka [38]2 years ago

5 0

Answer:

-2

Step-by-step explanation:

7/5(1/4 divide 7/4) (-10)

Multiply the reciprocal of that fraction

7/5x(1/4x4/7)x(-10)

four and four cancels out

7/5x1/7x(-10)

multiplying a positive and a negative equals a negative

-7/5x1/7x10

seven cancels out and u get

-1/5x10

divide 5 both sides and u get

-2

You might be interested in

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 type up your word problem in the box below and then solve it in your notebook so that you have an answer key for your wor

Alik [6]

You have to create your own word problem based off what Uu guys learned in class

6 0

3 years ago

Determine whether the triangles are similar. If so, write a similarity statement and name the postulate or the theorem you used.

Deffense [45]

These are dilated triangles you would have to divide the large triangle by the small triangle

7 0

3 years ago

Jennifer will be driving to Las Vegas this weekend. From her home to the hotel she will be staying at is 1,345 miles away. If Je

Zarrin [17]

Answer:

It will take 19.2142857 hours

Step-by-step explanation:

1,345/70

Round to what you're required.

8 0

3 years ago

300 milliliters are equivalent to how many liters?

White raven [17]

Thanks for using brainly!B. 0.3 would be the answer.

7 0

3 years ago

Read 2 more answers