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2 years ago

10

Can someone help me please I really need help please help meee I’m struggling I WILL HELP YOU WITH YOUR ASSIGNMENT IF YOU HELP M

E PLEASE

1 answer:

Anna71 [15]2 years ago

5 0

Answer:

0.19

Step-by-step explanation:

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A farmer sold 3/5 of his oranges to a first customer and 90 oranges to a second customer. How many oranges did he have altogethe

enyata [817]

Answer:

He had 225 oranges to start with

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2 years ago

BRAINLIEST ASAP!!!!!!!<br><br> why is it useful to factor out the gcf first when factoring

Lelu [443]

By pulling out the common factors for each pair of terms, we can rewrite the original polynomial like this:
3x(2x + 1) + 10(2x + 1)
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2 years ago

Which of these equations is for a line perpendicular to y-3=5(x-2)?

olasank [31]

Answer:

C

Step-by-step explanation:

y-3=5(x-2) (rearrange this to be in slope- intercept from) (add 3 to both sides)

y = 5(x-2) + 3 (distribute parentheses)

y = x(5) - 2(5) + 3

y = 5x -10 + 3

y = 5x - 7

recall that for a line with gradient m, the gradient of the perpendicular line will be - (1/m)

hence in our case, our gradient of the original line is 5, hence the gradient of the perpendicular line is -1/5

From the choices, the only one that is consistent with this is C

i.e choice C:

5y + x = 25

5y = -x + 25

y = -(1/5) x + 5 ===> gradient of -1/5

6 0

2 years ago

Part A: Find a rational number that is between 9.5 and 9.7. Explain why it is rational.

madreJ [45]

9.6 yes because it can be expressed as a fraction

6 0

2 years ago

Read 2 more answers

An instructor believes the distribution of scores on her final exam will have mean 62 and standard deviation 7. Fred is a studen

OLga [1]

Answer:

a) $P(47$

And then the probability that Fred will not score between 47 and 77 is

1-0.968 = 0.0321

b) $P(45$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Part a

Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:

$X \sim N(62,7)$

Where $\mu=62$ and $\sigma=7$

We are interested on this probability on the probability that Fred will not score between 47 and 77. So we can begin finding this probability

$P(47$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(47$

And we can find this probability on this way:

$P(-2.143$

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.

$P(-2.143$

And then the probability that Fred will not score between 47 and 77 is

1-0.968 = 0.0321

Part b

$P(45$

And we can find this probability on this way:

$P(-2.429$

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.

$P(-2.429$

7 0

3 years ago