3 years ago

Help? I dontn understand this! algreba is weird and hard

Mathematics

1 answer:

Softa [21]3 years ago

5 0

1. B
2.0.9925
3.C
4.A
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KITE is a kite.

vodomira [7]

Answer:

KI = 4.47

IT = 6.32

Step-by-step explanation:

2²+4² = 4+16 = 20

The square root of 20 is 4.47

2²+6² = 4 + 36 = 40

The square root of 40 is 6.32

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2 years ago

A shoe manufacturer collected data regarding men's shoe sizes and found that the distribution of sizes exactly fits the normal c

Lina20 [59]

Answer: 97.72%

Step-by-step explanation:

Given : A shoe manufacturer collected data regarding men's shoe sizes and found that the distribution of sizes exactly fits the normal curve.

Let x be the random variable that represents the shoe sizees.

Also, The population mean = $\mu=11$ ; Standard deviation: $\sigma=1.5$

Formula for z:-

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

Put x= 8, we get

$z=\dfrac{8-11}{1.5}=-2$

Now, the probability that the male shoe sizes are greater than 8 :-

$P(x>8)=P(z>-2)=1-P(z\leq-2)\\\\=1-0.0227501=0.9772499\approx0.9772$

Hence, the percent of male shoe sizes are greater than 8 is 97.72%.

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3 years ago

A recipe for 30 cookies calls for 6 tablespoons of butter. How many tablespoons of butter would you need for 45 cookies?

ASHA 777 [7]

Answer:

9 tablespoons

Step-by-step explanation:

cut the recipe in half then add one half to the full

6+3=9

i bake a lot i had to learn how to do this

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3 years ago

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There are 40 coins in a roll of quarters. The change machine at the local arcade holds 320 rolls of quarters. How many quarters

erica [24]

Answer:

C, 12,800

Step-by-step explanation:

40 x 320 = 12,800

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3 years ago

PLEASE HELP ME WILL MARK BRAINLIEST!!

Misha Larkins [42]

Answer:

7,881.628

Step By Step Explanation:

It just is?

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