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2 years ago

POSSIBLE POINTS: 28.57

Mathematics

1 answer:

malfutka [58]2 years ago

4 0

18.344 should be right. Have a good day!

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What number must be added to the expression below to complete the square ? x2+7x

stellarik [79]

Answer:

you must add 2 to the equation

Step-by-step explanation:

6 0

3 years ago

Sporting goods store is offering a 20% discount on shoes. Mariana also has a $5 off coupon that can be applied to her

LekaFEV [45]

The discount price will be the same either way. (The commutative property)

20 percent of $89.00= 17.80$

$89.00 - ($5.00 x $17.80) = $66.20

$89.00 - ($17.80 x $5.00) = $66.20

8 0

3 years ago

ABC is a right triangle. If AC = 12 and BC = 13, find AB.

AysviL [449]

Since BC is the hypotenuse...

α = 12
c = 13

Hence..

13² = 12² + ß²
ß = √(13² - 12²)
= √(169 - 144)
= √25
= 5

Hence, AB = 5

I hope this helps!

3 0

3 years ago

Read 2 more answers

I need in a linear equation please i need help

Ostrovityanka [42]

Caterer two charges 550 for hall rental plus $40 per person

6 0

3 years ago

If 8% of all cell phones are defective, and you have a random sample group of 100 Samsung Galaxy Vills,

Sati [7]

Answer:

Mean = 8

Variance = 7.36

Standard Deviation = 2.7129

Step-by-step explanation:

This is a binomial distribution with parameters, n and p.

Where

n is sample size (given as 100)

p is the probability of success, or probability of defective (given as 8% or 0.08)

The mean, variance, standard deviation formula for binomial distribution is shown below:

Mean = $np$

Variance = $npq$

Standard Deviation = $\sqrt{npq}$

Where q would be probability of failure, or "1 - p"

Thus,

n = 100

p = 0.08

q = 1 - 0.08 = 0.92

SO, we have:

Mean = $np=100*0.08=8$

Variance = $npq=100*0.08*0.92 = 7.36$

Standard Deviation = $\sqrt{npq}=\sqrt{7.36}=2.7129$

5 0

3 years ago