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3 years ago

Brian earns $28.50 tutoring for 3 hours. Assuming he is paid at constant rate, how much would Brian earn tutoring for 18 hours?

Mathematics

2 answers:

ValentinkaMS [17]3 years ago

6 0

Answer:

Step-by-step explanation:

171 just multiply it by 6 since 3 times 6 equals 18

Vsevolod [243]3 years ago

6 0

Answer:

171.00 dollars

Step-by-step explanation:

28.50÷3=9.50

9.50= 1 hour

9.50×18=171.00

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In a box of 25 external hard disks, there are 2 defectives. An inspector examines 5 of these hard disks. Find the probability th

Salsk061 [2.6K]

Answer:

0.3667 or 36.67%

Step-by-step explanation:

The probability of getting at least 1 defective hard disk among the 5 (P(X>0)) is equal to 100% minus the probability of getting none defectives (1-P(X=0)).

If 23 out of 25 hard disks are non-defective, the probability is:

$P(X>0) = 1 -P(X=0)\\P(X>0) = 1 -\frac{23}{25}*\frac{22}{24} *\frac{21}{23} *\frac{20}{22} *\frac{19}{21}\\ P(X>0) = 0.3667=36.67\%$

The probability that there is at least 1 defective hard disk is 0.3667 or 36.67%.

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3 years ago

What is the value for m and n?

Inga [223]

Answer:

M = 8 N = 10

Step-by-step explanation:

Multiplying exponents adds the exponent, meaning that inside of the brackets, it is a^4 * b^5. Multiply the exponents by two because you are squaring the entire equation. Therefore, m=8 and n=10

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2 years ago

A salad dressing recipe requires at least 8 oz of oil to be combined with some combination of vinegar and lemon juice in a 16 oz

valentina_108 [34]

Let x represent the number of ounces of vinegar

Let y represent the number of ounces of lemon juice

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Container can hold = 16 oz

So the inequality equation will be :

$x+y+8\geq16$

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3 years ago

A right triangle has side lengths a,b, and c as shown below. Use these lengths to find sin x, tan x, and cos x.

My name is Ann [436]

Step-by-step explanation:

sinx = a/b

tanx= a/c

cosx= c/b

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3 years ago

Suppose the correlation between height and weight for adults is +0.40. What proportion (or percent) of the variability in weight

Schach [20]

Answer:

We are given the correlation between height and weight for adults is 0.40.

We need to find the proportion of the variability in weight that can be explained by the relationship with height.

We know that coefficient of determination or R-square measures the proportion or percent of variability in dependent variable that can be explained by the relationship with independent variable. There the coefficient of determination is given below:

$R^{2}=r^{2}=0.40^{2}=0.16$

Therefore, the 0.16 or 16% of the variability in weight can be explained by the relationship with height

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3 years ago