1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rzqust [24]
3 years ago
8

Evaluate the expressions when x = 10 & y =8. 2y

Mathematics
1 answer:
klasskru [66]3 years ago
5 0

Answer: 64

Step-by-step explanation:

y=8

plug in 8 for y

2(8)=64

You might be interested in
Simplify fully square root of 8 x square root of 18
Sati [7]

Answer:

12

Step-by-step explanation:

square root of 8 = 2.82842712475

square root of 18 = 4.24264068712

4.24264068712 × 2.82842712475 = 12

4 0
3 years ago
Read 2 more answers
Classify the triangle with the given side lengths as 1,13,13
Anuta_ua [19.1K]

Answer:

isosceles triangle

Step-by-step explanation:

6 0
3 years ago
Megan drove from her house to work at an average speed of 45 miles per hour. The drive took her
Dominik [7]

Answer:

30 mph

Step-by-step explanation:

The average speed = Total distance / Total Time

Distance at 45 m/hr.

t = 20 minutes = 20/60 = 1/3 hour.

r = rate = 45 miles / hour

d = r * t

d = 45 * 1/3 = 15 miles.

Average Speed going home.

t =  30 minutes

t = 30 min / 60 min // hour = 1/2 hours

r = 15 miles / 1/2 = 15 * 2 =  30 miles / hr.

8 0
3 years ago
Alec paid the bill for dinner with his clients which totaled $140 before tax and tip. If an 8 percent sales tax was added to the
ch4aika [34]

The total cost of the dinner is $176.20.

<h3>What is the total cost of the dinner?</h3>

The total cost of the dinner is the sum of the bill for the dinner, the tax and the tip.

Total cost = tip + bill of the dinner + tip

Tax = 0.08 x 140 = $11.20

Total cost = $140 + $25 + $11.20 = $176.20

To learn more about taxes, please check: brainly.com/question/25311567

#SPJ1

8 0
2 years ago
The prior probabilities for events A1 and A2 are P(A1) = 0.20 and P(A2) = 0.80. It is also known that P(A1 ∩ A2) = 0. Suppose P(
Umnica [9.8K]

Answer:

(a) A_1 and A_2 are indeed mutually-exclusive.

(b) \displaystyle P(A_1\; \cap \; B) = \frac{1}{20}, whereas \displaystyle P(A_2\; \cap \; B) = \frac{1}{25}.

(c) \displaystyle P(B) = \frac{9}{100}.

(d) \displaystyle P(A_1 \; |\; B) \approx \frac{5}{9}, whereas P(A_1 \; |\; B) = \displaystyle \frac{4}{9}

Step-by-step explanation:

<h3>(a)</h3>

P(A_1 \; \cap \; A_2) = 0 means that it is impossible for events A_1 and A_2 to happen at the same time. Therefore, event A_1 and A_2 are mutually-exclusive.

<h3>(b)</h3>

By the definition of conditional probability:

\displaystyle P(B \; | \; A_1) = \frac{P(B \; \cap \; A_1)}{P(B)} = \frac{P(A_1 \; \cap \; B)}{P(B)}.

Rearrange to obtain:

\displaystyle P(A_1 \; \cap \; B) = P(B \; |\; A_1) \cdot  P(A_1) = 0.25 \times 0.20 = \frac{1}{20}.

Similarly:

\displaystyle P(A_2 \; \cap \; B) = P(B \; |\; A_2) \cdot  P(A_2) = 0.80 \times 0.05 = \frac{1}{25}.

<h3>(c)</h3>

Note that:

\begin{aligned}P(A_1 \; \cup \; A_2) &= P(A_1) + P(A_2) - P(A_1 \; \cap \; A_2) = 0.20 + 0.80 = 1\end{aligned}.

In other words, A_1 and A_2 are collectively-exhaustive. Since A_1 and A_2 are collectively-exhaustive and mutually-exclusive at the same time:

\displaystyle P(B) = P(B \; \cap \; A_1) + P(B \; \cap \; A_2) = \frac{1}{20} + \frac{1}{25} = \frac{9}{100}.

<h3>(d)</h3>

By Bayes' Theorem:

\begin{aligned} P(A_1 \; |\; B) &= \frac{P(B \; | \; A_1) \cdot P(A_1)}{P(B)} \\ &= \frac{0.25 \times 0.20}{9/100} = \frac{0.05 \times 100}{9} = \frac{5}{9}\end{aligned}.

Similarly:

\begin{aligned} P(A_2 \; |\; B) &= \frac{P(B \; | \; A_2) \cdot P(A_2)}{P(B)} \\ &= \frac{0.05 \times 0.80}{9/100} = \frac{0.04 \times 100}{9} = \frac{4}{9}\end{aligned}.

6 0
3 years ago
Other questions:
  • Measure of angle abc
    12·2 answers
  • PLZ HELP!!!!!! (WILL GIVE BRAINLIEST!!!!)
    15·2 answers
  • Score: 0 of 1 pt
    11·1 answer
  • Find the perimeter of this semi-circle with diameter,
    12·1 answer
  • Please help. Thank you I am out of points because people are stealing them.
    15·1 answer
  • Green apples cost $1.89 per pound. Alice purchased 3 ½ pounds of apples. How much did she pay?
    14·1 answer
  • Lexi is making a scale drawing of a soccer field that is 120 yards long and 80 yards wide and the field is that see strong is 30
    10·1 answer
  • Which of these are proposition ? What are the truth values of those that are propositions? a) Do you pas go b) What time is it ?
    6·1 answer
  • Identify the slope, y-intercept, and x-intercept of the graph of the linear equation. Show your work. −2x + y = 4
    9·1 answer
  • This table shows Jill's math quiz scores. What is the minimum score she needs on her next
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!