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3 years ago

Kailey wrote 8,912,000 in scientific notation as 89.12 x 10(exponent 5). Which statement best describes Kailey’s work?

Mathematics

2 answers:

Makovka662 [10]3 years ago

7 0

Answer:

Step-by-step explanation:

olga55 [171]3 years ago

3 0

Answer:

Kailey is not correct: 89.12 x 10^5 is not written in scientific notation.

Explanation: Just took the test and that's the correct answer

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The distance between Capeton and Jonesville is 80 miles. The scale on the map is 0.75 in. : 10 miles. How far apart are the citi

Mnenie [13.5K]

The answer to this question is 6 in. Hope this helps.

7 0

3 years ago

Help me solve (b) in this quadrilateral

Savatey [412]

Answer:

b = 87°

Step-by-step explanation:

In order to answer this question, we need to utilise an important angle fact which is <em>angles in a quadrilateral add up to 360° </em>

Using the information we can set up an equation to find the value of b

→ Form equation

63 + 140 + 70 + b = 360

→ Simplify

273 + b = 360

→ Minus 273 from both sides isolate b

b = 87°

3 0

3 years ago

Read 2 more answers

Suppose on a certain planet that a rare substance known as Raritanium can be found in some of the rocks. A raritanium-detector i

aleksandrvk [35]

Answer:

0.967 = 96.7% probability the rock sample actually contains raritanium

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Positive reading

Event B: Contains raritanium

Probability of a positive reading:

98% of 13%(positive when there is raritanium).

0.5% of 100-13 = 87%(false positive, positive when there is no raritanium). So

$P(A) = 0.98*0.13 + 0.005*0.87 = 0.13175$

Positive when there is raritanium:

98% of 13%

$P(A) = 0.98*0.13 = 0.1274$

What is the probability the rock sample actually contains raritanium?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.1274}{0.13175} = 0.967$

0.967 = 96.7% probability the rock sample actually contains raritanium

7 0

3 years ago

If you are traveling 543 miles and you know that your car gets 18 miles per gallon of gasoline, approximately how many gallons o

Inga [223]

we know that

the car gets 18 miles per -----------> 1 gallon of gasoline

for 543 miles ---------------------> x gallons of gasoline

by proportion

543/18=x/1---------->x=543/18------->x=30.17 gallons

therefore

the answer is

30.17 gallons

6 0

3 years ago

Write an inequality. Thank you!<br><br> PLEASE ANSWER IMMEDIATELY!

guapka [62]

Answer:

m > 2

Step-by-step explanation:

Since it is an open dot, it is not greater than or equal to, but rather just greater than.

Then, since the arrow goes to the right, the equation is greater than.

8 0

3 years ago