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3 years ago

Im Confused. Pls Help

Mathematics

1 answer:

frozen [14]3 years ago

6 0

Answer:

a = 15/28

Step-by-step explanation:

As long as the bases are the same, in this case 2, keep the base and add the exponents when multiplying

keep the base and subtract the exponents when dividing

1/4 + 3/7 = 3/28 + 12/28 = 15/28

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3 ten thousands 2 thousands *10

Ad libitum [116K]

3 the thousands = 30.000

2 thousands = 2.000

*10 = times ten

30.000 + 2.000 times 10

32.000 * 10

320.000

3 0

3 years ago

A baseball cap costs $8. A matching shirt costs 4 times as much as the cap. Which of the following can be used to determine the

Mashcka [7]

Answer: 8 x 4

Step-by-step explanation:

if the hat is 4 TIMES the baseball cap then u should multiply. anytime “times” is in a sentence like that it’s an automatic flag/reminder that multiplication is needed

6 0

2 years ago

Read 2 more answers

Find the value of the trigonometric ratio. A.3/5 B.3/4 C.4/3 D.4/5

Montano1993 [528]

We know that :

$tan(X) = \dfrac{ZY}{XY}$

$tan(X) = \dfrac{15}{20}$

$tan(X) = \dfrac{3}{4}$

therefore , the correct option is B. 3/4

7 0

3 years ago

Read 2 more answers

For the function v(t) = 10(1-4^t)show why v(0)=0

IgorLugansk [536]

4^0=1
1-1=0
10*0=0
since when something is brought to the power of 0, it equals 1. Then when put into the equation the brackets = 0 therefore the whole equation equals 0

5 0

4 years ago

Among fatal plane crashes that occurred during the past 55 years, 415 were due to pilot error, 96 were due to other human err

azamat

Answer:

Relative frequency:

$\text{Pilot error}=415/1370=0.30\\\\\text{Other human error}=96/1370=0.07\\\\\text{Weather}=169/1370=0.12\\\\\text{Mechanical problems}=622/1370=0.45\\\\\text{Sabotage}=68/1370=0.05\\\\$

The most serious threat to aviation safety is, according to this data, "mechanical failures". It can be improved by more rigorous inspection and better maintenance policies and execution.

Step-by-step explanation:

We have the data for fatal plane crashes. The sum of plane crashes is

We can calculate the relative frequency as:

$\text{Pilot error}=415/1370=0.30\\\\\text{Other human error}=96/1370=0.07\\\\\text{Weather}=169/1370=0.12\\\\\text{Mechanical problems}=622/1370=0.45\\\\\text{Sabotage}=68/1370=0.05\\\\$

We can see that the most frequent cause is "mechanical problems", with a relative frequency of 0.45.

4 0

3 years ago