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3 years ago

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20 POINTS NO FAKE ANSWERS OR ELSE I WILL REPORT

1 answer:

balu736 [363]3 years ago

5 0

An experimental probability is more of an estimate and it is not always exact because it usually gives you a rough idea of what may happen during your experiment. The theoretical probability is the actual results and your results of spinning a coin 100 times may vary and will not always be the same.

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Find the quotient: -40 ÷ 5

Hoochie [10]

The answer for this would be negative eight

5 0

2 years ago

Read 2 more answers

Which number has the greatest value? <br><br>a) 0.38<br>b) 08.2<br>c) 02.8<br>d) 2.80

Elis [28]

Answer:

the correct answer would be b)8.2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What’s.the perimeter of a square with an area of 49 cm2

Free_Kalibri [48]

Answer:

<h3>28</h3>

Step-by-step explanation:

Area of a square =

$s^2$

Perimeter =

$4\times s$

Where s = side

Solve for s using the area

$A =49\\\\49 = s^2\\\\Square\:root \:both\:sides\:of\:the\:equation\\\\\sqrt{49} = \sqrt{s^2} \\\\7 =s\\\\s =7$

Find the perimeter

$4\times s\\\\= 4 \times 7\\\\= 28$

8 0

3 years ago

Given: Q=7m+3n,R=11-2m,s=n+5,and T =-m-3n+8 simplify Q-[R+S]-T

Gnesinka [82]

Answer:

Simplify

$Q-[R+S]-T$

The answer is:

$10m+5n-24$

Step-by-step explanation:

We have the expressions:

$Q=7m+3n\\R=11-2m\\S=n+5\\T=-m-3n+8$

Now, we need simplify:

$Q-[R+S]-T$

We need to replace each term by the expressions:

$7m+3n-[(11-2m)+(n+5)]-(-m-3n+8)$

We need to remember the rule of signs:

$-/-=+$

$-/+=-$

$+/+=+$

With this in mind we solve the parentheses:

$7m+3n-[(11-2m)+(n+5)]-(-m-3n+8)$

$7m+3n-[11-2m+n+5]+m+3n-8$

$7m+3n-11+2m-n-5+m+3n-8$

let's group common terms

$7m+3n-11+2m-n-5+m+3n-8\\7m+2m+m+3n-n+3n-11-5-8$

We must add and subtract common terms:

$7m+2m+m+3n-n+3n-11-5-8\\10m+5n-24$

The answer is:

$10m+5n-24$

7 0

3 years ago

You give up a full-time salary of $40,000 a year to go to school for 2 years. The total cost of going to school is $30,000. If y

Xelga [282]

Answer:

$68,000

Step-by-step explanation:

we have to determine the total economic costs of going to college = ($40,000 x 2) + ($30,000 x 2) = $140,000

since we want to recover our "college investment" in 5 years or less, then we must earn at least $140,000 / 5 = $28,000 more per year

the minimum salary that we should earn after graduating = $40,000 (our current salary) + $28,000 (to recover college costs) = $68,000

5 0

3 years ago