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storchak [24]
2 years ago
7

helpppppppppppppppppppppppppppppp............................ 2 more after this who ever answers it gets 50 points

Mathematics
2 answers:
marishachu [46]2 years ago
8 0
I got 5 because 4^2 is 16 and 8+3 is 11 and 16-11 is 5
Jet001 [13]2 years ago
6 0

Answer:

4

Step-by-step explanation:

substitute: (4)^2 - (8 + 3)

16 - 11 = 4

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Which pair of lines are perpendicular lines?
Evgen [1.6K]

Answer:

Lines that cross one another.

Step-by-step explanation:

4 0
3 years ago
A rare coin appreciates at a rate of 5.2% a year. If the initial value of the coin is $500, after how many years will its
Kisachek [45]

Answer: 36 years

Step-by-step explanation:

Exponential equation to represent growth:-

y=A(1+r)^t , where A is the initial value , r is the rate of growth and t is the time period.

Given : A rare coin appreciates at a rate of 5.2% a year. If the initial value of the coin is $500.

i.e. Put A= 500 and r= 0.052 in the above formula.

The amount after t years:

y=500(1.052)^t

Inequality for value cross $3,000 mark:

3000

Divide both sides by 500

6

Taking log on both sides , we get

\log6\dfrac{0.778151250384}{0.0220157398177}=35.345223773\\\\t\approx36

Hence, it will take approx 36 years to cross the $3,000 mark.

5 0
3 years ago
What is the grade if there are 85 questions and u miss 9
Irina18 [472]
If you miss 9 questions, the how many did you get right? 

85 - 9 = 76

So now you got 76 out of 85 correct or 76/85...

Now if you just do the fractional division that is described by the fraction you will get the answer.  The fraction bar literally means "divided by", so the fraction means...

76 divided by 85 which equals...

.8941

Now to convert to percentage we multiply by 100 (move the decimal 2 places to the right)

.8941 x 100 = 89.41%  Round to nearest one percent...

89%

 
5 0
3 years ago
Question 5 Unsaved Factor the 4 term polynomial using grouping: 20xy - 4y + 35x - 7 Question 5 options:
natulia [17]

Consider the expression 20xy - 4y + 35x - 7. Group first two terms and second two terms:

20xy - 4y + 35x - 7=(20xy - 4y) + (35x - 7).

In first brackets the common factor is 4y and in second brackets the common factor is 7.

Then

(20xy - 4y) + (35x - 7)=4y(5x-1)+7(5x-1)=(5x-1)(4y+7).

Answer: correct choice is A.

4 0
3 years ago
Identify the error in the student's work. Then, explain what they did wrong and give the correct answer.
lana66690 [7]
Everything is correct until they got to switching 55 instead of x<5 of that makes sense
8 0
3 years ago
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