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nekit [7.7K]
3 years ago
12

Challenge to all the maths lover

Mathematics
1 answer:
RoseWind [281]3 years ago
6 0
Point(-5,3) after the 2 reflections would become (3,-5)

point (4,-2) after the 2 reflections becomes (2,4)
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Nina deposited $3400 into a savings account that pays a simple annual interest rate of 2.2% how much interest will she earn afte
leva [86]
Total = principal * (1 + rate)^years
Total = 3,400 * (1.022)^.25
<span> <span> <span> 3,418.55 </span> </span> </span>
So, after 3 months, $18.55 in interest is earned.

5 0
3 years ago
3. Which property is represented by 5+ (-8)=-8 + 5? (1 po.
AlexFokin [52]
Commutative property
5 0
3 years ago
in chemistry class Andrew has earned scores of 64 69 and 73 on three tests he must maintain an average of 72
olganol [36]
You haven't told me what the question is.  But I put the mouse
to my forehead, closed my eyes, took a deep breath, and I could
see it shimmering in my mind's eye.  It was quite fuzzy, but I think
the question is

                   "What score does Andrew need on the next test
                     in order to raise his average to 72% ?"

The whole experience drew an incredible amount of energy
out of me, and the mouse is a total wreck.  So we'll just go ahead
and answer that one.  I hope it's the correct question.

The average score on 4 tests is

                                     (1/4) (the sum of all the scores) .

In order for Andrew to have a 72% average on 4 tests,
the sum of the 4 scores must be

                                         (4) x (72%)  =  288% .

Out of that total that he needs, he already has 

                            (64% + 69% + 73%) = 206%

on the first three tests.

So in order to average 72% for all 4 tests,
he'll need to score

                             (288%  -  206%)  =   82%

on the fourth one.
6 0
3 years ago
Helppp ppleasee ??!!
madam [21]

Answer:

(m^{4} + 5) - n^{3} = 85

Step-by-step explanation:

(m^{4} + 5) - n^{3} given m = - 2, and n = -4

Substitute the given values into the polynomial expression:

(m^{4} + 5) - n^{3}

[(-2)^{4} + 5] - (-4)^{3}

= (16 + 5) - (-64)

= 21 + 64

= 85

Therefore, the correct answer is 85.

8 0
2 years ago
Read 2 more answers
A person of height 1.6m up to the eye level is standing at a point 2m away from the bank of the river and found an angle of elev
natima [27]

Step-by-step explanation:

tan30° = Height of person / (Distance away from river bank + river's width) = 1/√3.

Therefore 1.6m / (2m + x) = 1/√3

By cross multiplication, 1.6√3 = 2 + x.

Hence, x ≈ 0.77m.

5 0
3 years ago
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