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Varvara68 [4.7K]
3 years ago
12

PLEASE HELP AND SHOW WORK !!

Mathematics
1 answer:
polet [3.4K]3 years ago
6 0
1. $21 divided by 6m= $3.5
2. Take the $3.5 and multiply by 11m =38.5m
3. $28 divide by $3.5=8m
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If you had an item that was $32 and the markup is 40% what would the cost be​
Serggg [28]

Answer:

44.8

Step-by-step explanation:

multiple 32 by 1.4

6 0
3 years ago
I'm confused. Can someone help?
VARVARA [1.3K]

a.

The polynomial w^2+18w+84 cannot be factored

The perfect square trinomial is w^2+18w + 81

----------

The reason the original can't be factored is that solving w^2+18w+84=0 leads to no real solutions. Use the quadratic formula to see this. The graph of y = x^2+18x+84 shows there are no x intercepts. A solution and an x intercept are basically the same. The x intercept visually represents the solution.

w^2+18w+81 factors to (w+9)^2 which is the same as (w+9)(w+9). We can note that w^2+18w+81 is in the form a^2+2ab+b^2 with a = w and b = 9

================================================

b.

The polynomial y^2-10y+23 cannot be factored

The perfect square trinomial is y^2-10y + 25

---------

Using the quadratic formula, y^2-10y+23 = 0 has no rational solutions. The two irrational solutions mean that we can't factor over the rationals. Put another way, there are no two whole numbers such that they multiply to 23 and add to -10 at the same time.

If we want to complete the square for y^2-10y, we take half of the -10 to get -5, then square this to get 25. Therefore, y^2-10y+25 is a perfect square and it factors to (y-5)^2 or (y-5)(y-5)

8 0
3 years ago
What is the measurement of N?
Radda [10]

Answer:

N = 18°

Step-by-step explanation:

7 0
3 years ago
This is the last one I need help with sorry I didn't make this into one post.
marusya05 [52]

Hi There!

Answer:

A.)$15.96

Step-by-step explanation:

3 1/3 * 2.99 = 9.96666666667

1 1/2 * 3.99 = 5.985

9.9666666666 + 5.985 = 15.9516666667 = $15.96

Hope This Helps :)

5 0
2 years ago
Find m angle A
stepan [7]

Answer:

  D.  14°

Step-by-step explanation:

The Law of Sines tells you sides are in proportion to the sine of the opposite angle:

  sin(A)/BC = sin(B)/AC

  sin(A) = BC/AC·sin(B)

  A = arcsin(BC/AC·sin(B)) = arcsin(7/28·sin(75°)) ≈ 13.974° ≈ 14°

7 0
3 years ago
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