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Inga [223]
3 years ago
5

Gaff has used 331/3 of his monthly minutes on his cell phone plan. If he already used 200 mintues, how many does he have left th

is month?
Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
6 0

The first step to solve this problem is to compute for the total minutes allowable in his cell phone plan. To compute for this, you have to divide the number of minutes consumed by the fraction of the time consumed.

200 minutes / 33 1/3% = 600 minutes

To compute for the remaining minutes left for this month, you have to deduct the consumed minutes to the total allowable minutes in his plan.

600 minutes – 200 minutes = 400 minutes left

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If the measure of one interior angle of a regular polygon is 144 degrees, find
Dmitrij [34]

There are 10 sides becuase the equation set up is \frac{180(n-2)}{n} and equal it to 144.

Solve for n and get 10


6 0
2 years ago
Review the steps of the proof of the identity
koban [17]

Answer:

step 2

and then also in step 3 compensating the error in step 2

Step-by-step explanation:

I think I just answered this for another post.

sin(a - b) = sin(a)cos(b) - cos(a)sin(b)

so, step 1 is correct :

sin(A - 3pi/2) = sin(A)cos(3pi/2) - cos(A)sin(3pi/2)

but step 2 suddenly and incorrectly switched that central "-" to a "+".

yes, sin(3pi/2) = -1, but that is still an explicit factor in step 2. so it was not used to flip the central operation from subtraction to addition, and therefore this change was a mistake.

then, in step 3, another error was made by just ignoring the "-" sign of "-1" and still keeping the central "+" operation. this error compensated for the error in step 2 bringing us back by pure chance to the right result.

5 0
1 year ago
99 points
Scrat [10]
l \ equal \ 3m \\\\ therefore, 6 *L^2=6*3^2 = (6*9)

((6*9)) = 54m^2

<span>27 m²
30 m²
36 m²
54 m²</span>
3 0
3 years ago
Read 2 more answers
The length of a rectangle is 4 inches more than its width, and its perimeter is 34 inches. Find the length and width of the
gizmo_the_mogwai [7]

Answer:

Width = 6.5 inches

Length = 10.5 inches

Step-by-step explanation:

Let

"l" be length of rectangle

and

"w" be width of rectangle

Since length of rectangle is 4 inches MORE THAN WIDTH, we can write:

l = 4 + w

The perimeter is sum of all sides, so

Perimeter = l + l + w + w = 2l + 2w

The perimeter is 34, so we can write:

2l + 2w = 34

Putting 1st equation in 2nd, we get equation in "w" and solve for this first:

2l + 2w = 34\\2(4+w) + 2w = 34\\8+2w+2w=34\\4w=26\\w=\frac{26}{4}=6.5

Width is 6.5 in

Now, l = 4 + w, so

l = 4 + 6.5 = 10.5

Length is 10.5 in

3 0
3 years ago
What is 8z - 22 = 3(3z + 11) - z
Masja [62]
8z-22=3(3z+11)-z
9z-22=9z+33
-22=33
or
0=55
either way no solution
6 0
3 years ago
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