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Komok [63]
2 years ago
10

How do you work out this problem?

Mathematics
1 answer:
Sophie [7]2 years ago
3 0
He had 5 more nickels then he originally thought...so he had 25 cents more then he thought he had......so if he had 4.35......he thought he had 4.35 - 0.25 = 4.10......which is 4.10 / 0.05 = 82 nickels

or this way....
4.35 / 0.05 = 87 nickels....what he had
and if he had 5 more nickels then he thought he had...then he thought he had 87 - 5 = 82 nickels
You might be interested in
Find BC. Round to the nearest tenth
SSSSS [86.1K]
<span>Using LAW OF SINES Round to the nearest tenth. 
Find BC: triangle is laying on it's side with the point to the right point(A).

B to C= 61 degrees
C to A= 23 cm
A to B= 12 degrees
--------------------
If I interpret this correctly:
Angle A = 61º

Angle C = 12º
--> B = 103º
-------------
Side b = 23 cm
--------------
BC is side a, opposite angle A
--------------
23/sin(103) = a/sin(61)
a = 23*sin(61)/sin(103)
a =~ 20.6 cm 

Hope this helped :)</span>
3 0
3 years ago
Just 6, 8, and 10 plz<br> thx
marshall27 [118]
6 - 15/40 = 0.375 = 37.5%
When looking to convert a decimal to a percent you move the decimal over two places so, 0.375 becomes 37.5 

8 - 70*1.2 = 80 

You see 100% is equal to 1.00 when multiplying/dividing. So 1.2 = 120%

10 - 48*0.25 = 12 and 12+48 = 60 So, 60.

Here, we use 0.25 because 100% - 75% = 25% or... 1.0 - 0.75 = 0.25 



7 0
3 years ago
Solve 12x + 6 2 9x + 12.<br> A. X2<br> B. xs2<br> O<br> C. X26<br> 0<br> D. Xs6<br> SUBNANT
Alexxx [7]

Answer:

269

Step-by-step explanation:

Solve 12x + 6 2 9x + 12.

A. X2

B. xs2

O

C. X26

0

D. Xs6

8 0
2 years ago
The area of a rectangle is expressed as (14r + 21) square feet. If the width of the
lilavasa [31]

Answer:

 L  = 2r  + 3

Step-by-step explanation:

Given parameters:

Area of rectangle  = 14r + 21

Width of the rectangle  = 7ft

Unknown:

Length of the rectangle  = ?

Solution:

If the length of the rectangle is designated as L;

 Area of a rectangle = Length x width

Now insert the parameters:

           14r + 21   = L x 7

            L  = \frac{14r + 21}{7}  

           L  = 2r  + 3

8 0
2 years ago
Need help pls! Answer asap
Lostsunrise [7]
1. 130°

I don't remember too many specifics from my past math classes, but I always remembered this because that is an upside-down mirror of the 130° angle.

2. 50°

A straight line is 180°, and 180 - 130 = 50.
7 0
2 years ago
Read 2 more answers
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