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maxonik [38]
3 years ago
7

This is the call plan for Robert's cell phone:

Mathematics
2 answers:
Oduvanchick [21]3 years ago
5 0
$0.20 times 30 minutes = $6.00
So $6.00 plus the $15 charge each month = $21.00
butalik [34]3 years ago
4 0
To answer this, first make an equation representing the data: 

15+ 0.20X= Bill

now plug in data you know:

15 + 0.20(30)= bill

and finally solve it: 
Bill= $21.00

You might be interested in
It took James 5h to paint an 8ft by 24ft wall. At this rate, how long would it take him to paint a 12ft by 36ft wall
olasank [31]
8 * 24 feet = 192 sq feet per 5 hours

12* 36 = 432 square feet

432 is 2.25 times the area of 192 square feet

So, it takes 5 * 2.25 = 11.25 hours


7 0
3 years ago
Write expression as a sine or cosine of an angle.<br>cos 94° cos 18° + sin 94° sin 18° ​
MArishka [77]
<h3>Answer:  cos(76)</h3>

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

Explanation:

The original expression is of the pattern cos cos + sin sin. This pattern matches the second identity in the hint. Specifically, we'll say the following:

cos(A - B) = cos(A)cos(B) + sin(A)sin(B)

cos(A)cos(B) + sin(A)sin(B) = cos(A - B)

cos(94)cos(18) + sin(94)sin(18) = cos(94 - 18)

cos(94)cos(18) + sin(94)sin(18) = cos(76)

----------

We can verify this by use of a calculator. Make sure your calculator is in degree mode.

  • cos(94)cos(18) + sin(94)sin(18) = 0.24192
  • cos(76) = 0.24192

Both expressions give the same decimal approximation, so this helps confirm the two expressions are equal. You could also use the idea that if x = y, then x-y = 0. Through this method, you'll subtract the left and right hand sides and you should get (very close to) zero.

6 0
2 years ago
Is 10,070 more than 70+10,000
jeka57 [31]

Answer:

No they are equal

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A suit cost $95 Barry has a discount coupon for 10 %off and the city has 4.5%sales tax .what is the final cost of the suit?
torisob [31]
The final price would be 89.35
3 0
3 years ago
Can someone help me with this Please​
horrorfan [7]

Answer:

314 cm²

Step-by-step explanation:

To find the area of a circle, use the formula A = πr² by substituting r = 10.

A = πr² = π10² = 314 cm²

8 0
3 years ago
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