8. A cellphone company charges $29.99 per month for the first 500 minutes of calls and $0.30 a minute for any calls over the 500-minute limit. . Last month Demetria made 615 minutes of calls on her cellphone. Excluding tax, what were the total charges for her cellphone calls last month? A. $29.99 B. $34.50 C. $64.49 D. $184.50​

Answer: Step-by-step explanation:

57 - 10x = 45

-10x=-12

x=1.2

- 3y + 10x = -5

-3y+10=-5

-3y=-15

y=5

Answer:

1) 57 - 10x = 45 answer: x=−51/5

2) - 3y + 10x = -5 answer: x=3/10y+−1/2 or y=10/3x+5/3

Step-by-step explanation: Hope this help :D

Answer:

i think its G cause 25% but you don't have the time listed

Step-by-step explanation:

Answer:

I agree with the other person who answer 25% I thinking it's either H or G but im not sure

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

1st

Step-by-step explanation:

Answer:

$225

Step-by-step explanation:

if 1% of 1700 is 17, then multiply 17 by 15, which i 255. so you spent $225 on tuition

Answer:

I believe that the answer is a

Step-by-step explanation:

tangent is

opposite/adjacent

Answer:

$22.05

Step-by-step explanation:

65% x $63 = $40.95

$63 - $40.95 = $22.05

Answer:

See below.

Step-by-step explanation:

Plug in each value for  x .

[tex]x=3 \Rightarrow 600\cdot 3^3 = 600\cdot 27=16200\\\\x=0\Rightarrow 600\cdot 3^0=600\cdot 1 = 600\\\\x=2\Rightarrow 600 \cdot 3^2=600\cdot 9 =5400[/tex]

Answer:

x = 14

Step-by-step explanation:

arc JL = 180° ( JL is a diameter ), then

arc KL = 180° - 31° = 149° , so

9x + 23 = 149 ( subtract 23 from both sides )

9x = 126 ( divide both sides by 9 )

x = 14

Answer:

X=14

Step-by-step explanation:

360-31-31=298

298/2=149

149-23=126

126/9=14

Answer:

a,d,e,f

Step-by-step explanation:

Trust me

Answer:

9

Step-by-step explanation:

4+(18-13)

4+(5)

9

mark me brainliest

Answer:

[tex]4i + 5i = 4i \times (1 + 5) = 4 \times 3 \times 2 \times 1 \times 6 = 144[/tex]

Answer:

12 degrees

Step-by-step explanation:

Answer: about 9.79 ft

Step-by-step explanation: To find the side length, we need to find the square root of the area because to find the area we need to square the side length.

Answer:

1) B

2) C

3) True

Hope this helps!

Pls mark brainliest!

Answer:

1: B

2:C

3: False

Hope this helps!

Answers:

Depending on how many tutorials you have to watch then yes, remember you can ask questions on brainly that needs to be answered man, we got your back

Answer:

270cm squared

area of shaded part rectangle is 180

are of triangle is 48 and 42 respectively you add the three to get 270

Answer:

Step-by-step explanation:

base times height

your base is 14 and height is 3

so your answer is 42

Answer:

x = 80 degrees

Step-by-step explanation:

First look at the upper triangle.  There are two 65 degree angles there, along with two equal sides.  The angles must sum up to 180 degrees.  Therefore:

2(65) + x = 180; thus, the value of x is 50 degrees.

Next, recognize that the vertical angles in the middle of the diagram are equal and are 50 degrees each.  Thus, the smaller triangle has two 50-degree angles.  Again we sum up the angles, obtaining 50 + 50 + x = 180, or x = 80 degrees

Answer:

método de sustitución, el de reducción y el de igualación

Step-by-step explanation:

te escribí 3 aunque tu me dijiste 2 pero yo ya escribí 3

pero espero que te alla servifo de algo mi respuesta dame corona si te sirvio

Answer: 32 ft

Step-by-step explanation: The ladder and the building and the ground form a right triangle will ladder being the hypotenuse....

pythagorean theorem      hyp2 = 252 + d2

                                                      41^2 - 25^2 = d^2             d =~~ 32 ft

cited from web2.0calc

Answer:

A

Step-by-step explanation:

Since she's not spending more than $32, the equation is 2h + 8 ≤ 32.

Isolate h to find the maximum number of hours she can rent the boat:

2h + 8 ≤ 32

First, subtract 8 from both sides.

2h ≤ 16

Then divide both sides by 2.

h ≤ 8

h, the number of hours, must be less than or equal to 8, so 8 is the maximum number of hours Bernice can rent the boat for.

Answer: 2.25

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

10

Answer:

7

Step-by-step explanation: Ok this coming from a 11 year old. if 7x3= 21 then add 4 its 25 simple

The Answer Is 7.5

Tangent and 8 makes a right triangle, which is great because you could find the diameter and divide it by 2 to find the radius.

64+d^2=289

d^2=225

d=15

15/2=7.5

Answer:

149cm^2

Step-by-step explanation:

big brain

Answer:

114cm²

Step-by-step explanation:

Okay, so you can split this thingy up into a rectangle and another rectangle, so that's what we're going to do (see pic below)

So now we take off that 7 from the 13:

13 - 7 = 6

So now we find the area of that little area:

6 x 5 = 30

Now we do the other rectangle:

12 x 7 = 84

Now we add them together:

84 + 30 = 114

So the area of the shape is 114cm²

hope this helps:)

The equivalent of the complex number expression is [tex]\sqrt{60i - 11}[/tex] is 2 + 15i

The complex number expression is given as:

[tex]\sqrt{60i - 11}[/tex]

Rewrite as:

[tex]a + bi = \sqrt{60i - 11}[/tex]

Take the square of both sides

[tex]a^2 + 2abi - b = 60i - 11[/tex]

By comparison, we have:

a^2 - b = -11

2ab = 60

Divide both sides by 2

ab = 30

Using a graphical tool, we have:

a = 2,b = 15

So, we have:

a + bi = 2 + 15i

Read more about complex numbers at:

https://brainly.com/question/10662770

#SPJ1

Answer:

x = 1.99359

Step-by-step explanation:

Answer: x  ≈  −  1.99825808  ,  1.99359054

Step-by-step explanation: