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MA_775_DIABLO [31]
2 years ago
5

It cost Brody $9.80 to send 196 text messages. How many text messages did he send if he spent $4.20? *

Mathematics
1 answer:
Dvinal [7]2 years ago
3 0

Answer:

84

Step-by-step explanation:

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Need help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!
zvonat [6]
The second one would be 4 inches.
8 0
2 years ago
Sin(2x+30°)=1 <br> Tìm x <br> Cảm ơn vì giúp đỡ
Pie

Answer:

Step-by-step explanation:

This question is asking us to find where sin(2x + 30) has a sin of 1. If you look at the unit circle, 90 degrees has a sin of 1. Mathematically, it will be solved like this (begin by taking the inverse sin of both sides):

sin^{-1}[sin(2x+30)]=sin^{-1}(1)

On the left, the inverse sin "undoes" or cancels the sin, leaving us with

2x + 30 = sin⁻¹(1)

The right side is asking us what angle has a sin of 1, which is 90. Sub that into the right side:

2x + 30 = 90 and

2x = 60 so

x = 30

You're welcome!

4 0
3 years ago
For brett's birthday his mother gave out colorful birthday hats that were cone shaped. the opening of the bottom of the hat was
nika2105 [10]
The volume of cone is calculated by the formula V= \frac{1}{3} \pi R^2H, where H is a height of cone and R is a radius of the bottom.
In your case, R=3 cm and R=7 cm. Then V= \frac{1}{3} \pi* 3^2*7= \frac{63\pi}{3} =21\pi.
Answer: The volume of candy is 21π.
4 0
3 years ago
Pls pls help me I need it and the other one pls guys
snow_lady [41]

do u need all the answers?


3 0
3 years ago
The sum of the first three terms of a sequence is 6 and the fourth term is 16
Sati [7]

Answer:

              a₁ = -5, d = 7,  a₂ = 2, a₃ = 9, a₄ = 16

equation of sequence:    \boxed{\bold{a_n=7n-12}}

Step-by-step explanation:

a₁ + a₂ + a₃ = 6    

a₁ + a₁ + d + a₁ + 2d = 6

3a₁ + 3d = 6

a₁ + d= 2     ⇒ a₁ = 2 - d

a₄ = 16

a₁ + 3d = 16

2 - r + 3d = 16

2d = 14

d = 7

a₁ = 2-7 = -5

a₁ = -5, d = 7   ⇒  a₂ = -5+7 = 2, a₃ = 2+7 = 9, a₄ = 9+7 = 16

equation of arithmetic sequence:

a_n=a_1+d(n-1)\\\\a_n=-5+7(n-1)\\\\\underline{a_n=7n-12}

6 0
2 years ago
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