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sdas [7]
2 years ago
8

Equation 1 -3x -5 = 16 Equation 2 -4 (y - 2) = 12 What is the value of x and y

Mathematics
1 answer:
dangina [55]2 years ago
6 0

Answer: Um, the value of x and y is x=–7, y=–1, I’m not sure my answer is going to be wrong or right, please tell me the correct answer.

Step-by-step explanation:

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Pls help i give u brainliest and 5 stars ​
Umnica [9.8K]

Answer:

Step-by-step explanation:

Diameter = 14 cm

r = 14/2 = 7 cm

Outer surface area of hemisphere =2πr²

      = 2π*7*7

      = 98π cm²

3 0
2 years ago
Read 2 more answers
20=2(r+7)<br> I need help with this equation
DochEvi [55]
Hi there! :) The answer to your question is 3. First you do parenthesis r=3.
3+7=10, then you do 10*2=20. That is how you solve the problem.


Hope I helped! :)
( Mark as Brainliest Answer! Thank you! :)
8 0
3 years ago
Read 2 more answers
what about this one? is it correct? I am all done but would like to check if they are alright since I am so so rounding
Nutka1998 [239]
They're all correct! Nice job :)
7 0
3 years ago
1400 dollars is placed in an account with an annual interest rate of 5.5%. to the nearest year, how long will it take for the ac
olga_2 [115]

It will take 19 years and 6 months for the account value to reach 2900 dollars

Step-by-step explanation:

Given

Principal amount = 1400 dollars

Rate = 5.5 %

Final value = A = 2900

We have to find t

So,

The formula for simple interest is:

A = P(1+rt)

Putting values

2900 = 1400(1+0.055.t)\\\frac{2900}[1400} = 1+0.055t\\2.071 = 1+0.055t\\2.071-1=0.055t\\1.071 =0.055t

Dividing both sides by 0.055

\frac{0.055t}{0.055} = \frac{1.071}{0.055}\\t = 19.47\ years

Rounding off to nearest tenth

19.5 years

Hence,

It will take 19 years and 6 months for the account value to reach 2900 dollars

Keywords: Interest, simple interest

Learn more about interest at:

  • brainly.com/question/2654504
  • brainly.com/question/2654231

#LearnwithBrainly

6 0
3 years ago
Write and equation on the line that passed through (0,-1) and is perpendicular to the line y =1/9x+2
Marat540 [252]

Answer:

y=-9x-1

Step-by-step explanation:

since it is perpendicular, the slope must be the opposite reciprocal (-9x) and now we plug the coordinates in, -1=0+b, b is -1

5 0
2 years ago
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