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kicyunya [14]
2 years ago
11

I need help with algebra

Mathematics
1 answer:
gregori [183]2 years ago
5 0

Answer:

the answer I got is b=90

hope it helps

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Find the simultaneous equation x-2y=1,y^2-3xy+8=0​
Hitman42 [59]

Answer:

  (-2.2, -1.6), (3, 1)

Step-by-step explanation:

You don't have to go far to find the equations. They are right there in your problem statement. Perhaps you want to find the solutions to the equations.

Use the first equation to write an expression for x, then substitute that into the second equation:

  x = 2y +1

  y^2 -3(2y+1)(y) +8 = 0

  -5y^2 -3y +8 = 0

  -(5y +8)(y -1) = 0

  y = -8/5   or   y = 1

The corresponding values of x are ...

  x = 2(-8/5)+1 = -11/5

  x = 2(1) +1 = 3

The solutions are (x, y) = (-2.2, -1.6) and (3, 1).

5 0
2 years ago
HELP PLSS ANYONE? I'VE TO SUBMIT ASAP
Alenkinab [10]

x =14

Answer:

m\angle ABC =  51°

Step-by-step explanation:

11. By inscribed angle theorem:

83°=\frac{1}{2} \times (9x+40)°\\\\83°\times 2 = (9x+40)°\\166°= (9x+40)°\\166 = 9x + 40\\166 - 40 = 9x\\126 = 9x\\\\x = \frac{126}{9}\\\\\huge \red {\boxed {x = 14}}

12. Again by inscribed angle theorem:

(5x+11)°=\frac{1}{2} \times (16x-26)°\\\\2\times (5x+11)°= (16x-26)°\\(10x+22)°= (16x-26)°\\10x + 22 = 16x - 26\\22+26 = 16x - 10x\\48= 6x\\\\x = \frac{48}{6}\\\\\huge \purple{\boxed {x = 8}}\\m\angle ABC =  (5x+11)°\\m\angle ABC =  (5\times 8+11)°\\m\angle ABC =  (40+11)°\\\huge \orange{\boxed {m\angle ABC =  51°}} \\

7 0
3 years ago
The Carson family sent 500 text messages last month. Mrs. Carson sent 15 text messages; Mr. Carson sent 1; Cathi sent 104; and B
Llana [10]

Answer:

76%

Step-by-step explanation:

pls mark brainliest!

3 0
3 years ago
A local grocery store is running a marketing promotion on social media. They are randomly choosing a winner from the entrants th
AlladinOne [14]

Using it's concept, it is found that the odds that the winner shops in the store 4 or more times a week are given by: 9:41.

<h3>What is the odd of an event?</h3>

It is given by the <u>number of desired outcomes divided by the number of non-desired outcomes</u>.

Researching the problem on the internet, it is found that 18% of the winners shop in the store 4 or more times a week, while 82% do not, hence:

18:82 = 9:41

The odds that the winner shops in the store 4 or more times a week are given by: 9:41.

More can be learned about odds at brainly.com/question/25683609

3 0
2 years ago
1. x + 2x - 1 = 38<br> Inverse operation
Lena [83]

Answer:

x=13

Step-by-step explanation:

First, you add the x's together: 2x+x=3x

Now you have:3x-1=38

Add 1 to both sides: 3x=39

1 cancel on the left side of the equation

Divide 3 on both sides: x=39/3

3 cancels on the left side and 39 divided by 3 is 13:

x=13

Hope this helps!

6 0
3 years ago
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