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mario62 [17]
3 years ago
8

For which equation is b = 5 not the solution? A. 8 - b = 13 B. B + 6 = 11 C. B + 4 = 9 D. 12 - b = 7

Mathematics
2 answers:
guajiro [1.7K]3 years ago
7 0

Answer:

A

Step-by-step explanation:

8-5=3 not 13

AlekseyPX3 years ago
5 0

Answer: A

Step-by-step explanation: 8 - 5 = 3 not 13

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Which value, when placed in the box, would result in a system of equations with infinitely many solutions?
Fantom [35]

Answer:

<h2>If we placed the number 10 in the box, we obtain a system of equations with infinitely many solutions.</h2>

Step-by-step explanation:

The given system is

y=2x-5\\2y-4x=a

<em>It's important to know that a system with infinitely many solutions, it's a system that has the same equation</em>, that is, both equation represent the same line, or as some textbooks say, one line is on the other one, so they have inifinitely common solutions.

Having said that, the first thing we should do here is reorder the system

y=2x-5\\2y=4x+a

This way, you can compare better both equations. If you look closer, observe that the second equation is double, that is, it can be obtained by multiplying a factor of 2 to the first one, that is

y=2x-5\\2y=4x-10

So, by multiplying such factor, we obtaine the second equation. Observe that a must be equal to 10, that way the system would have infinitely solutions.

Therefore, the answer is 10.

4 0
3 years ago
Tan A = opp/adj equals to what<br>​
vaieri [72.5K]

Answer:

I need more information to answer this. Please provide more context

Step-by-step explanation:

SOHCAHTOA

SIN: Opposite/hypo

COS: Adj/Hyp

TAN: Opp/Adj

4 0
3 years ago
Simplify: 3x^2-8x+4 and show work please
Bad White [126]

believe what you're asking is to turn the trinomial into two binomials

So you first have to get 3x²; the only way to get this is

(3x    )(x     )     when multiplying that, you would get 3x²

when dealing with the -8x and the 4, you must find numbers that are factors of four (when multiplied together they will equal 4) and will multiply with the x's to get -8

(3x-2)(x-2)

you can tell that this is the answer because when you multiply though you will get:

3x-2x²-6x+4

or: 3x²-8x_4

Hope this helped


5 0
3 years ago
Which of the following is the surface area of the right cylinder below?
yarga [219]

Answer:

if it is TSA- 396 or 395.64

if it is CSA- 88 or 87.92

Step-by-step explanation:

r=7

h=2

TSA= 2 pi r(r+h)

=2*22/7*7*9= 396

<em>CSA</em>= 2 pi r h

2*22/7*7*2=88

when you use pi as 3.14 instead of 22/7 you get the answer with the decimal symbol.. in such case the TSA would be 395.64 and CSA would be 87.92

6 0
3 years ago
Read 2 more answers
If you buy something at a 20% discount off the listed price of $ 97, but pay a sales tax of 10% after the discount is applied, h
kaheart [24]
$85.36 is the correct answer
8 0
3 years ago
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