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Pavlova-9 [17]
3 years ago
14

Maria solved the equation -5 n = -12. Her answer was n = 2. She is fairly confident about her answer, but wants to do a quick ch

eck of her solution using estimation. Which of the following shows a good check of her answer?
Mathematics
1 answer:
777dan777 [17]3 years ago
3 0
Plug in 2 to see if she is correct. Hope this helps!
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Which system of equations is represented by the graph?
vekshin1

Answer:

\large\boxed{C)\ \left\{\begin{array}{ccc}y=x\\\\y=\dfrac{-x+10}{x-4}\end{array}\right}

Step-by-step explanation:

We have the points

(-2 , -2) → x = -2 and y = -2 → x = y

(5, 5) → x = 5 and y = 5 → x = y

The equation of a line is y=x

The hyperbola has the vertical asymptote x = a and the horizontal asymptote y = -1.

Therefore the second equation is:

y=\dfrac{a}{x-4}-1=\dfrac{a}{x-4}-\dfrac{x-4}{x-4}=\dfrac{a-(x-4)}{x-4}=\dfrac{a-x+4}{x-4}

Where a > 0.

The corresponding equation in the solutions to choose is:

y=\dfrac{-x+10}{x-4}

3 0
3 years ago
Cassie needs at least $140 to buy a graphing calculator for math class. Currently she has $30 saved and her neighbor tells her s
sergij07 [2.7K]

Answer: $30 + $10h > $140.

Step-by-step explanation: Currently Cassie has $30, so that is the fixed amount of money she has. She needs $140 dollars, so this will be on the left side of your inequality with a "greater than symbol". Cassie can earn $10 an hour, use the variable "h" to represent the number of hours she will work. Set your inequality like this:

$30 + $10h > $140.

The reason why we use a "greater than" sign (>) is that the amount of money Cassie earns needs to be greater than the price of the calculator to be able to buy it.

3 0
3 years ago
Y=5x+5 is the equation of a straight line graph. What is its gradient?
Nikolay [14]

Answer:

5

Step-by-step explanation:

The equation of a straight line is :

y=mx+c

where m is the gradient and c is the y-intercept

so if m equals 5 then the gradient is 5

6 0
2 years ago
Read 2 more answers
What fractions are equivalent to 9/18
sergey [27]
Equivalent fractions are fractions that can be simplified down to the same thing.

For example, 9/18 can be simplified down to 1/2

So, 1/2, 3/6, 4/8, 5/10, 6/12, etc are all equivalent fractions because they too can be simplified down to 1/2
5 0
3 years ago
Read 2 more answers
65000÷9330
Nataly [62]

Step-by-step explanation:

1.answer is 6.9667738478

2 answer is 42.872454448

3answer is 14.1339764202

4answer is 0.0857449089.

8 0
3 years ago
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