The Academic Quiz advisor needs to choose the top member to compete in a final challenge.

-x^2+26х-25=0 Через дискриминант пожааалуйста заранее спасибо

STALIN [3.7K]

Answer:

wjdkjl

Step-by-step explanation:

5 0

3 years ago

I'll mark brainliest pls help! im stuppid

bearhunter [10]

Answer:

C.) Supplementary angles.

Step-by-step explanation:

Because angles a and b add up to 180 degrees.

4 0

3 years ago

Read 2 more answers

9/10

SIZIF [17.4K]

Answer: 90%

Step-by-step explanation: To write a fraction as a percent, first remember that a percent is a ratio of a number to 100.

So to write 9/10 as a percent, we need to find a fraction

equivalent to 9/10 that has a 100 in the denominator.

We can do this by setting up a proportion.

So we have $\frac{9}{10} = \frac{n}{100}$ .

Now, we can use cross-products to find the missing value.

So we have (9)(100) which is 900 is equal to (10)(n) or 10n.

So we have 900 = 10n.

Next, dividing both sides of the equation by 10, we have 90 = n.

So, 9/10 is equal to 90/100 or 90%.

7 0

3 years ago

What is y= 6/5x+9 written in standered form?

8090 [49]

Standard form, move the variables to the left-hand-side, leave the constant on the right-hand-side, usually the "x" comes first,

$\bf y=\cfrac{6}{5}x+9\implies -\cfrac{6}{5}x+y=9$

4 0

3 years ago

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2). Write an equation and solve. You will not be given credit for your answer if you do not include your equation! This month's

Helga [31]

Answer:

Equation is: x+15.27 = 72.50
Solution to that equation: x = 57.23
Interpretation: Last month's phone bill was $57.23

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Explanation:

We'll make x the value of last month's phone bill. So if lets say x = 50, this means that last month's phone bill was $50. We don't know yet if x = 50 is the actual solution or not.

We're told that "This month's cell phone bill was for $15.27 more than last month's cell phone bill". This means this month's bill, in terms of x, is x+15.27 dollars. Whatever x is, we add 15.27 onto it getting this month's bill. This works because x is really a placeholder for a number.

Going back to x = 50, that would mean this months bill is x+15.27 = 50+15.27 = 65.27 dollars. We can see that we don't reach 72.50 that we're told the current months bill actually is. Since we don't have a match, this means x = 50 is too small. We can guess and check our way to hopefully land on the answer. However, using algebra is the most efficient method.

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The equation we need to solve is: x+15.27 = 72.50

This is because x+15.27 represents this month's bill and so does the 72.50, as your teacher gave in the instructions.

To solve this equation, we'll undo the "plus 15.27" to isolate x fully. The opposite of addition is subtraction. We'll subtract 15.27 from both sides

x+15.27 = 72.50

x+15.27-15.27 = 72.50-15.27

x = 57.23

Last month's phone bill was $57.23

As a check, adding 15.27 onto last month's bill should get us to 72.50

x+15.27 = 57.23+15.27 = 72.50

It works out, so we've confirmed the answer.

5 0

3 years ago