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4 years ago

I have a test In math Tommorow and its a make or break situation for my grade I really need help with this question!

Mathematics

2 answers:

irina [24]4 years ago

8 0

I was just in the same situation, you got this. the answer is A.

Svetlanka [38]4 years ago

6 0

The answer is A. Good Luck on your test tomorrow! :)

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How many real solutions does this system of equations have? xy = 9<br> y = 3x - 1

tekilochka [14]

Answer:

two real, unequal roots

Step-by-step explanation:

y is definied as y = 3x - 1. Substitute 3x - 1 for y in xy = 9, obtaining:

x(3x - 1) = 9. Then:

3x^2 - x - 9 = 0. In this quadratic, the coefficients are a = 3, b = -1 and c = -9.

Calculating the discriminant b^2 - 4ac, we get (-1)^2 - 4(3)(-9), or 1 + 108, or 109. Because the discriminant is positive, we have two real, unequal roots.

6 0

3 years ago

Citizens less than 18 years old are not allowed to vote define a variable and write an inequality for the ages of citizens who a

Marrrta [24]

Answer:

$x < 18$

Step-by-step explanation:

We are given the following information in the question:

"Citizens less than 18 years old are not allowed to vote"

We define a variable x such that x represents the age of citizens.

We have to write a relationship with the help of an inequality for the ages of citizens who are not allowed to vote.

Citizens less than 18 are not allowed to vote.

So x should be less than 18.

This can be written as:

$x < 18$

is the required inequality for the ages of citizens who are not allowed to vote.

8 0

3 years ago

John is playing a gamr of darts. The probability that he throws a dart into the center of the dart board (bulls eyes) is 1/10. T

dangina [55]

Answer:

2/5

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

assume the the parent graph is y=x^2-2 write the equation of the parabola that would move it down 5 units

REY [17]

Answer:

Y= 1 (x^2-2)-5

Step-by-step explanation:

Use vertex form: y= a(x-h)+<u>k: k is what shifts the parbola up or down. Positive shifts it up while negative shifts it down.</u>

<u />

6 0

3 years ago

William is planning to buy a guitar for $35.95. The sales tax rate is 8.25%. He wants to be sure he has enough money. How much w

hram777 [196]

A.) 38.92 the sales tax is $2.97 so 35.95 + 2.97 = 38.92

3 0

3 years ago