All categories

3 years ago

Solve 3x+9 so it has no solution.

Mathematics

1 answer:

Serjik [45]3 years ago

5 0

Answer:

x = -3

Step-by-step explanation:

I hope you mean "no solution" as in 'equal to zero' because that's what I'm doing and what makes sense.

Start by setting the equation equal to zero.

3x + 9 = 0

Subtract the 9 from both sides to move it to the right side.

3x = -9

Divide the 3 from both sides to isolate the x.

x = -3

We can check that x = -3 is the correct answer by plugging it in and seeing if it equals zero.

3(-3) + 9

-9 + 9

You might be interested in

Which of the following expressions are equivalent to 3(4h + 2k) ?

nordsb [41]

Answer:

B, C, and D are all equivalent to 3(4h+2k)

Step-by-step explanation:

We use the distributive property to say 3(4h+2k)=12h+6k

"A" distributes to 12k+6h

"B" distributes to 12h+6k

"C" distributes to 6k+12h (associative property works)

"D" is already distributed to 12h+6k

So A is wrong, and B, C, and D are right

Hope this made sense!

3 0

3 years ago

Read 2 more answers

The measures of the angles of ∆ DEF are in the ratio 2:4:4. what are the measures of the angles?

REY [17]

Answer:

look at this image fpr answer .it is right

7 0

3 years ago

What is the equation of a line that passes through (-6,2) and has a slope of -(1)/(2)?

olganol [36]

Answer:

y= -1/2x+5

Step-by-step explanation:

4 0

2 years ago

HELP ASAP, PLEASE!!!!

GalinKa [24]

Using the t-distribution, as we have the standard deviation for the sample, we have that the test statistic is given by:

$t = \frac{-20 - 0}{\sqrt{\frac{32.66}{7}}}$

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is no difference, that is:

$H_0: \mu = 0$

At the alternative hypothesis, it is tested if there is a difference, that is:

$H_1: \mu \neq 0$

<h3>What is the test statistic?</h3>

The test statistic is given by:

$t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}$

The parameters are:

$\overline{x}$ is the sample mean.

$\mu$ is the value tested at the null hypothesis.

s is the standard deviation of the sample.

n is the sample size.

In this problem, $\mu = 0$ is tested at the null hypothesis, and the sample is: 20, -40, -40, 0, 20, - 60, -40, hence:

$\overline{x} = -20, s = \sqrt{32.66}, n = 7$ .

Hence, the test statistic is:

$t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{-20 - 0}{\frac{\sqrt{32.66}}{\sqrt{7}}}$

$t = \frac{-20 - 0}{\sqrt{\frac{32.66}{7}}}$

More can be learned about the t-distribution at brainly.com/question/16313918

5 0

2 years ago

What is the graph of f(x) = 100(0.7)x?

FromTheMoon [43]

A linear equation, as the exponent of x is one

3 0

3 years ago