All categories

2 years ago

Which value for x makes the open sentence true. 4•3 -2x < X2 -2

2 answers:

4 0

First subtract 12 from both sides, then subtract 2x from both sides, multiply both sides by -1, then divide by 4.

x > 3.5

bulgar [2K]2 years ago

3 0

From using order of operations I got x < -7

You might be interested in

Please help answer ASAP

sweet-ann [11.9K]

0.77875...

which, I'm assuming, they want you to round to the nearest hundredth? So, .78?...

6 0

2 years ago

Read 2 more answers

Can anyone help me with math , its a test.

Solnce55 [7]

Yea I can help:)! What is it???

4 0

2 years ago

Read 2 more answers

What is the experimental probability that Dan will roll a number 3 the next time he rolls the number cube?

Bad White [126]

The experimental probability changes every time he rolls the die but if its just the next roll he has a 1/6 chance of getting a 3

4 0

3 years ago

Help pls, it's due in 20 minutes

satela [25.4K]

Answer:

Step-by-step explanation:

3 (5+1) divided by 3 to the second power = 2

8 divided by 4 times 2 = 4

7 + 2.4 = 9.4

i hope this helps god bless

8 0

2 years ago

Read 2 more answers

A simple random sample of size nequals40 is drawn from a population. The sample mean is found to be 103.9, and the sample stand

yan [13]

Answer:

There is enough evidence to support the claim that the population mean is greater than 100

Step-by-step explanation:

Step 1: We state the hypothesis and identify the claim

$H_0:\mu=100$ and $H_1:\mu \:>\:100$ (claim)

Step 2: Calculate the test value.

$t=\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$

$\implies t=\frac{103.9-100}{\frac{21.9}{\sqrt{40} } }=1.1263$

Step 3: Find the P-value. The p-value obtained from a calculator is using d.f=39 and test-value 1.126 is 0.134

Step 4: We fail to reject the null hypothesis since P-value is greater that the alpha level. (0.134>0.05).

Step 5: There is enough evidence to support the claim that the population mean is greater than 100.

Alternatively: We could also calculate the critical value to obtain +1.685 for $\alpha=0.05$ and d.f=39 and compare to the test-value:

The critical value (1.685>1.126) falls in the non-rejection region. See attachment.

NB: The t- distribution must be used because the population standard deviation is not known.

5 0

3 years ago