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Paladinen [302]
3 years ago
9

Help me ASAP

Mathematics
2 answers:
horrorfan [7]3 years ago
7 0

Answer:

x = 5,7

Step-by-step explanation:

8 < 11 ☑

10 < 11 ☑

10,6 < 11 ☑

11,4 < 11 ☒ ← FALSE STATEMENT; should be ">"

I am joyous to assist you anytime.

KonstantinChe [14]3 years ago
3 0

2 * 4 = 8

8 < 11 is true

2 * 5 = 10

10 < 11 is true

2 * 5.3 =  10.6

10.6 < 11 is true

2 * 5.7 = 11.4

11.4 < 11 is NOT true.

x = 5.7 is not a solution.

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Ind the roots of 3(x – 2)2 = 12.
blagie [28]

Answer:

x=4

Step-by-step explanation:

If you plug this in, you get 3(4-2)2=12. Simplify to 3 times 2 times 2, which equals 12. Stay Safe and Have a Magnificent Day!!!!!!;):)

6 0
3 years ago
Hallway measuring 90ft by 7ft requires half a fluid oz of cleaning solution per square foot. How much cleaning solution is requi
aliya0001 [1]

90 x 7 = 630 square feet total

0.5 fluid ounce per sq ft

630 x 0.5 = 315 fluid ounces are needed

7 0
3 years ago
Can someone please help me and explain​
Fiesta28 [93]

Answer:

0.23

Step-by-step explanation:

3 0
3 years ago
It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per nig
Kitty [74]

Answer: No , at 0.05 level of significance , we have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.

Step-by-step explanation:

Let \mu denotes the average hours of sleep per night.

As per given , we have

H_0:\mu=7\\H_a:\mu

, since H_a is left-tailed and population standard deviation is unknown, so the test is a left-tailed t -test.

Also , it is given that ,

Sample size : n= 22

Sample mean : \overline{x}=7.24

Sample  standard deviation : s= 1.93

Test statistic : t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}

i.e.  t=\dfrac{7.24-7}{\dfrac{1.93}{\sqrt{22}}}\approx0.58

For significance level \alpha=0.05 and degree of freedom 21 (df=n-1),

Critical t-value for left-tailed test= t_{\alpha, df}=t_{0.05,21}=- 1.7207

Decision : Since the test statistic value (0.58) > critical value  1.7207, it means we are failed to reject the null hypothesis .

[Note : When |t_{cal}|>|t_{cri}|, then we accept the null hypothesis.]

Conclusion: We have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.

6 0
3 years ago
Help find x. I believe it’s 13
aksik [14]

Answer:

m∠RST = 155°

m∠RSU = 102°

Step-by-step explanation:

m∠RST  = m∠RSU + m∠UST

12x - 1    = 9x - 15 + 53

12x - 9x = 1- 15 + 53

      3x   = 39

        x   = 39/3

         x = 13°

m∠RST  = (12x -1)° = (12 * 13 - 1)° =   (156 - 1 )° = 155°

m∠RSU = (9x -15)° = (9 * 13 - 15)° = ( 117 - 15)° = 102°

4 0
3 years ago
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