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liraira [26]
2 years ago
10

One less than x is less than -1 or 3 more than x is greater than or equal to 7.

Mathematics
1 answer:
Karo-lina-s [1.5K]2 years ago
5 0

Answer:

x < 0 or x >= 4

Step-by-step explanation:

x - 1 < - 1

x < - 1 + 1

x < 0

x + 3 >= 7

x >= 7 - 3

x >= 4

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Whats 2 other ways to write this equation:<br> 40 = 19+7x
hodyreva [135]

Answer:

1: 7x+19=40

2: 19+7x=40

Step-by-step explanation:

7 0
3 years ago
In the figure, PQ is parallel to RS. The length of PQ is 2 cm; the length of
Rashid [163]

Answer:

Step-by-step explanation:

Parallel lines in this kind of triangle are always in a strict ratio of small to large or large to small based on how you look at it. So we have 4cm to 6cm, which is 2:3 ratio. We know the smaller side, but want the larger side, so we can set up 2/3 = 10/? the ? is 15.  

5 0
3 years ago
18. A set of data has a sample mean of 65.4 and a standard deviation of 1.2. If the sample size is 45, what is the 99% confidenc
Agata [3.3K]

Given:

Sample mean = 65.4

Standard deviation = 1.2

Sample size = 45

Confidence level = 99%

To find:

The confidence interval.

Solution:

The formula for confidence interval is

CI=\overline{x}\pm z^*\dfrac{s}{\sqrt{n}}

where, \overline{x} is sample mean, z* is confidence value, s is standard deviation and n is sample size.

Confidence value or z-value at 99% = 2.58

Putting the given in the above formula, we get

CI=65.4\pm 2.58\times \dfrac{1.2}{\sqrt{45}}

CI=65.4\pm 0.46

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CI=64.94\text{ and }65.86

Therefore, the correct option is D.

5 0
2 years ago
What is the square root of 75 in the simplest form
lesantik [10]

Answer:

5\sqrt{3}

Step-by-step explanation:

\sqrt{75} = \sqrt{5^{2}*3} =5\sqrt{3}

8 0
2 years ago
Read 2 more answers
Please help me!! I really need it!! I Could fail the 7th grade
babymother [125]

Answer:

Step-by-step explanation:

Price of one ticket   = $4

Price of t tickets = 4t

1) 4t + 72 > 400

   t >  (400-72)/4

2) 4t + 72 > 400      

4t + 72 - 72 > 400 - 72    {subtract 72 from both sides}

4t > 328

4t/4 > 328/4      {divide both sides  by 4}

t >  82

7 0
3 years ago
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