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stepladder [879]
3 years ago
12

33 more than the product of 7 and a number x is less than 26.

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0
7x +33 < 26 isolate the term with a variable by subtracting 33
7x < -7 divide by 7
x < -1
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Please help. I need to get too 80%
anyanavicka [17]

Answer:

\frac{3}{500}

Step-by-step explanation:

Start by converting 5 meters to centimeters. Note 1 meter = 100 centimeters.

We can set up a unit converter:

5m(\frac{100cm}{1m})

The meters cancel out leaving us with:

5*100cm=500cm

The scale factor is:

\frac{drawing}{real\ life}=\frac{3cm}{500cm}=\frac{3}{500}

3 0
2 years ago
What is x?<br> plz, help with my homework.
scZoUnD [109]

Aswr:

i got undefined

Stp-by-stp explntin:

8 0
3 years ago
9·8·7! is equivalent to:<br><br> 9 x 8 x 7<br> 72 x 5,040<br> 504!
liq [111]

Answer:

\large\boxed{9\cdot8\cdot7!=72\times5,040}

Step-by-step explanation:

n!=1\cdot2\cdot3\cdot...\cdot n\\\\\text{Therefore}\\\\7!=1\cdot2\cdot3\cdot4\cdot5\cdot6\cdot7=5,040\\\\9\cdot8=72\\\\\text{Finally:}\\\\9\cdot8\cdot7!=72\times5,040

8 0
3 years ago
Read 2 more answers
50 random teenagers were asked how many hours a day they use their phone. They spent an average of 7 hours a day with a standard
tatyana61 [14]

Answer:

The margin of error for the true mean number of hours a teenager spends on their phone is of 0.4 hours a day.

Step-by-step explanation:

We have the standard deviation of the saple, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 50 - 1 = 49

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 49 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2\frac{1.3}{\sqrt{50}} = 0.4

In which s is the standard deviation of the sample and n is the size of the sample.

The margin of error for the true mean number of hours a teenager spends on their phone is of 0.4 hours a day.

4 0
3 years ago
a circle with radius 3 has a sector with a central angle of 17/9 pi radians. what is the area of the sector?
r-ruslan [8.4K]

Answer:

The area of the sector is 26.69

Step-by-step explanation:

First of all we need to calculate the area

To solve this problem we need to use the area formula of a circle:

a = area

r = radius =   3

π = 3.14

a = π * r²

we replace with the known values

a =  3.14 *  (3)²

a =  3.14 * 9

a = 28.26

The area of the circle is 28.26

A complete circle has 2pi radians

We divide 17/9 pi by 2pi and obtain the fraction of the total circle

(17pi/9) / 2pi = 17/18

we multiply this fraction with the area of the circle and obtain the area of the sector

28.26  * 17/18 = 12.43cm

The area of the sector is 26.69

6 0
3 years ago
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