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wariber [46]
2 years ago
15

How many variables are in the following expression 3x+4y+z

Mathematics
2 answers:
arsen [322]2 years ago
8 0

Answer:

3

Step-by-step explanation:

Murljashka [212]2 years ago
3 0

Answer: 3

Step-by-step explanation:

X,Y,Z

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Based on the survey results from 300 selected students in the Burbank School District (BSD), the 98% confidence interval used to
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Answer:

follows are the solution to this question:

Step-by-step explanation:

Please find the correct question in the attached file:

The formula for calculating the Confidence interval of proportion:

\to CI=\hat{p} \pm Z_{\frac{\alpha}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}\\\\\to  \hat{p}=\frac{\text{lower limit +upper limit}}{2}\\

      =\frac{0.48+0.60}{2}\\\\=\frac{1.08}{2}\\\\=0.54

The number of learners with access to working at home on a computer:

= 0.54 \times 300 \\\\=162

Lower limit =0.48

upper limit = 0.60

\to margin \ error = \frac{\text{upper limit - lower limit}}{2}\\

                          =\frac{0.60-0.48}{2}\\\\=\frac{0.12}{2}\\\\= 0.06

5 0
3 years ago
Help please?
Lemur [1.5K]

Answer:

4/5 to the 5th power

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Select all of the expressions which show how to convert 2.5 yards into inches.
PIT_PIT [208]

Answer:

90

Step-by-step explanation:

4 0
3 years ago
Find the volume and surface area of this prism.
mina [271]

Answer:

V = 408 cm cubed

SA = 558 cm squared

Step-by-step explanation:

To find the volume of a prism, multiply the area of the base by the height. This is 1/2 times width times height times length.

V =1/2 l*w*h =1/2* 6*8*17 = 408

To find the surface area of a prism, find the area of the triangular base and the area of each rectangular side.

Area of the base is A = 1/2 * b*h = 1/2 * 6 * 8 = 24. Since there are 2 bases, the area is 48.

Area of the rectangular side is A = b*h = 17*10 = 170. Since there are three, the area is 3*170 = 510.

The surface area of the prism is 48 + 510 = 558.

8 0
3 years ago
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