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3 years ago

Hi i need help plz it is 7/3 add 1/3. plz plz help

Mathematics

1 answer:

Tanzania [10]3 years ago

8 0

Answer: 8/3

Step-by-step explanation: To add like fractions, or fractions that have the same denominator, simply add the numerators and keep the original denominator.

<h2>7 + 1 = 8</h2><h2 /><h2>8/3 is the answer.</h2><h2 />

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HELP- PLS SOMEONE HELP ME SOB

BlackZzzverrR [31]

Answer:

150 degrees

Step-by-step explanation:

Use the equation below to find the sum of all the interior angles in this polygon:

(number of sides - 2)*180

number of sides = 6

(6-2)*(180) = 4*(180) = 720

Now that you know the total sum, subtract all other angles to find x:

720 - 90 - 162 - 101 - 96 - 121 = 150

5 0

2 years ago

You have been doing research for your statistics class on the prevalence of severe binge drinking among teens. You have decided

Serggg [28]

Answer:

(1.218 ; 1.322)

the confidence interval is appropriate

Step-by-step explanation:

The confidence interval :

Mean ± margin of error

Sample mean = 1.27

Sample standard deviation, s = 0.80

Sample size, n = 914

Since we are using tbe sample standard deviation, we use the T table ;

Margin of Error = Tcritical * s/√n

Tcritical at 95% ; df = 914 - 1 = 913

Tcritical(0.05, 913) = 1.96

Margin of Error = 1.96 * 0.80/√914 = 0.05186

Mean ± margin of error

1.27 ± 0.05186

Lower boundary = 1.27 - 0.05186 = 1.218

Upper boundary = 1.27 + 0.05186 = 1.322

(1.218 ; 1.322)

According to the central limit theorem, sample means will approach a normal distribution as the sample size increases. Hence, the confidence interval is valid, the sample size of 914 gave a critical value at 0.05 which is only marginally different from that will obtained using a normal distribution table. Hence, the confidence interval is appropriate

8 0

3 years ago

Beth can run 3 miles in 25.8 minutes. How long does it take her to run1 one mile you

Dmitry_Shevchenko [17]

Answer: 8.6

Step-by-step explanation:

25.8 divided by 3

3 0

3 years ago

Read 2 more answers

A firm buys components from two suppliers: 60 percent from supplier A and the rest from supplier B. It so happens that 9 percent

Llana [10]

Answer:

0.114,0.5263

Step-by-step explanation:

Given that a firm buys components from two suppliers:

A : 60% Defective 9%

B:40% Defective 15%

a) the probability that the next component the firm buys is defective

=prob purchased from A and defective + prob purchased from B and defective

= $0.60(0.09)+0.40(0.15)\\= 0.054+0.06\\=0.114$

b) the probability that the component that the firm buys is from supplier B if we know that it is defective

=Prob from B and defective/Prob defective

= $\frac{0.40(0.15)}{0.114} \\=0.5263$

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3 years ago

What did the friend do wrong in this equation?

rjkz [21]

Answer:

4x + 2x = 90 NOT 180.

Step-by-step explanation:

x = 15 is the correct answer.

4 0

3 years ago

Hi i need help plz it is 7/3 add 1/3. plz plz help​

Hi i need help plz it is 7/3 add 1/3. plz plz help