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2 years ago

A triangle has sides with lengths of 8 yards, 15 yards, and 19 yards. Is it a right triangle?

Mathematics

1 answer:

GrogVix [38]2 years ago

7 0

Answer:

No it is not a right triangle

Step-by-step explanation:

Because

8 x 2=16. 15 x 2=30

16+30=46

19 x 2=38

38 is not equal to 46 so it is not a right angle

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A random sample of 85 group leaders, supervisors, and similar personnel revealed that a person spent an average 6.5 years on the

strojnjashka [21]

Answer:

95% of confidence interval for the Population

( 6.1386 , 6.8614)

Step-by-step explanation:

Step( i ):-

Given random sample size 'n' =85

Mean of the sample size x⁻ = 6.5 years

Standard deviation of Population = 1.7 years

Level of significance = 0.95 or 0.05

Step(ii):-

95% of confidence interval for the Population is determined by

$(x^{-} - Z_{0.05} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.05} \frac{S.D}{\sqrt{n} })$

$(6.5 - 1.96\frac{1.7}{\sqrt{85} } , 6.5 + 1.96 \frac{1.7}{\sqrt{85} })$

( 6.5 - 0.3614 , 6.5 + 0.3614 )

( 6.1386 , 6.8614)

Conclusion:-

95% of confidence interval for the Population

( 6.1386 , 6.8614)

8 0

3 years ago

Given: tanA= -square root 15 What is the value of tan (A-pi/4)?

ANTONII [103]

Answer:D

Step-by-step explanation:

edge2020

4 0

2 years ago

Read 2 more answers

There are four blue marbles, an unknown number of red (r) marbles, and six yellow marbles in a bag. Which expression represents

MAXImum [283]

Answer:

There are a total of 4 + r + 6 marbles in the bag

The probability of a blue is $\frac{4}{10+r}$

The probability of a red is $\frac{r}{10+r}$

The probability of choosing a blue, replacing it and then a red is

$\frac{4}{10+r}$ × $\frac{r}{10+r}$ = [tex]\frac{4r}{100+20r+ r^{2} /[tex]

Step-by-step explanation:

6 0

2 years ago

Find an expression for the area of this shape ( plz show working out)

ankoles [38]

Answer:

this is your answer. thanks!!

8 0

3 years ago

Fraction that is less than 5/6 and has a denominator of 8

Evgesh-ka [11]

See 5/6 is obviously more than 1/2 so 4/8 works
also 3/8 or 2/8 or 1/8

if you want all fractions then
5/6=x/8
times 24 both sides
20=3x
divide 3
6 and 2/3=x
basically x/8 such that x<6 and 2/3

examples
6/8
5/8
4/8
3/8
2/8
1/8
I would use the odd ones since the even ones simplify to non-eight denomenators

7 0

3 years ago