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3 years ago

7

the measure of one of the angles of a triangle is 35 degrees, the sum of the measures of the other two angles is 145 degrees and

the difference between their measures is 15 degrees. what are the measures of the unknown angles?

1 answer:

kozerog [31]3 years ago

7 0

80 and 65 are the measurements

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Naddik [55]

Answer; 47.27 Inches

Let the height of Dagne be x.

Now we are told that she can do a vertical jump that is 27.5% of her height. This is represented as 0.275x.

Now we are told the height she can jump is 13.2. Thus;

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3 years ago

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Stells [14]

<u>Answer with explanation:</u>

As per given , we have

A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72.

i.e. n= 50

Degree of freedom = n-1=49

$\overline{x}=3.1\ mm$

$s=0.72\ mm$

The point estimate of the population mean is equals to the sample mean.

i.e. The best estimate for the length of gribbles= 3.1 mm

Also, population standard deviation is unknown , then the confidence interval would be :

$E=t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}$

For df= 49 and significance level of 0.05 , the t- value (using t-distribution table) would be :

$t_{0.05/2, 49}=t_{0.025, 49}= 2.010$

Now, Margin of error : $E=(2.010)\dfrac{0.72}{\sqrt{50}}$

$=0.204664986747\approx0.20$

95% confidence interval : $(\overline{x}-E,\ \overline{x}+E)$

$i.e.\ (3.1-0.20, 3.1+0.20)=(2.90,\ 3.30)$

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4 years ago

If it takes 7.1 pounds of seed to plant one acre of grass, how many acres can be planted with 9.94 pounds of seed?

AlexFokin [52]

Answer:

70.574

Step-by-step explanation:

7.1 × 9.94= A

9.94

7.1

-------

70.574

A= 70.574

(when multiplying decimals do not line up the dot and solve it as if there was no decimals point. when you get your answer count the amount of digits on the right side of the number going to the left on your answer.

in this case there are three digits on the right side of the decimals you count three spaces to the left of your answer wich is 574. put the decimal point infront of the 5 and you get you answer. 70.574

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3 years ago

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tia_tia [17]

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