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n200080 [17]
3 years ago
15

A triangle has one angle that measures 40degrees and another angle that measures 38 degrees. What is the measure of the triangle

s third angle?
A)12
B)102
C)78
D)178
Mathematics
2 answers:
vredina [299]3 years ago
8 0
The measurement of the triangles third side is 78 !


g100num [7]3 years ago
8 0

Answer:

B)102 because 40+38=78 and the total degrees for a triangle is 180° , there for 180-78=102

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The following information is obtained from two independent samples selected from two normally distributed populations.
AysviL [449]

A. The point estimate of μ1 − μ2 is calculated using the value of x1 - x2, therefore:

μ1 − μ2 = x1 – x2 = 7.82 – 5.99

μ1 − μ2 = 1.83

 

B. The formula for confidence interval is given as:

Confidence interval = (x1 –x2) ± z σ

where z is a value taken from the standard distribution tables at 99% confidence interval, z = 2.58

and σ is calculated using the formula:

σ = sqrt [(σ1^2 / n1) + (σ2^2 / n2)]

σ = sqrt [(2.35^2 / 18) + (3.17^2 / 15)]

σ = 0.988297

 

Going back to the confidence interval:

Confidence interval = 1.83 ± (2.58) (0.988297)

Confidence interval = 1.83 ± 2.55

Confidence interval = -0.72, 4.38

3 0
3 years ago
What is the volume of a cylinder, in cubic centimeters, with a height of 2 centimeters
harina [27]

Answer:

<h2>         V ≈ 628.3 cm³</h2>

Step-by-step explanation:

Volume of cylinder:  V = π×r² × h

diameter = 20 cm  ⇒  r = 10 cm

h = 2 cm

Volume:

V = π×(10)²×2 = 200π cm³ = 628.318.... cm³ ≈ 628.3 cm³

7 0
3 years ago
What fraction of two pounds is fifty pence?
EastWind [94]
1/4

There are 100 pence in a pound, so 2 pounds is 200 pence. 50 is 1/4 of 200.
5 0
3 years ago
Two divers are swimming at different depths below sea level. One diver is at -25.5 ft. The other diver is at -40.75 ft. How far
-Dominant- [34]

Answer:

66.25 ft

Step-by-step explanation:

25.5 + 40.75

66.25

They are 66.25 feet away from each other.

Please let me know if I'm wrong!

5 0
3 years ago
5 5/6 divided by 6 1/8 is
maw [93]
5 5/6 = 35/6
6 1/8 = 49/8

35/6 divided by 49/8=
35/6 x 8/49
= 280/294
Simplified form: 20/21
4 0
3 years ago
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