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3 years ago

Please Help!! It's urgent :)

Mathematics

2 answers:

Paha777 [63]3 years ago

8 0

Answer:

hope this helps

Step-by-step explanation:

For a.) I would do the simplist example possible and make all 3 angles equal. So you would divide 180° degrees by 3. This gives you 60° for each angle. That is still acute.

b.) complementary angles mean they add up to 90°

If one has to be greater than 45° you can so 68° and 22°.

c.) 100 - 10,10; 20,5; 50,2; 4,25

You can choose any pair for the length and width of the ones I put above. :)

d.) angle ABC can equal 32° and angle CBD can be 10°

miv72 [106K]3 years ago

6 0

Step-by-step explanation:

a, 90*, 90*, 90*

b, 135,135

c, 60,40

d, 152,166

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Find the value of each variable in the circle to the right. The dot represents the center of the circle.

MrMuchimi

9514 1404 393

Answer:

a = 57.5

b = 90

c = 65

Step-by-step explanation:

The measure of an inscribed angle is half that of the arc it intercepts. The angle at 'a' intercepts an arc of 115°, so its measure is (115/2)° = 57.5°

The inscribed angle at 'b' is a semicircle, 180°, so the measure of 'b' is (180/2)° = 90°.

The arc 'c' is the remainder of a semicircle after 115° have been taken away. Its measure is 180° -115° = 65°.

(a, b, c) = (57.5, 90, 65)

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3 years ago

Can someone show me how to solve this? and what formulas do i use?

guajiro [1.7K]

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Arch = Rect - (Sector - Triangle)

rect = 5.7*1.5

Sector = pi r^2 /4

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4 years ago

What is the definition of standard form of an equation?

Talja [164]

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4 years ago

Use a definite integral to find the area under the curve between the given x-values. f(x) = 3 x from x = 1 to x = 8

zhannawk [14.2K]

Answer: 94.5

Step-by-step explanation:

Given

Function is $f(x)=3x$ and the boundary is $x=1\ \text{to}\ x=8$

Integrating the function

$\Rightarrow I=\int_{1}^{8}f(x)dx\\\\\Rightarrow I=\int_{1}^{8}3xdx\\\\\Rightarrow I=\left ( \frac{3x^2}{2} \right )_1^8\\\Rightarrow I=1.5(8^2-1^2)=1.5(64-1)\\\Rightarrow I=94.5$

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3 years ago

A sample of 270 students who were taking online courses were asked to describe their overall impression of online learning on a

Luden [163]

Answer:

An 80% confidence intervals are (5.73 ,5.88)

Step-by-step explanation:

Given sample size (n) is = 270

The average score (μ) =5.81

and standard deviation σ= 0.99.

80% confidence interval:-

The 80% confidence interval of the z- value is 1.28 ( from z-table)

An 80% confidence interval is defined by sample mean ± 1.28 standard error

that is μ ± 1.28 σ/√n

now substitute values (5.81 ± 1.28(0.99/√270))

(5.81 - 1.28(0.0602),5.81 + 1.28(0.0602)

(5.81 -0.0770 ,5.81 -0.0770)

(5.73 ,5.88)

Conclusion:-

An 80% confidence intervals are (5.73 ,5.88)

Therefore the population mean 5.81 lies between (5.73 ,5.88) at 80% confidence intervals

5 0

3 years ago