3 years ago

Need help with problem solving asap.

Mathematics

1 answer:

deff fn [24]3 years ago

3 0

Answer:21543

Step-by-step explanation:

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A fair coin is flipped four times. Use a tree diagram to find the probability of observing exactly two heads.

Svetllana [295]

Answer:

0.25

Step-by-step explanation:

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An arithmetic sequence has this recursive formula:

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Answer:

Step-by-step explanation:

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Find the arc length of the semicircle. Either enter an exact answer in terms of π or use 3.14 and enter your answer as a decimal

cricket20 [7]

Answer:

The arc length of the semicircle is $5 \pi\ units$ or $15.7\ units$

Step-by-step explanation:

The complete question in the attached figure

we know that

The circumference of a semicircle is given by the formula

$C=\frac{1}{2}\pi D$

where

D is the diameter of the semicircle

we have

$D=10\ units$

substitute

$C=\frac{1}{2}\pi (10)$

$C=5 \pi\ units$ ----> exact value

Assume

$\pi =3.14$

$C=5(3.14)=15.7\ units$ ----> approximate value

therefore

The arc length of the semicircle is $5 \pi\ units$ or $15.7\ units$

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2 years ago

The area of a right triangle is 210 square inches. The height of the right triangle is 35 inches.

Semmy [17]

Answer:

37 inch

Step-by-step explanation:

Area of ∆ = ½ height x base

210 = ½ x 35 x base

12 = base

Using Pythagoras theorem,

=> hypotenuse = √height² + base²

=> hypotenuse = √35² + 12² = 37

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3 years ago