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2 years ago

Find the measure of angle b. And show work

Mathematics

1 answer:

zaharov [31]2 years ago

7 0

Answer:

From the above attachment we can conclude that the sum of the angle 'b' and 40° is 90° (right angle)

$b + 40 ^\circ = 90 {}^{ \circ} \\ b = 90 {}^{ \circ} - 40 {}^{ \circ} \\ \boxed{ b = 50 {}^{ \circ} }$

<u>b = 50°</u> is the right answer.

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Divide 12.33 by 9 and write the quotient. (Show steps of working

mina [271]

9514 1404 393

Answer:

1.37; see attached

Step-by-step explanation:

The steps of long division are shown in the first attachment.

My favorite way to do arithmetic of this sort is shown in the second attachment. (That is, use a calculator.)

5 0

3 years ago

What is the imgae point of (-2,-3) after a translation right 2 units and 4 up units?

kherson [118]

the image point of (-2,-3) after a translation right 2 units and 4 up units is (0,1) .

<u>Step-by-step explanation:</u>

Here we have , to find the image point of (-2,-3) after a translation right 2 units and 4 up units . Let's find out:

Initially we have the point as (-2,-3) , Following transformations are done :

a translation right 2 units :

The point is (-2,-3) , let $(x,y)=(-2,-3)$ . Translation is 2 units right , means there is change in x coordinate by +2 , i.e.

⇒ $(x,y)=(-2,-3)$

⇒ $(x+2,y)=(-2+2,-3)$

⇒ $(x+2,y)=(0,-3)$

a translation 4 up units:

The point is (0,-3) , let $(x,y)=(0,-3)$ . Translation is 4 units up , means there is change in y coordinate by +4 , i.e.

⇒ $(x,y)=(0,-3)$

⇒ $(x,y+4)=(0,-3+4)$

⇒ $(x,y+4)=(0,1)$

Therefore , the image point of (-2,-3) after a translation right 2 units and 4 up units is (0,1) .

5 0

2 years ago

cam hits the bullseye in 8 darts out of 15 throws. what is the experimental probability that came next throws will hit the bulls

Zigmanuir [339]

Answer:

A darts player practices throwing a dart at the bull’s eye on a dart board. Her probability of hitting the bull’s eye for each throw is 0.2.

(a) Find the probability that she is successful for the first time on the third throw:

The number F of unsuccessful throws till the first bull’s eye follows a geometric

distribution with probability of success q = 0.2 and probability of failure p = 0.8.

If the first bull’s eye is on the third throw, there must be two failures:

P(F = 2) = p

q = (0.8)2

(0.2) = 0.128.

(b) Find the probability that she will have at least three failures before her first

success.

We want the probability of F ≥ 3. This can be found in two ways:

P(F ≥ 3) = P(F = 3) + P(F = 4) + P(F = 5) + P(F = 6) + . . .

= p

q + p

q + . . . (geometric series with ratio p)

1 − p

(0.8)3

(0.2)

1 − 0.8

= (0.8)3 = 0.512.

Alternatively,

P(F ≥ 3) = 1 − (P(F = 0) + P(F = 1) + P(F = 2))

= 1 − (q + pq + p

= 1 − (0.2)(1 + 0.8 + (0.8)2

)

= 1 − 0.488 = 0.512.

Since p = 0.8 and q = 0.2, the expected number of failures before the first success

E[F] = p

0.8

0.2

= 4.

7 0

2 years ago

Read 2 more answers

Is square FGHI congruent to square QRST?

lutik1710 [3]

The answer is A they are congruent and fghi was shifted 7 to the left and 5 up to create qrst

8 0

3 years ago

Read 2 more answers

Point C'(-4,-3)C

Arturiano [62]

Answer:

i very diffucult question

6 0

3 years ago