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PtichkaEL [24]
2 years ago
6

EASY MATH PLEASE HELP!! : )

Mathematics
2 answers:
Mademuasel [1]2 years ago
8 0

120

10 x 8 = 80

8 x 5 = 40

80 + 40 = 120

Oksanka [162]2 years ago
4 0

Answer:

is it 40

Step-by-step explanation:

6×10=60. 4×5=20

60-20=40

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A salesman normally makes a sale​ (closes) on ​% of his presentations. Assuming the presentations are​ independent, find the pro
Tamiku [17]

Answer:

(a)\ 0.0864

(b)\ 0.096

(c)\ 0.24

(d)\ 0.936

Step-by-step explanation:

Given

p \to close

q \to fail to close

p = 60\%

p = 0.60

First, calculate the value of q

Using complement rule

q = 1 - p

q = 1 - 0.60

q = 0.40

So, we have:

p = 0.60 and q = 0.40

Solving (a): Fails to close on the 4th attempt

This means that he closes the first three attempts. The event is represented as: p p p q

So, we have:

Pr = p*p*p*q

Pr = p^3*q

Pr = 0.60^3*0.40

Pr = 0.0864

Solving (b): He closes for the first time on the 3rd attempt

This means that he fails to close the first two attempts. The event is represented as: q q p

So, we have:

Pr = q * q * p

Pr = q^2 * p

Pr = 0.40^2 * 0.60

Pr = 0.096

Solving (c): First he closes is his 2nd attempt

This means that he fails to close the first. The event is represented as: q p

So, we have:

Pr = q * p

Pr = 0.40 * 0.60

Pr = 0.24

Solving (d): The first he close is one of his 3 attempts

To do this, we make use of complement rule

The event that he does not close any of his first three attempts is: q q q

The probability is:

Pr = q*q*q

Pr = q^3

The opposite is that the first he closes is one of the first three

So, we have:

Pr' = 1- Pr --- complement rule

Pr' = 1- q^3

Pr' = 1- 0.40^3

Pr' = 1- 0.064

Pr' = 0.936

4 0
2 years ago
LMN is a straight angle. Find m LMP and m NMP​
viva [34]

Answer:

(-16x + 13)° + (-20x + 23)° = 180° ( St. angle)

-16x° + 13° - 20x° + 23° = 180°

-4x° + 36° = 180°

-4x° = 180°-36°

-4x° = 144°

-x° = 144°/4

-x° = -36°

x° = 36°

<u>Minus</u><u> </u><u>Minus</u><u> </u><u>cut</u>

<u>I</u><u> </u><u>hope</u><u> </u><u>you</u><u> </u><u>can</u><u> </u><u>know</u><u> </u><u>this</u><u> </u><u>answer</u>

3 0
2 years ago
Make the following conversion. 420 hg = _____ cg 4200000 420000 0.0420 0.00420
Otrada [13]
Using the standards of conversions, we will find that 1 hg is equivalent to 10000 cg.
Therefore, to convert 420 hg to cg, all you have to do is cross multiplication as follows:
420 hg = (420 x 10000) / 1 = 4200000 cg

The correct choice is: 4200000
7 0
2 years ago
Read 2 more answers
How many solutions does the system have? { y = − 7 x + 8 y = − 7 x − 8 ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ y=−7x+8 y=−7x−8 ​
svp [43]

Answer:

woooo that is difficult

3 0
2 years ago
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Find the height of a clock tower if the angle of elevation from a horizontal point 430 m from its base is 40°.
zaharov [31]

\\ \sf\longmapsto tan40=\dfrac{P}{430}

\\ \sf\longmapsto 0.83=\dfrac{P}{430}

\\ \sf\longmapsto P=430(0.83)

\\ \sf\longmapsto P\approx361m

  • P=Height of tower

5 0
2 years ago
Read 2 more answers
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