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yuradex [85]
3 years ago
12

Help on 4.) and 5.)!!!! 49 POINTS!!! A

Mathematics
2 answers:
attashe74 [19]3 years ago
7 0

Answer:

4=3/1

5=3 more pieces

Step-by-step explanation:

Andrews [41]3 years ago
5 0

4.  The reciprocal means flip so a  becomes 1/a


1/3  becomes 1 /(1/3) = 3


5.    6 divided by 1/2

copy dot flip

6 * 2/1 = 12

she has 12 pieces of string

she needs 15

15 -12 =3

She needs to cut 3 more pieces of string

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In any​ year, the weather can inflict storm damage to a home. From year to​ year, the damage is random. Let Y denote the dollar
krok68 [10]

Answer:

a. mean = 1000

standard deviation = 4358.9

b. expected value of average damage bar Y = 1000

probability bar y exceeds 2000 = 0.011

Step-by-step explanation:

we have p1 = 95%, y1 = 0, p2 = 5%, y2 = 20000

Mean = (0.95 * 0) + (0.05 * 20000)

= 1000

var(y) = E(y²) - E(Y)²

= we solve for E(y)²

= 0²*0.95 + 20000²*0.05

= 0 + 20000000

then the variance of y = 20000000 - 1000²

=20000000-1000000

= $19000000

standard  deviation is the square root of variance

= √19000000

= 4358.9

2.

a. Expected value of average is also the mean = 1000

b. we are to find probability that barY exceeds 2000

z=\frac{2000-1000}{\sqrt{19000000/100} }

= 1000/435.889

= 2.29

1-p(z≤2.29)

= 1 - 0.989

= 0.011

so the probability that barY exceeds 2000 is 0.011

8 0
3 years ago
What is the solution to the system of equations below?
Ymorist [56]

Answer:

6×+÷3=2+4×=6

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6 0
3 years ago
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Find x: 2(4x − 3) − 8 = 4 + 2x
MariettaO [177]
X = 3

2(4x - 3) - 8 = 4 + 2x

1. Distribute

8x - 6 - 8 = 4 + 2x

2. Collect like terms

8x - 14 = 4 + 2x

3. Collect like terms again (add 14 and subtract 2x)

6x = 18

4. Divide by 6

x = 3
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50 points!!! Please help ASAP!!!
Vika [28.1K]

Answer:

h (x)=-16x^(2)+3x+35 =

x-intercept(s): (3+√224932,0),(3−√2249 32,0)

y-intercept(s): (0,35)

3 0
2 years ago
Find the volume of a square pyramid with a base area of 18inch squared and the height of 4 inches
den301095 [7]
Vpyramid=1/3 times area of base times height
volume=1/3 times 18 square inches times 4in
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volume=24 cubic inches


the volume is 24 cubic inches
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3 years ago
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