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3 years ago

HELP I WILL MARK YOU AS A BRAINLIEST!!!

Mathematics

1 answer:

vesna_86 [32]3 years ago

8 0

<h2><em>3 1/2 - 1 1/3 = 2 1/6.</em></h2><h2><em>3+1/2−1−1/3</em></h2><h2><em>Rewrite it with everything separated.</em></h2><h2><em>Solve the whole numbers.</em></h2><h2><em>3 - 1 = 2.</em></h2><h2><em>Find the LCD of The Fractions.</em></h2><h2><em>LCD is 6.</em></h2><h2><em>3/6 - 2/6 = 1/6.</em></h2><h2><em>2 + 1/6 = 2 1/6.</em></h2><h2><em>She used 2 1/6 gallons of paint. Hope this helps and have a Nice day...! o/</em></h2>

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Delta makes 12-volt car batteries. These batteries are known to be normally

blondinia [14]

Answer:

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = 0.5188

The percentage of that Delta car batteries last between three and four years

P(3≤X≤4) = 52%

Step-by-step explanation:

<em>Given that the sample size n =12 -volt car batteries</em>

<em>Let 'X' be a Random variable in a normal distribution</em>

<em>Given that mean of the normal distribution = 45 months</em>

<em>Given that the Standard deviation of the normal distribution = 8months</em>

<u><em>Step(ii):-</em></u>

Let X₁ = 3 years = 12 × 3 = 36 months

$Z_{1} = \frac{x_{1} -mean}{S.D} = \frac{36-45}{8} = -1.125$

Let X₂ = 4 years = 12 × 4 = 48 months

$Z_{2} = \frac{x_{2} -mean}{S.D} = \frac{48-45}{8} = 0.375$

<u><em>Step(iii)</em></u>:-

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = P(-1.125≤Z≤0.375)

= P(Z≤0.375) - P(Z≤-1.125)

= 0.5 +A(0.375) - (0.5-A(1.125)

= 0.5 + 0.1480 - (0.5 -0.3708)

= 0.1480 + 0.3708

= 0.5188

<u><em>Final answer:-</em></u>

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = 0.5188

The percentage of that Delta car batteries last between three and four years

P(3≤X≤4) = 52%

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3 years ago

Find area and perimeter

alisha [4.7K]

Answer:

Perimeter

P = P1+P2

P1 = 4a P2=2(a+b)

P1=4*5 P2=2(3+5)

P1=20 P2=2*8

P2=16

P = 20+16

P=36

Area

A=A1+A2

A1= $a^{2}$ A2=a*b

A1= $5^{2}$ A2=3*5

A1=25 A2=15

A=25+15

A=40

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Zeno jumped 8 meters. Then he jumped half as far again (4 meters). Then he jumped half as far again (2 meters). So after 3 jumps

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3.5/2 = 1.75

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