3 years ago

Simplify 4d^2-3d+6

1 answer:

german3 years ago

8 0

3d3+4d2+2d−3 and −2w2+10w−7 and 4z3−6z2

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A cell phone tower casts a shadow 150 feet long. A tree nearby that is 30 feet tall casts a shadow that is 20 feet long. How tal

Aliun [14]

Answer:

225 feet

Step-by-step explanation:

x - 150

30 - 20

(150 * 30)/20 = 225

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3 years ago

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6/16= d/12 what makes d a true proportion

miv72 [106K]

D/12=6/16 multiply both sides by 12

d=72/16

d=9/2

d=4.5

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3 years ago

Need the answers please help

Aleonysh [2.5K]

Answer:

$\frac{1}{2}x+\frac{6}{5}=\frac{3}{10}x+\frac{3}{20}$

$x=-5\frac{1}{4}$

$7x-3+10=2x-8+8x$

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3 years ago

A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime) at a certain intersection

Roman55 [17]

Answer: -1.78

Step-by-step explanation:

As per given description, we have

Population proportion : $p=0.35$

Sample size : n= 500

Sample proportion : $\hat{p}=\dfrac{156}{500}=0.312$

Test statistic for population proportion :-

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\=\dfrac{0.312-0.35}{\sqrt{\dfrac{0.35(1-0.35)}{500}}}\\\\=-1.78146747757\ \ \text{(Simplified)}\\\\\approx-1.78$

Hence, the test statistic for this hypothesis test for a proportion= -1.78

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3 years ago

Write 5/6 in the lowest terms

Vanyuwa [196]

5 don't have lowest term only the 6 and it's 2 but if a number like 5 doesn't change so 6 doesn't change if not then divide 5 to 6.

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3 years ago

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