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4 years ago

Please help me with this page

Mathematics

1 answer:

goldenfox [79]4 years ago

8 0

A.the area of fabric is 4 15/20 times 2 8/20 then round or round first
b.find the exact answer

a.15/16 times 4/16 rounded
b.15/16 times 4/16 exact answer use calculator

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Equivalent Ratios

Black_prince [1.1K]

C because when you add 2 in one column you keep adding three to the other

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4 years ago

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Wastewater is filling barrels at the rate of 11 quarts per hour. The recycling facility picks up 120 full barrels on each trip,

givi [52]

120 barrels x 12 quarts per barrel = 1440 total quarts

1440 quarts / 11 quarts per hour = 130.91 hours to fill all the barrels

1 day = 24 hours

130.91 hours / 24 hours = 5.45 days = 5.5 days

5 0

3 years ago

50 points help asap!

Luden [163]

Answer:

58 feet.

Step-by-step explanation

Since the angle given is across from the length we need to find and we are given the hypotenuse, we use sine.

Sin(46)=x/80 where x is the height of the triangle and 80 is the hypotenuse.

80sin(46)=x

x=57.55 or 58 feet.

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3 years ago

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Tan Please help I’m on a time limit

Leto [7]

Answer:

8/15

Step-by-step explanation:

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3 years ago

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Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimeters,

tiny-mole [99]

Answer:

Probability that the sample mean would be greater than 141.4 millimetres is 0.3594.

Step-by-step explanation:

We are given that Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimetres, and a standard deviation of 7.

A random sample of 39 steel bolts is selected.

Let $\bar X$ = sample mean diameter

The z score probability distribution for sample mean is given by;

Z = $\frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} } } }$ ~ N(0,1)

where, $\mu$ = population mean diameter = 141 millimetres

$\sigma$ = standard deviation = 7 millimetres

n = sample of steel bolts = 39

Now, Percentage the sample mean would be greater than 141.4 millimetres is given by = P( $\bar X$ > 141.4 millimetres)

P( $\bar X$ > 141.4) = P( $\frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} } } }$ > $\frac{141.4-141}{\frac{7}{\sqrt{39} } } }$ ) = P(Z > 0.36) = 1 - P(Z $\leq$ 0.36)

= 1 - 0.6406 = 0.3594

The above probability is calculated by looking at the value of x = 0.36 in the z table which has an area of 0.6406.

8 0

4 years ago