3 years ago

What is the answer to this plz

Mathematics

1 answer:

frosja888 [35]3 years ago

3 0

Answer:

Step-by-step explanation:

Surface area = 2(12 × 8) + 2(12 × 3) + 2(3 × 8) = 312 in²

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Given m jml=80 and m kml=33 what is m jmk

brilliants [131]

Answer:

Step-by-step explanation:

Given the angle <JML = 80°, <KML = 33°, we are to find the angle <JMK, using the expression;

<JML = <KML+<JMK

Substituting the given values into the expression to get <JMK we will have;

80° = 33°+<JMK

Subtract 33° from both sides

80° -33°= 33°+<JMK - 33°

47° = <JMK

<em>Hence the value of the angle <JMK is 47°</em>

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3 years ago

an online store is having a special on music. An MP3 player cost $70 and Sons Coast $0.85 each. Write an expression that represe

Kruka [31]

(.08X.10)+(7X10)+(2X10)+(0.5X1)

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3 years ago

What is <br> the ratio equal for 90:18

Ann [662]

To find the ratio between 2 numbers, you need to find the GCF of those 2 numbers. If the GCF is the ratio, the ratio is in it's simplest form.
GCF of 90 and 18 is 18
divide both numbers by the GCF and the final simplest ratio is 5:1

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4 years ago

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An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an est

Nookie1986 [14]

Answer:

confidence interval = (27.9, 28.3)

Step-by-step explanation:

Here we are given the population std deviation value as 5.7. So we can use Z critical value for finding out confidence interval.

Sample size n = 4386

Std error of sample mean = $\frac{5.7}{\sqrt{4386} } \\=0.0861$

Sample mean = 28.1

Z critical value two tailed for 98% = 2.326

margin of error = ±2.326*0.0861 =0.2003

confidence interval lower bound

= $28.1-0.2003=27.8997$

Upper bound

= $28.1+0.2003\\=28.3003$

After rounding off we get

confidence interval = (27.9, 28.3)

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3 years ago

Four expressions are shown below:

marusya05 [52]

It’s the first one and the third one

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3 years ago

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