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Lemur [1.5K]
2 years ago
15

How can you find unknown lengths or widths in an easy way? 30 points!

Mathematics
1 answer:
Nadusha1986 [10]2 years ago
7 0
Since you are in middle school, I will assume simple shapes such as rectangles and squares

area=legnth times width
therefor
width=area/legnth and
legnth=area/width
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Find the value of 423 using the identity (x + y)3 = x3 + 3x2y + 3xy2 + y3
finlep [7]
Hint: 423 = (40 + 2)3; therefore, x = 40 and y = 2.
8 0
3 years ago
Angle 1 and Angle 2 are complimentary angles. Find x and the measure of Angle 1.
Bad White [126]

Answer:

x=12 pls give brainliest

Step-by-step explanation:

5 0
3 years ago
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A: Half of a 16 inch pizza or pizza B: A whole 10 inch pizza to himself. Which pizza would ensure him the largest amount?
harkovskaia [24]

Answer:

Choice B, 10 inch pizza to himself

Step-by-step explanation:

1. Half of 16 inch pizza= 8 inch

2. 10 inch pizza to himself= well, 10 inch

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7 0
2 years ago
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A random sample of 12 recent college graduates reported an average starting salary of $54,000 with a standard deviation of $6,00
Marianna [84]

Answer: a.) $50188 to $57812

Step-by-step explanation: <u>Confidence</u> <u>Interval</u> (CI) is an interval of values in which we are confident the true mean is in.

The interval is calculated as

x ± z\frac{s}{\sqrt{n} }

a. For a 95% CI, z-value is 1.96.

Solving:

54,000 ± 1.96.\frac{6000}{\sqrt{12} }

54,000 ± 1.96\frac{6000}{3.464}

54,000 ± 1.96*1732.102

54,000 ± 3395

This means the interval is

50605 < μ < 57395

<u>With a 95% confidence interval, the mean starting salary of college graduates is between 50605 and 57395 or </u><u>from 50188 to 57812$.</u>

<u />

b. The mean starting salary for college students in 2017 is $50,516, which is in the confidence interval. Therefore, since we 95% sure the real mean is between 50188 and 57812, there was no significant change since 2017.

4 0
2 years ago
A recipe needs 3/4 cup of water for every 2 cups of flour. If you to use 6 cups of flour, how much water will you need?
Diano4ka-milaya [45]

Answer:

2 1/4 or 2.25

Step-by-step explanation:

2*3= 6

3/4*3= 2 1/4

4 0
2 years ago
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