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balu736 [363]
3 years ago
15

14 Pencils are sold for $3.84 per dozen. Find the cost of 15 pencils. SHOW HINT

Mathematics
1 answer:
masha68 [24]3 years ago
7 0

Answer:

the answer is ############

Step-by-step explanation:

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What is the surface area of the composite solid? a rectangular prism with a length of 2 meters, width of 8 meters, and height of
Anna007 [38]

Using the formula for the surface area of a rectangular prism, the surface area of the composite solid is: C. 162m²

<h3>What is the Surface Area of a Rectangular Prism?</h3>

Surface area of a rectangular prism = 2(wl+hl+hw)

Surface area of the composite shape = surface area of the larger prism + surface area of the smaller prism - area of the face both prisms are joined together

Surface area of the larger prism = 2(wl+hl+hw) = 2(2×3 + 9×3 + 9×2) = 102 m²

Surface area of the smaller prism = 2(wl+hl+hw) = 2(2×8 + 2×8 + 2×2) = 72 m²

Area of the face both prisms are joined together = 2(l×w) = 2(3 × 2) = 6 m²

Surface area of the composite shape = (102 + 72) - 12 = 162m²

Learn more about surface area of rectangular prism on:

brainly.com/question/1310421

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4 0
1 year ago
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What is 5 divided by 2549
blondinia [14]

Answer:

0.00196155355

7 0
2 years ago
Can you solve for b bh=r
Alenkasestr [34]

Answer: b = r/h

Step-by-step explanation:

To solve for b, simply divide both sides of the equation by h to get:

bh/h = r/h

b = r/h

Hope it helps :) and let me know if you want me to elaborate.

8 0
2 years ago
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The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 . A dotplot s
Ilya [14]

Answer:

The value of the test statistic and degrees of freedom is 2.148 and 11 respectively.

Step-by-step explanation:

Consider the provided information.

The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 .

Thus, n = 12, \bar x=36800 σ = 5000

degrees of freedom = n-1 = 12-1 = 11

H_0: \mu = 33700\ and\ H_a: \mu \neq 33700

Formula to find the value of z is: z=\frac{\bar x-\mu}{\frac{\sigma}{\sqrt{n}}}

Where \bar x is mean of sample, μ is the mean of population, σ is the standard deviation of population and n is number of observations.

z=\frac{36800-33700}{\frac{5000}{\sqrt{12}}}

z=2.148

Hence, the value of the test statistic and degrees of freedom is 2.148 and 11 respectively.

6 0
3 years ago
If 42 students were born in a state other than Texas, how many students does Mrs. Vy have in all her classes
Tanya [424]

Answer:

58

Step-by-step explanation:

7 0
2 years ago
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