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Tanya [424]
2 years ago
10

Please anyone I need to do this know I have no time left

Mathematics
1 answer:
ira [324]2 years ago
4 0

Answer:

<h3>(1) 292 sq ft</h3><h3>(2) 346 sq in</h3>

Step-by-step explanation:

<u>Surface Area</u>

(1)

Triangular Prism

Given that:

  • Base (b) = 7 ft
  • Height (h) = 6 ft
  • Hypotenuse (y) = 9 ft
  • Depth (d) = 10 ft

Find the surface area!

Surface area =

bh + d(b+2y) =

(7 × 6) + (10×(7+(2×9))) =

42 + 250 =

<h3>292 sq ft ✅</h3>

___________________

(2)

Cuboid

Given that:

  • Length (L) = 11"
  • Width (W) = 10"
  • Height (H) = 3"

Find the surface area!

Surface area =

2LW + 2LH + 2WH =

(2×(11×10)) + (2×(11×3)) + (2×(10×3)) =

220 + 66 + 60 =

<h3>346 sq in ✅</h3>

______________

#IndonesianPride

- kexcvi -

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5 0
3 years ago
4. Tikili wants to invest $3500 at her local bank. She will receive an interest rate of 5% compounded
alexandr402 [8]

Answer:

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Step-by-step explanation:

The formula for this equation is

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3 0
3 years ago
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Elanso [62]
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7 0
3 years ago
The diameters of ball bearings are distributed normally. The mean diameter is 83 millimeters and the standard deviation is 3 mil
Alenkinab [10]

Answer:

0.2514 = 25.14% probability that the diameter of a selected bearing is greater than 85 millimeters.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 83, \sigma = 3

Find the probability that the diameter of a selected bearing is greater than 85 millimeters.

This is 1 subtracted by the pvalue of Z when X = 85. Then

Z = \frac{X - \mu}{\sigma}

Z = \frac{85 - 83}{3}

Z = 0.67

Z = 0.67 has a pvalue of 0.7486.

1 - 0.7486 = 0.2514

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7 0
3 years ago
Is this one question correct
bazaltina [42]

Answer: 2/3ft or C

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A = 2/5

h = 6/5

b = ?

Next, we can plug the numbers into this equation: \frac{2/5(2)}{6/5}=b

Multiply 2 and 2/5: 4/5 / 6/5

Take the reciprocal of 6/5: 4/5 x 5/6 = \frac{20}{30}

\frac{20}{30} ÷ \frac{10}{10} = \frac{2}{3}

7 0
3 years ago
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