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romanna [79]
3 years ago
12

Find the surface area of this right rectangular prism. Dimensions are in inches. 3, 2, and 4

Mathematics
1 answer:
vampirchik [111]3 years ago
3 0

Answer:

The area of the rectangular prism is 52 sq. inches

Step-by-step explanation:

Here, the dimensions of the prism are 3 inch, 2 inch and 4 inch

So, length = 4 inch

Breadth = 3 inch

and height = 2 inch

Now, TOTAL SURFACE AREA OF A CUBOID = 2 (LB+ BH+ HL)

=  2 ((4 x 3) + (3 x 2)  + (2 x 4))

= 2 (12 + 6 + 8) = 2 x 26 = 52 sq. inches

Hence, the area of the rectangular prism is 52 sq. inches

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an element with a mass of 540 grams decays by 17.9% per minute to the nearest tenth of a minute how long will it be until there
STatiana [176]

Answer:

It'll take approximately 9.1 minutes

Step-by-step explanation:

The decay of this element can be modeled by the following expression:

m(t) = 540*(1 - 0.179)^t

Where m is the mass of the element in a given minute t. This expression comes from a compounded interest formula, with negative rate, since they will work in the same manner. Therefore to find how long until it reaches 90 g, we need to make m = 90 and solve for t.

90 = 540*(0.821)^t

(0.821)^t = 90 / 540

(0.821)^t = 1/6

ln(0.821^t) = ln(1/6)

t*ln(0.821) = ln(1) - ln(6)

t*ln(0.821) = - ln(6)

t = -ln(6)/ln(0.821) = 9.08452

It'll take approximately 9.1 minutes

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3 years ago
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Hi! Can someone help me please.
Sati [7]

Answer:

27 inches

Step-by-step explanation:

We are using the Pythagorean theorem

a^2 +b^2 = c^2  where c is the hypotenuse

We are given the diagonal, which is the hypotenuse and a leg

36^2 + b^2 = 45^2

Subtract 36^2 from each side

36^2 + b^2 - 36^2 = 45^2 - 36^2

b^2 = 45^2 - 36^2

     b^2 =2025-1296

          b^2 =729

Take the square root of each side

sqrt(b^2) = sqrt(729)

b =27

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3 years ago
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Please answer in middle school manner
Amiraneli [1.4K]

Answer:

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You invest $5,175.00 in a stock plan. It increases 9% the first year and then losses 5% of its value the second year. What is yo
marysya [2.9K]

Answer:  $183.71

<u>Step-by-step explanation:</u>

Original amount is $5,175.00

1st year: Increase of 9%

→  $5175(1 + 0.09)

=   $5175(1.09)

=  $5640.75

                                       2nd year: Decrease of 5%  

                                       → $5640.75(1 - 0.05)

                                       =  $5640.75(0.95)

                                       = $5358.71

                                                                              Gain: 2nd year - Original  

                                                                               → $5358.71 - $5175.00

                                                                               = $183.71

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Solve for V . 7v-20=-6(v-1) Simplify your answer as much as possible.
Harman [31]
V=2 if you need a more in depth explanation let me know
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