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3 years ago

HELP ASAP DUE LAST WEEK (EASY MATH)

Mathematics

2 answers:

sveticcg [70]3 years ago

4 0

Answer:

136sq feet

Step-by-step explanation:

Two of its surfaces are 35ft in surface area, the bottom is 42ft in surface area and the front and back are both 12ft in surface area.

erma4kov [3.2K]3 years ago

3 0

Answer:

SURFACE AREA OF TRIANGULAR PRISM IS---

area of two triangles:

h = 4, b = 6

A = 1/2(b)(h) = 1/2(6)(4) = 12 sq. ft (area of one triangle)

two triangles, so 12 sq. ft + 12 sq. ft = 24 sq. ft

area of two equal rectangles:

l = 7, w = 5

A = (l)(w) = (7)(5) = 35 sq. ft (area of one rectangle)

two rectangles, so 35 sq. ft + 35 sq. ft = 70 sq. ft

area of one (bottom) rectangle:

l = 7, w = 6

A = (l)(w) = (7)(6) = 42 sq. ft

24 + 70 + 42 = 136 sq. ft

<h2>Answer: 136 sq. ft</h2>

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Ostrovityanka [42]

Answer:

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Step-by-step explanation:

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3 years ago

A 10-pound block of ice melts at a rate of 3% per hour. Find the weight of the block of ice after 1 day.

mylen [45]

Answer:

The weight of the block of ice after 1 day is of 4.81 pounds.

Step-by-step explanation:

Equation for exponential decay:

The equation that models an amount after t hours, subject to exponential decay, is given by:

$A(t) = A(0)(1 - r)^t$

In which A(0) is the initial amount and r is the decay rate, as a decimal.

A 10-pound block of ice melts at a rate of 3% per hour.

This means that $A(0) = 10, r = 0.03$

$A(t) = A(0)(1 - r)^t$

$A(t) = 10(1 - 0.03)^t$

$A(t) = 10(0.97)^t$

Find the weight of the block of ice after 1 day.

One day has 24 hours, so this is A(24).

$A(24) = 10(0.97)^{24} = 4.81$

The weight of the block of ice after 1 day is of 4.81 pounds.

6 0

3 years ago

PLEASE HELP 80 –30 23 30

lara31 [8.8K]

Step-by-step explanation:

6m+15n-12p/n where m=-3.5, n=4 and p=3

6(-3.5)+15(4)-12(3)/4=-21+60-36/4

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3 years ago

X and y are supplementary angles. y measures 142. What is the measure of x?

Nimfa-mama [501]

Answer:

38°

Step-by-step explanation:

y = 142°

x + y = 180°{ being supplementary angles }

x + 142° = 180°

x = 180° - 142°

x = 38°

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3 years ago

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BigorU [14]

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y = 8x/-4

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3 years ago