Ireally need with this question. the question says ‘ the value of the solid’s surface are is equal to the value of the solid’s volume. find the value of x.’

Units of square inches are never equal to units of cubic inches, so we presume the statement of the problem applies to the numerical values in in² and in³.

The volume of a cuboid of length L, width W, and height H is

... V = LWH

The area is

... A = 2(LW + H(L+W))

You want these to be equal for L=9, W=4, and H=x.

Equating the expressions, we have

... 9·4·x = 2(9·4 +x(9+4))

... 36x = 2(36 +13x) . . . . . simplify a bit

... 36x = 72 + 26x . . . . . . simplify more

... 10x = 72 . . . . . . . . . . . . subtract 26x

... x = 7.2

The dimension represented by x is 7.2 inches.

the gift-box above, is pretty much just a rectangular prism, like the one in the picture below, check the picture below.

so as you can see, is really just 6 rectangles stacked up to each other at the edges.

to get the area of the gift-box, we simply get the area of all rectangles.

left and right, is just 2 rectangles of 4*x, or 2(4*x) = 8x.

front and back, is 2 rectangles of 9*x, or 2(9*x) = 18x.

top and bottom, is 2 rectangles of 9*4, or 2(9*4) = 72.

if we sum those up, that's the surface area, SA, of the gift-box, 8x + 18x + 72.

now its volume is simply the product of the height, length and width, namely 9*4*x, or 36x.

answer: the answer is 30 miles per hour.

ft/s -> mphmph = ft/s 1.466667mph = 44 divided by 1.466667mph = 30.00000

- r3ktforgood ☕

"it's not the heat, it's the humidity".   that's a partly valid phrase you may have heard in the summer, but it's actually both.   the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.   this has important considerations for the human body's comfort.   when the body gets too hot, it begins to perspire or sweat to cool itself off.   if the perspiration is not able to evaporate, the body cannot regulate its temperature.   evaporation is a cooling process.   when perspiration is evaporated off the body, it effectively reduces the body's temperature.   when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases.   in other words, the human body feels warmer in humid conditions.   the opposite is true when the relative humidity decreases because the rate of perspiration increases.   the body actually feels cooler in arid conditions.   there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation: