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Brilliant_brown [7]

3 years ago

11

on a scale drawing,a book shelf is 8 inches tall the scale factor is 1/8. what is the height of the bookshelf

1 answer:

GenaCL600 [577]3 years ago

3 0

The scale actual; size would have to be 64in. 8in in size. Scale size is 1/8 . Multiple by 8*8 64 :)

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How do you solve-<br> 2-5/4x=13

Lapatulllka [165]

Step-by-step explanation:

2-5/4x=13

(8x-5)/4x=13
8x-5=52x
-5=52x-8x
-5=44x
x=-5/44

5 0

3 years ago

Can someone please help me with these two?? (With a clear answer please)

suter [353]

Try this solution:
rule: the volume of any cylinder can be calculated with formula: V=πr²h, where r - the radius of the base, h - height of the cylinder.
Using the formula written above:
5. V=π*25*6=150*3.1415≈471.2389≈471.2 cm³;
6. V=π*64*4=256*3.1415≈804.2477≈804.3 cm³

4 0

3 years ago

Ying is a professional deep water free diver. His altitude (in meters relative to sea level), xxx seconds after diving, is model

Wewaii [24]

Answer:

60 seconds

Step-by-step explanation:

$D(x) = \dfrac{1}{36}(x-60)^2-100$

When Ying reaches his lowest altitude, his velocity is 0.

The velocity, v(x) is the tiome-derivative of D(x).

$v(x) = \dfrac{d}{dx}D(x)$

$v(x) = \dfrac{2}{36}(x-60)\times1 = \dfrac{x-60}{18}$ (This was done by using chain rule)

Equating v(x) to 0,

$\dfrac{x-60}{18} = 0$

$x - 60 = 0$

$x = 60$

5 0

3 years ago

URGENT - Use 1.7 as the value of 3. What is the area of equilateral triangle ABC? sq mi

Alexxandr [17]

Hope this helps Use 1.7 as the value<span> of </span>square<span> root of </span>3<span> what is the are od </span>equilateral<span> of </span>triangle abc<span>? The base is 12 </span>miles<span> </span>

6 0

3 years ago

Find the slope of the line that passes through (4,2) and (9,1)?

pshichka [43]

Answer:

The slope of the line is $\displaystyle -\frac{1}{5}$ .

Step-by-step explanation:

We are given two coordinate points:

$(4, 2)$
$(9, 1)$

We are asked to find the slope of the line.

We can use the rise-over-run formula to solve for the slope of the line.

$\displaystyle \text{slope} = \frac{\text{rise}}{\text{run}}\\\\\text{slope} = \frac{y_2-y_1}{x_2-x_1}$

However, we firstly need to name our coordinate points.

In math, we can label our coordinates using the following label system:

$(x_1, y_1), (x_2, y_2)$

Therefore, we can also label our coordinates as such:

$x_1 = 4$
$y_1 = 2$
$x_2 = 9$
$y_2 = 1$

Now, we can supply these values into the formula and solve for our slope, or a better known variable, <em>m</em>.

$\displaystyle m = \frac{1 - 2}{9 - 4}\\\\m = \frac{-1}{5}\\\\m = -\frac{1}{5}$

Therefore, our slope is $\displaystyle -\frac{1}{5}$ .

8 0

3 years ago

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