All categories

3 years ago

Can someone please help this is due in 15 minutes.

Mathematics

1 answer:

son4ous [18]3 years ago

8 0

Answer:

It's 128 or 256 but I'm pretty sure it's 128

Step-by-step explanation:

To calculate actual area based on a scale drawing, take each of the original dimensions and multiply them by the scale factor to get the actual dimensions. Then, use your knowledge of geometric figures to calculate the enlarged or reduced area

You might be interested in

Given

kondaur [170]

Answer:

+ 10 and + 7

Step-by-step explanation:

Given

2x² + 7x + 5

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × 5 = + 10 and sum = + 7

4 0

3 years ago

The length of the hypotenuse of a right triangle is 14.5 meters. The length of one of the legs is 8.7 meters. What is the length

GenaCL600 [577]

Answer:

b=11.6m

Step-by-step explanation:

If this is a right triangle;

a^2+b^2=c^2

A and B are both LEGS, while C is the HYPOTENUSE

(8.7^2)+b^2=(14.5^2)

b^2=(14.5^2)-(8.7^2)

b^2=134.56

b=plus or minus 11.6

Because length can't be negative, it's +11.6

8 0

3 years ago

Read 2 more answers

Find volume of cone z=sqrt(x^2+y^2) that is bounded with z=5 and z=7

Nina [5.8K]

Convert to cylindrical coordinates first, using

$\begin{cases}x=r\cos\theta\\y=r\sin\theta\\z=\zeta\end{cases}$

Then the volume is

$\displaystyle\int_{\zeta=5}^{\zeta=7}\int_{\theta=0}^{\theta=2\pi}\int_{r=0}^{r=\zeta}r\,\mathrm dr\,\mathrm d\theta\,\mathrm d\zeta$
$=\displaystyle\pi\int_{\zeta=5}^{\zeta=7}\zeta^2\,\mathrm d\zeta$
$=\dfrac{218\pi}3$

5 0

3 years ago

Tina had $15.73 • She purchased 3 plastic bracelets for $1.88 each and 1 hair ribbon for $1.23 • There was no sales tax How much

Lady_Fox [76]

Answer:

B. $8.86

Step-by-step explanation:

$1.88 * 3 plastic bracelets = $5.64

$1.23 for one hair ribbon

$5.64 + $1.23 = $6.87

$15.73 - $6.87 = $8.86

3 0

3 years ago

Read 2 more answers

Find AD. Show how you got your answer.

stealth61 [152]

Notice the picture below
the AD line is a bisector, cutting the 36 degrees A in half,
18 and 18 degrees each half

notice the tickmarks, the triangle is an isosceles,
if those two sides are equal, so are the angles they make
down below with the base

now, the base is 8, AD is bisecting that too, to 4 and 4

now, using the Law of Sines

$\bf \textit{Law of sines}
\\ \quad \\
\cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c}\\\\
----------------------------\\\\
\cfrac{sin(18^o)}{4}=\cfrac{sin(72^o)}{\overline{AD}}\implies \overline{AD}=\cfrac{4\cdot sin(72^o)}{sin(18^o)}$

keep in mind, the angles are in degrees, so, when taking the sines, make sure your calculator is in Degree mode

4 0

3 years ago