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qwelly [4]
3 years ago
7

HURRY PLEASEEE Evaluate the expression when y = 4 Y/2-8=

Mathematics
1 answer:
dmitriy555 [2]3 years ago
5 0
- 1 1/2 (Negative one and one half
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0.9? I AM NOT REALLY SURE ANOUT IT

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3 years ago
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Briana spent 2 3/4 hours on her science project. Jackson worked 1 1/3 times as long on his science project as Briana worked. For
nikdorinn [45]
3 2/3 hours. Because if you do 2 3/4 times 1 1/3 you get 11/3 which simplifies into a mixed fraction of 3 2/3.
8 0
3 years ago
a pyramid has a regular hexagonal base with side length of 4 and a slant height of 6. what is the total area of the pyramid
Stels [109]
So hmm notice the picture below

the pyramid itself, is really, just one regular hexagon, at the bottom
and 6 triangles, stacked up at each other at the edges

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\bf \textit{area of a regular polygon}\\\\
A=\cfrac{1}{4}\cdot  n\cdot  s^2\cdot  cot\left( \frac{180}{n} \right)\qquad 
\begin{cases}
n=\textit{number of sides}\\
s=\textit{length of a side}\\
\frac{180}{n}=\textit{angle in degrees}\\
----------\\
n=6\\
s=4
\end{cases}\\\\\\ A=\cfrac{1}{4}\cdot  6\cdot  4^2\cdot  cot\left( \frac{180}{6} \right)

now, for the triangles, well, area of a triangle is 1/2 bh, as you'd know, and you have both

8 0
3 years ago
Which expression is equivalent to square root a^7
FinnZ [79.3K]

Answer is d

Step-by-step explanation:

If you multiply a^6 and a it equals a^7

3 0
3 years ago
Find the value of x (really need help with this)
qwelly [4]

Answer:

x=-7

Step-by-step explanation:

The sum of the angles of a triangle are 180 degrees

40 + x+57 + 90 =180

Combine like terms

187 +x = 180

Subtract 187 from each side

187-187 +x = 180-187

x = -7

4 0
3 years ago
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