Answer:
Only the firsts and fourth choices ( and )
Step-by-step explanation:
Turn the equation into words:
"A number plus 9"
"Multiplied by "
"Is equals to -18"
Distribute to find the second equation:
Let,
digital cameras be "x"
video cameras be "y"
Now,
According to the question,
5x + 3y = $3,213..................................................equation (1)
y = 4x..................................................................equation (2)
Taking equation (1)
5x + 3y = $3,213
Substituting the value of "y" from equation (2), we get,
5x + 3(4x) = $3,213
5x + 12x = $3,213
17x = $3,213
x = $3,213 / 17
x = $189
Taking equation (2)
y = 4x
Substituting the value of "x", we get,
y = 4 ($189)
y = $756
Now,
John buys a digital and a video camera. So, it costs him ($189 + $756) = $945
Answer:
b=16
Step-by-step explanation:
Formula~ 1/2*b*h
1/2*15*b=120
7.5b=120
b=120/7.5
b=16
(you can substitute the value to check-i've done it below)
1/2*16*15=?
if you work it out, the ans will be 120, therefore the ans is correct!
Answer:
The rate of evaporation in gallons per year will be gallons per year.
Step-by-step explanation:
The amount of annual evaporation from the Hoovers dam is approximately acre-feet.
Now, 1 acre-foot of water is equivalent to 326000 gallons of water.
So, the total volume of water that evaporates per year from the dam will be
.
Therefore, the rate of evaporation in gallons per year will be gallons per year. (Answer)
<span>For a function to have an inverse function, it must be one-to-one, that is, it must pass the
Horizontal Line Test that establishes that a function has an inverse function if and only if no horizontal line intersects the graph of
at more than one point. The function asin(x) does not pass the test because different values of
yield the same
However, if you <em>restrict</em> the domain to the interval:
</span>
<span>
as shown in Figure 1, then you have the inverse of the sine function.
So in Figure 2 is shown the graph of:
.
Note that this graph is the same as:
but it is shifted 15 units upward</span>