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Ainat [17]
3 years ago
6

X ( y - x y ), where x= -5 and y= -2

Mathematics
2 answers:
adell [148]3 years ago
7 0

Answer:

60

Step-by-step explanation:

-5(-2-10)

according to pemdas...solve parenthesis first

-5(-12)

= 60

siniylev [52]3 years ago
4 0

Answer:

60

Step-by-step explanation:

x ( y - x y )

where x= -5 and y= -2

----------

-5(-2-(-5)(-2))=-5(-2-10)= -5(-12)= 60

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4 0
3 years ago
12 _ (7 - 4) +5 _ 3 = 19
anygoal [31]

The first blank is "division" and the second blank is "multiplying"

12 / (3) = 4

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7 0
3 years ago
The following function represents the value of a motorcycle, in dollars, after x years: f(x) = 19,000(0.91)x
Semenov [28]

Answer:

Option C.The decrease in the value of the motorcycle, which is 9%

Step-by-step explanation:

we have a exponential function of the form

f(x)= ab^x

where

a is the initial value

b represents growth or decay factor

If b >1 then it is an exponential growth

if 0<b<1 then it is an exponential decay

In this problem

a=$19,000

b=0.91 -----> it is exponential decay factor

Find the rate of decrease r

b=(1-r)

substitute

0.91=1-r

r=1-0.91=0.09

Convert to percentage

0.09*100=9%

therefore

0.91 represent the decrease in the value of the motorcycle, which is 9%

7 0
3 years ago
Read 2 more answers
the price of a gallon of unleaded gas was $2.86 yesterday. today, the price fell to $2.79. find the percent decrease. round answ
soldier1979 [14.2K]
So.. 2.86 - 2.79 is the amount in decrease or 0.07

so.. if we take 2.86 as the 100%, how much is 0.07 of that in percentage?

well \bf \begin{array}{ccllll}&#10;amount&\%\\&#10;\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\&#10;2.86&100\\&#10;0.07&x&#10;\end{array}\implies \cfrac{2.86}{0.07}=\cfrac{100}{x}

solve for "x"
3 0
2 years ago
What's the scientific notation of 0.000000109
Over [174]
0.000000109 in scientific notation will look as it follows:

1.09 * 10^-7

or
<span>
1.09 E-7

It's the same as 1.09 * (-10000000)

I hope it'll give you some clue of scientific notation with decimals.</span>
5 0
3 years ago
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