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Helga [31]
2 years ago
7

What is 2x + 5 (y-1) when x=8 and y=5

Mathematics
2 answers:
Neko [114]2 years ago
8 0

Step-by-step explanation:

2x + 5 (y-1)

16+20

=36

hope it helps you

OverLord2011 [107]2 years ago
5 0
36
just replace the variables and then subtract then multiply
You might be interested in
If you earn $1200 per month and you expect your earnings to increase by 10% per year, what monthly salary would you be making in
Sergio [31]
So u turn the percent into a decimal.
0.10 
Now multiply 1200 * 0.10
1200*0.10= 120 ( 120 is the amount that is gonna increase)
So if it says 5 years, than your gonna multiply 120 * 5 
120*5 =600
So your gonna add 600 to 1200.
So in five years your gonna be making 1,800.
An easier way would be to use prt
Principle * rate * time
1200 * 0.10* 5
= 600
So now you just add 600 to 1200
= 1800

7 0
3 years ago
What values for q (0 ≤q≤2π)<br> satisfy the equation?<br><br> 22√sin q + 2 = 0
Vesna [10]
Answer:
\frac{3 \pi }{4} , \frac{7 \pi }{4}

Explanation:
2√2 sin(q) + 2 = 0
2√2 sin(q) = -2
sin(q) = \frac{-2}{2 \sqrt{2} }
sin(q) = \frac{- \sqrt{2} }{2}

Now, we know that:
sin (45) = \frac{ \sqrt{2} }{2}

From the ASTC rule, we know that the sine function is negative in the third and fourth quadrant.
This means that:
either q = 90 + 45 = 135° which is equivalent to \frac{3 \pi }{4}
or q = 270 + 45 = 315° which is equivalent to \frac{7 \pi }{4}

Hope this helps :)
6 0
3 years ago
Read 2 more answers
The ratio of 3 km to 1800 m is​
Ugo [173]
5 : 3


D1 = 3km = 3000 m (1km = 1000m)
D2 = 1800m


Ratio of D1:D2
=3000/1800
=1000/600 (dividing by 3)
=10/6 (dividing by 100)
=5/3 (dividing by 2)

= 5 : 3
6 0
3 years ago
Tell which two decimal is between 6/7, to the hundredth place
Contact [7]
The decimal between it are 6.7
7 0
3 years ago
What is the ratio of quarters to nickels in a dollar
sleet_krkn [62]

For quarters we have:

0.25x = 1

Where,

x: number of quarters

Clearing x we have:

x = \frac{1}{0.25}\\x = 4


For nickels we have:

0.05y = 1

Where,

y: number of nickels

Clearing y we have:

y = \frac{1}{0.05}\\y = 20


Then, the ratio of quarters to nickels is:

\frac{x}{y}= \frac{4}{20}

Simplifying we have:

\frac{x}{y} = \frac{1}{5}


Answer:

The ratio of quarters to nickels in a dollar is:

\frac{x}{y}= \frac{1}{5}

5 0
3 years ago
Read 2 more answers
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