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Naya [18.7K]
3 years ago
12

What is the answer to(1−5q)+2(2.5q+8)

Mathematics
1 answer:
never [62]3 years ago
5 0
Greetings!

Simplify the Expression.
=(1-5q)+2(2.5q+8)

Distribute the Parenthesis. 
<em>How?</em><span> Multiply the terms inside the Parenthesis by the term outside of the Parenthesis.
</span>=1*1-1*5q+2*2.5q+2*8

Combine Like Terms.
=1-5q+5q+16

=17

The Answer Is:
\left[\begin{array}{ccc}17\end{array}\right]

Hope this helps.
-Benjamin

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Can someone help me with number 4,5 and 6?
True [87]
4) You know slope-intercept form is y=mx+b. So using these two given points, you can find the slope! 

(-8,5)  (-3,10) [Use the y1-y2 over x1-x2 formula to solve for slope]

10 - 5         5
---------   = ----- = 1 
-3-(-8)         5

Hurray! You got a slope of one. Now substitute this back into your original equation:
y=mx+b --> y=1x+b 

Next, we find what our "b" is, or what our y-intercept is:
Using one of the previous points given, substitute them into the new equation:
[I used the point (-3, 10) ]

y=1x+b
10=1(-3)+b  SUBSTITUTE 
10=-3+b     MULTIPLY
10=-3+b
+3   +3    ADD
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13=b     SIMPLIFY 

So, now we have our y-intercept. Use this and plug it into the equation:
y=1x+b --> y=1x+13 

y=1x+13 is our final answer.



5) So for perpendicular lines, your slope will be the opposite reciprocal of the original slope. (Ex: Slope is 2, but perpendicular slope is -1/2) 

We have the equation y= 3x-1, so find the reciprocal slope! 
--> y=-1/3x-1 

Good! Now we take our given point, (9, -4) and plug it into the new equation:

y=-1/3x-1
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+3   +3            ADD
--------
-1=b    SIMPLIFY 

So, our final answer is y=-1/3x+(-1)

6) I don't know, sorry! :( 
4 0
3 years ago
On a piece of paper, use a protractor to construct a triangle with angle measures of 50° and 70º.
Firlakuza [10]
Hello my Kings and Queens the answer would be 60 degrees because all angles of a triangle always add up to 180 degrees
7 0
3 years ago
Read 2 more answers
If a radioactive isotope has a half-life of 6 hours and 12 milligrams is initially present, how much will
Serhud [2]

Answer:0.75 milligrams will  be present in 24 hours

Step-by-step explanation:

Step 1

The formula for radioactive decay can be written as

N(t)=No (1/2)^(t/t 1/2)

where

No= The amount of the radioactive substance at time=0=milligrams

t 1/2= the half-life= 6 hours

t=24 hours

N(t) = the amount at time t

Step 2--- Solving

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=N(t)=12 x ( 1/2) ^ (24/6)

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3 0
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Ipatiy [6.2K]
The correct question is
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let
x-------> total <span>weight of candies
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the answer is
6 lb
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3 years ago
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