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Anton [14]
3 years ago
13

Need help with all three questions...

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
4 0
7) 2-9= -7 because, if you have two cookies and promised nine friends cookies, you would still owe 7 friends cookies or -7
8) -3 - (-4)= 1 because you owe 3 friends cookies, then you get 4 cookies and have one left over
9) 11 - (-12)= 23 because a negative plus a negative is a positive
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What is the coefficient of q in the sum of these two expressions? (23q – 34) and (–16q – r) NEED HELPPP
jeyben [28]

Answer:

The coefficient of q is 7

Step-by-step explanation:

The two expressions are

23q-34 and -16q-r.


The sum of the two expressions is


23q-34+-16q-r


When we group like terms the expression will be,


=23q-16q-r-34


When we  simplify the expression will now be


=7q-r-34

The coefficient of q is the constant behind q in the expression.

The coefficient of q is  therefore 7.



5 0
3 years ago
Two stars are 7.644 x 1014 miles apart. Express this
vagabundo [1.1K]

Answer:

Multiply 1014 by 6.444 and you should get

Step-by-step explanation:

6534. 216 x

8 0
3 years ago
Graph the line with slope -1/2 passing through the point (5,4)
slava [35]

Answer:

put a down a point at (5,4) and go down 1 right 2, then plot another point.

You also can go from (5,4) up 1, left 2 and plot a point.

6 0
3 years ago
Find the exact value of sec theta if csc theta = -4/3 and the terminal side of theta lies in quadrant III
GREYUIT [131]

Answer:

-4 sqrt(7)/7

Step-by-step explanation:

csc theta = -4/3

csc theta = hypotenuse / opposite side

hypotenuse = 4  

opposite  = 3

Using the pythagorean theorem

a^2 + b^2 = c^2

3^2 + b^2 = 4^2

9+b^2 = 16

b^2 = 16-9

b^2 = 7

Taking the square root

sqrt(b^2) = sqrt(7)

b = sqrt(7)

We are in the third quadrant so only tan  and cot are positive

that means the x and y values are "negative"  so a = -3 and b = - sqrt(7)

sec theta = hypotenuse / adjacent

                = 4/ - sqrt(7)

rationalizing  

                   -4 sqrt(7)/ sqrt(7)* sqrt(7)

                = -4 sqrt(7)/7

           

3 0
3 years ago
Cameron earns $7 per hour. How much does he earn in 5 hours
ANEK [815]
All you have to do is multiply both
5 0
4 years ago
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