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sweet-ann [11.9K]
3 years ago
11

Perform the following calculations: (-16) - (-42)

Mathematics
2 answers:
leva [86]3 years ago
6 0

Answer:

26

Step-by-step explanation:

When we subtract a negative it is like adding

(-16) - (-42)

(-16) + (42)

Re arranging the order

42 -16

26

masha68 [24]3 years ago
3 0

Answer:

Step-by-step explanation:

The - 42 is going to give trouble.

Two minus signs multiplied together give a plus. In fact any number of even minus signs (2,4,6,8, 1000) multiplied together make a plus.

(-16) + 42 = 26

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Hello I need help on it ​
Readme [11.4K]

Answer:

i think that it would be A.3 is 0.03 times 3 or C.3 is 0.03 times 100

Step-by-step explanation:

8 0
3 years ago
A restaurant has fixed costs of $147.50 per day and an average unit cost of $5.75 for each meal served. If a typical meal costs
Nikolay [14]

Answer:

The answer is 118.

Step-by-step explanation:

First we need to subtract the meal cost from average unit cost for each meal:

7-5.75=1.25

A restaurant profits 1.25$ for each meal. If we divide fixed cost to profit for each meal:

147.5/1.25=118

The restaurant have to sell 118 meals at least each day for the owner to break even

5 0
3 years ago
I don't understand what I'm supposed to do here. I have a test on this tomorrow so if you explain how to do it that would be gre
VladimirAG [237]
Here is a little tip for this: The unit above cancels the unit below. So in this problem you are asked to convert pounds to ounce. So your equation will look like this. 

ounce = 2.93 pounds ( \frac{16 ounces}{1 pounds} ) = 46.88
Your ratio should involve the conversion factor. So 16 and 1 is involved canceling A and D. Then, Notice that you started with poubls. Then the ratio must have pounds at the bottom to cancel the units leaving ounces. 
7 0
3 years ago
Help! What is the average rate of change of f(x)=x^2+3x+6 over the interval -3 less-than-or-equal-to x less-than-or-equal-to 3?
Makovka662 [10]

Answer:

The average rate of change of the function over the interval is 5.

Step-by-step explanation:

Average rate of change of a function:

The average rate of change of a function f(x) over an interval [a,b] is given by:

A = \frac{f(b)-f(a)}{b-a}

Interval -3 less-than-or-equal-to x less-than-or-equal-to 3

This means that a = -3, b = 3

f(x) = x^2 + 3x + 6

So

f(b) = f(3) = (3)^2 + 3(3) + 6 = 9 + 9 + 6 = 24

f(a) = f(-3) = (-3)^2 + 3(-3) + 6 = 9 - 9 + 6 = 6

Average rate of change

A = \frac{f(b)-f(a)}{b-a} = \frac{24+6}{3-(-3)} = \frac{30}{6} = 5

The average rate of change of the function over the interval is 5.

8 0
3 years ago
X^2-6x=6<br> solve by completing the square
Ivanshal [37]
Hi!

The answer is x=3± \sqrt{15}
7 0
3 years ago
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