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weeeeeb [17]
3 years ago
6

What is the answer for -3(-5) - 16?

Mathematics
1 answer:
harina [27]3 years ago
4 0

Answer:

-1

Step-by-step explanation:

-3x(-5)-16

15-16

-1

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The temperature of a city changed -24 degrees Celsius over a 6 week period. Write an expression the show the average change in t
Ne4ueva [31]

Answer:

The expression is (-24) / 6 = -4degrees which means that in each week the average change in temperature was -4 degrees Celsius.

Step-by-step explanation:

Change in a quantities can as well be interpreted as rate of change which is used in many everyday problems, such as weather forecast, traveling , in science and so on.When we are talking about rate of change it's is usually in ratio such as Miles per hour or feet per second can be used in calculation involving rates of speed. It is how one quality is changing with respect to time , for instance, rate equals distance divided by time: r = d/t.

In finance rate of change is also applicable we can have Unit price which is a particular rate that compares a price to some unit of measure. Example is $64 per dozen.

Therefore, Given from the question,

The temperature of a city changed -24 degrees Celsius ,

Time =6 weeks period.

Then change is r = d/t.

= (-24) / 6

Change = (-24) / 6 = -4 degrees

This means that each week the average change in temperature was -4 degrees Celsius.

3 0
3 years ago
2x+5y=4<br> 2x-2y=18<br> using the method of elimination
ExtremeBDS [4]

Answer:

Equation Form:

x=7,y=−2

Step-by-step explanation:

Multiply each equation by the value that makes the coefficients of x

opposite.

(−1)⋅(2x+5y)=(−1)(4)

2x−2y=18

Simplify.

−2x−5y=−4

2x−2y=18

Add the two equations together to eliminate x

from the system.

(−2x−5y=−4) +(2x−2y=18) = (-7y=14)

Divide each term by −7 and simplify.

y=−2

Substitute the value found for y into one of the original equations, then solve for x.

x=7

The solution to the independent system of equations can be represented as a point. (7,−2)

The result can be shown in multiple forms.

Point Form:

(7,−2)

Equation Form:

x=7,y=−2

8 0
3 years ago
May you please help me with this
steposvetlana [31]

Answer:

ratio of a is 44:56, ratio of b is 97:3

fraction of a is 44/100, fraction of b is 97/100

decimal of a is 0.44, decimal of b is 0.97

percent of a is 97%, and percent of b is 97%

if this is wrong im so sorry :()()()()(

step-by-step explanation:

7 0
3 years ago
Sarah went to a local pharmacy to pick up medicine for her sick mother. She bought two things. Each item costed 40 dollars. How
inn [45]

Answer:

$80

Step-by-step explanation:

40+40=80

8 0
3 years ago
Name the numerator and the denominator in each fraction.
inysia [295]

the numerators are the top number and the numbers are: 11, 7, 12, and 0

the denominator is the bottom and the numbers are: 12, 512, 10, and 78

hope this helps!

3 0
3 years ago
Read 2 more answers
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