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Sidana [21]
3 years ago
7

Which expression is equivalent to 20+8y-9y-21

Mathematics
1 answer:
kompoz [17]3 years ago
7 0
Combine the like terms, which would give you -y-1
You might be interested in
An oil drilling company drills the same distance each day for 5 days. They started at an elevation of 121.175 feet and ended at
nirvana33 [79]

Answer:

x=\dfrac{|-246.875-121.175|}{5}

Step-by-step explanation:

Given that:

Same distance is drilled by the oil drilling company for 5 days.

Initial elevation = 121.175 feet

Final elevation = -246.875 feet

To find:

The equation to find the value of x i.e. the distance drilled each day?

Solution:

To find the distance drilled each day, we need to divide the total distance drilled with the number of days taken to drill the total distance.

Total distance drilled can be found by subtracting the initial elevation from the final elevation and taking modulus because distance can not be negative.

Total distance drilled = | Final elevation - Initial elevation |

Total distance drilled = | -246.875 - 121.175 |

Therefore, we can write the expression as:

x=\dfrac{|-246.875-121.175|}{5}

\Rightarrow x=\dfrac{|-368.05 |}{5} =73.61\ ft/day

3 0
3 years ago
Which number when you divide by 5, is the same when you minus 5?
Mazyrski [523]
X/5=x-5
x = 5x-25
4x = 25
x=25/4
6 0
4 years ago
Dr. Washington is interested in studying the relationship between test scores, coded from zero percent to 100 percent, and the n
aleksklad [387]

Answer:

independent quantitative.

Step-by-step explanation:

An indepentent variable in an investigation, is the variable that will be changed in order to know how its variation affects the dependent variable.

In this case, the dependent variable is the test scores since Dr Washington will study there is the numeber of hours of study affects the grade the students obtain.

Therefore, the hours of study are the independent variable.

It is also a quantitative variable since it can be counted.

6 0
3 years ago
How to solve and the answer
algol13

A reciprocal just flips the fraction

1. \frac{4}{3}

2.\frac{11}{1}

3. Before it is flipped it is \frac{9}{1} but it turns into \frac{1}{9}


Hope this helps!

6 0
3 years ago
If f(x)=7(x-1)+8f(x)=7(x−1)+8 , what is the value of f(1)f(1) ?
AVprozaik [17]

Answer:

f(11) = 78

Step-by-step explanation:

f(x) = 7(x-1) + 8

f(11)

 

x = 11

f(11) = 7(11-1) + 8

=7(10) + 8

= 70 + 8

= 78

5 0
3 years ago
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