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Alex17521 [72]
3 years ago
7

7a = 28 Is a=21 a solution? yes or no

Mathematics
2 answers:
bagirrra123 [75]3 years ago
4 0
No, because 7 x 21 is 147.
vovangra [49]3 years ago
3 0

Answer:

No

Step-by-step explanation:

No because if a = 21, then 7 * 21 = 147 and 147 is not 28.

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Name two lines in the diagram.
Oksanka [162]

Answer:

Options (3) and (6)

Step-by-step explanation:

"A straight line is a set of all points between two points and extending beyond these points."

Therefore, from the given diagram,

Arrows connecting set of two points B and C and D and E will be straight lines.

Geometrically we denote them with an arrow over the line.

\overleftrightarrow {BC} and \overleftrightarrow {DE}

Therefore, Options (3) and (6) will be the answer.

6 0
3 years ago
If there were 49 cars in a line that stretched 528 feet, what is the average car length? assume that the cars are lined up bumpe
lakkis [162]

If there were 49 cars in a line that stretched 528 feet, what is the average car length? assume that the cars are lined up bumper-to-bumper

Answer: We are given there are 49 cars

Also these 49 cars are in a line stretched 528 feet.

Now the average length of the car is:

Average length = \frac{(length-covered-by-49-cars)}{Number-of-cars}

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Therefore, the average length of car is 10.78 feet

                 

6 0
3 years ago
As a bicycle salesperson, Norman earns a fixed salary of $20 per week plus $6 per bicycle for the first 6 bicycles he sells, $12
wlad13 [49]

Answer:

A. I only

I. y>2x

Step-by-step explanation:

I. y>2x

He sold x bicycles last week and y bicycles this week,  this week, he earned more than twice as much as he did last week. Therefore more than twice means greater than 2 x or

y>2x

II. y>x This is not true because y could be greater than x and less than twice of x (2x)

III. y>3 This is also not true because the least he would be earning would be $ 20 and he could get earn greater than 3 and less than $ 20 which would again be contradictory to the given statement

4 0
3 years ago
Please help asap!! Due today!
Gwar [14]

Answer:

No for the first

Step-by-step explanation:

Sorry i do not know the second one bt the first one is No it is not a right angle

5 0
3 years ago
How many solutions does the equation (20 - 12x) = 5 - 3x have?
Alborosie

Answer:

x=5/3

Step-by-step explanation:

there is only 1

3 0
2 years ago
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