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zhuklara [117]
3 years ago
10

NEED HELP ASAP Scale factor: 21

Mathematics
1 answer:
AveGali [126]3 years ago
7 0

Answer:

D

Step-by-step explanation:

Because the scale factor is 2:1, all sides on Triangle 2 (the smaller triangle), should be half the length of Triangle 1 (the larger triangle).

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Can somebody plz help answer these true or false questions correctly thanks!!! (As many as u can or know) :3
anzhelika [568]

Answer:

false

true false false false

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
63 1/4 divided by 2 1/5
Georgia [21]
63 1/4 divided by 2 1/5 is 253/40
3 0
3 years ago
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Find the difference. (9x^2-2x+7)-(+4x-1)
allochka39001 [22]

Answer:  9x^2 - 6x + 8

Step-by-step explanation:

(9x^2 - 2x + 7) - (4x - 1)     Subtract like terms

The term 9x^2 doesn't have any other term so it will stay alone.

-2x - 4x  = - 6x

7 - (-1) = 8

Put them together to get  9x^2 - 6x + 8  

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3 years ago
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State whether the quantity described is a parameter or a statistic and give the correct notation. Average household income for a
kogti [31]

Answer:

b) statistic.

Step-by-step explanation:

In applied statistical work we rarely have the opportunity to measure entire populations, instead we make inferences about the populations from samples drawn, ideally randomly from the population. We usually want to know averages from whole populations, but use the average from a sample as our best guess at the population average. The unknown population average is called a parameter. The known sample average is called a statistic.

As a matter of convention, most statistical texts use greek symbols for population parameters and the English or Arabic letters for sample statistics. For example, a sample mean is often denoted as x-bar . Population means are denoted with the lower-case greek letter mu μ .

4 0
4 years ago
The parking lot had 1.5 times as many trucks as cars. After 45 more cars came to the parking lot and 12 trucks left, there were
Harlamova29_29 [7]

Answer:

Total number of cars in the parking lot are 80.

Step-by-step explanation:

Let the number of cars = x and the number of trucks = y

Since, there are 1.5 times many cars than the truck, we get,

Number of cars = 1.5 time number of trucks

i.e. y=1.5x

Also, it is given that when 45 cars were added in the lot, 12 trucks left the parking lot.

So, we get,

Number of cars + 45 = Number of trucks - 12

i.e. x+45=1.5x-12

Finally, there are 17 cars more than the trucks.

We have the required equation, x+45=1.5y-12+17

i.e. x+45=1.5x+5

i.e. 45-5=1.5x-x

i.e. 40=0.5x

i.e. x= 80

Thus, the total number of cars in the parking lot are 80.

7 0
4 years ago
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