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11111nata11111 [884]

3 years ago

15

a family read the odometer before starting a trip.it read 25861.4 and they know they will be driving 353.2 mi.what will it read

at the end of the trip?

1 answer:

Snowcat [4.5K]3 years ago

8 0

:)

26214.6 = 25861.4 + 353.2

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Jason is drawing a blueprint of his bedroom for his new house. Using a scale of 1 inch = 3.5 feet, he drew his bedroom 3 inches

svetoff [14.1K]

The approximate area will be 128.63 ( or 128.625 ) feet squared

4 0

3 years ago

aivan3 [116]

Answer:

part A) The scale factor of the sides (small to large) is 1/2

part B) Te ratio of the areas (small to large) is 1/4

part C) see the explanation

Step-by-step explanation:

Part A) Determine the scale factor of the sides (small to large).

we know that

The dilation is a non rigid transformation that produce similar figures

If two figures are similar, then the ratio of its corresponding sides is proportional

so

Let

z ----> the scale factor

$\frac{CB}{C'B'}=\frac{CD}{C'D'}=\frac{BD}{B'D'}$

The scale factor is equal to

$z=\frac{CB}{C'B'}$

substitute

$z=\frac{4}{8}$

simplify

$z=\frac{1}{2}$

Part B) What is the ratio of the areas (small to large)?

<em>Area of the small triangle</em>

$A=\frac{1}{2}(2)(4)=4\ units^2$

<em>Area of the large triangle</em>

$A=\frac{1}{2}(4)(8)=16\ units^2$

ratio of the areas (small to large)

$ratio=\frac{4}{16}=\frac{1}{4}$

Part C) Write a generalization about the ratio of the sides and the ratio of the areas of similar figures

In similar figures the ratio of its corresponding sides is proportional and this ratio is called the scale factor

In similar figures the ratio of its areas is equal to the scale factor squared

4 0

4 years ago

A high school student named David Merrell did a study of how music affects the ability of rats to run a maze. He trained 71 rats

Alona [7]

Step-by-step explanation:

Heavy Metal "music" impacts negatively the long term memory, if at least the ability to access it.

while harmonic music has no blocking effect or maybe even strengthens the long term memory and the ability to access it.

here 3 remarks.

first 2 scientifically from psychology : memory works mostly associative. that means brains do not store absolute information like a digital computer, but always in combination and association with other pieces of information. if there is nothing else to remember (like a more or less random pattern of sound effects for that the brain cannot find a rule or concept for), there are no associations with presented pieces of information, and the storage and access to it is much harder and restricted.

and - loud crashing and seemingly random noise triggers the panic mode in our brains. and panic is the mode favoring pure instinct and suppressing cognitive functions.

and finally, personally, it just confirms what I literally feel when listening to such music : it destroys at that moment any ability to keep a straight thought, prolonged exposure gives me the feeling that something gets broken inside my brain and thought processes.

I suspect that this is exactly the feeling that the fans of this kind of music are after (kind of like most drugs), but I am not surprised that there actually is something broken in the brain (again, as with drugs).

4 0

2 years ago

A plumbers bill is £463.20 plus VAT. The current rate of VAT is 20% what is the actual cost of work done

Jet001 [13]

Actual cost = bill + VAT*bill
= bill*(1 +VAT)
= £463.20*(1 +0.20)
actual cost = £555.84

4 0

4 years ago

A deli receives a large order for sandwiches for a company picnic. The company wants one club sandwich and two regular sandwiche

Goshia [24]

Answer:

(3+4)n+5

Step-by-step explanation:

We dont know how many people there are, and we know that each person will have a club (3slices), and 2 regular (4slices) and 1 extra dagwood (5)

So

(3+4)n+5

6 0

4 years ago