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Crazy boy [7]
2 years ago
8

Please Answer due today 100 points

Mathematics
2 answers:
Alenkinab [10]2 years ago
7 0

Answer:

A scaled copy is a copy of an figure where <u>every</u> length in the original figure is multiplied by the same number.

The original figure A is 2 units wide and 2 units high.  The scaled copies must follow the same ratio of width to height (2 : 2), as well as the vertices of the figure remaining the same.

Therefore, figures 2 and 4 are scaled copies only.

No, for figure B to be a scaled copy, the width would also have to be scaled down. As the width has remained the same in both figures, figure B is not a scaled copy.

A & D are scaled copies

<u>Question 4</u>

1.  5 · 3 = 15

2. 4 · 8 = 32

3. 6 · \dfrac32 = 9

4. 12 · \dfrac14 = 3

Semmy [17]2 years ago
4 0

Answer:

Figure 2 and figure 4

Yes I agree with Tyler

A

C
D

Step-by-step explanation:

Figures 2 and 4 are not slanted which changes the original form, unlike the others.

I agree with Tyler because the size is not only smaller but it says that it was scaled by 2 more centimeters than the original figure.

I believe its the others because the other one is scaled upwards unlike the rest.

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Kisachek [45]

2

it like trying to imagine re-folding back a cardboard box

6 0
2 years ago
During one month, a homeowner used 600 units of electricity and 100 units of gas for a total cost of $344. The next month, 400 u
leonid [27]

Answer: the cost per unit of gas is $0.38

Step-by-step explanation:

Let x represent the cost per unit of electricity.

Let y represent the cost per unit of gas.

During one month, a homeowner used 600 units of electricity and 100 units of gas for a total cost of $344. It means that

600x + 100y = 344- - - - - - - - - -1

The next month, 400 units of electricity and 250 units of gas were used for a total cost of $299.

It means that

400x + 250y = 299- - - - - - - - - -1

Multiplying equation 1 by 400 and equation 2 by 600, it becomes

240000x + 40000y = 137600

240000x + 150000y = 179400

Subtracting, it becomes

- 110000y = - 41800

y = - 41800/- 110000

y = 0.38

Substituting y = 0.38 into equation 1, it becomes

600x + 100 × 0.38 = 344

600x + 38 = 344

600x = 344 - 38 = 306

x = 306/600

x = 0.51

4 0
3 years ago
Which is the simplified form of -7+5-12?
sineoko [7]

Answer:

- 14

Step-by-step explanation:

- 7 + 5 - 12 \\ ( - 7 + 5) - 12 \\  - 2 - 12 \\  = -  14

hope this helps

brainliest appreciated

good luck! have a nice day!

8 0
3 years ago
Read 2 more answers
Write the following equation in logarithmic form <br> a^(4b-6)=3c+d
Tomtit [17]

Hello from MrBillDoesMath!

Answer:  (4b-6) log(a) = log (3c + d)

Discussion:

Take the log of both sides of the equation:


log ( a ^(4b-6))  = log (3c + d)  


As the log functions causes exponents to become multiplexers, this equation is the same as


(4b-6) log(a) = log (3c + d)


Thank you,

MrB

3 0
3 years ago
A machine with velocity ratio of 5 is used to raise a load with an effort of 500N . If the machine is 80% efficient , determine
Yanka [14]

Answer:

Solutions given:

Velocity ratio V.R =5

effort =500N

efficiency =80%

magnitude of load=?

mechanical advantage [M.A ]

we have

efficiency =M.A/V.R*100%

80=M.A./5*100

80/100*5=M.A

M.A.=4

again

we have

M.A =load/effort

4=load/500

load=500*4

load=2000N

<h3><u>the magnitude of the load is 2000N</u>.</h3>
7 0
3 years ago
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