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Sidana [21]
3 years ago
12

Evaluate -2a + 4b - 3c When a = 0.5, b = -3, and c = -0.25​

Mathematics
2 answers:
Rashid [163]3 years ago
3 0

Answer: -12.25

Step-by-step explanation: -2 x 0.5 = -1 & 4 x -3 = -12 & 3 x -0.25 = -0.75

Then you put it all together. So, -1 + -12 - (-0.75) = -12.25

Elan Coil [88]3 years ago
3 0

Answer;

I think it's -12.25 but im not 100%

Step-by-step explanation:

-2a=-1

4b=-12

3c=-0.75

-1+-12-(-0.75)=-12.25

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Triangle ABC is a scaled copy of triangle DEF. Side AB measures 12
Dima020 [189]

Answer:

1. The scale factor here is 1.5

2. The scale factor here is 2/3

Step-by-step explanation:

Here, we shall be dealing with scales of triangles.

we have two triangles;

ABC and DEF

longest sides are in the ratio;

12 : 8

1. What scale factor translates DEF to ABC?

The ratio of the length can be beaten down to 3:2

So therefore, we can see that by multiplying the sides of of DEF by 1.5, we can arrive at the sides of ABC

So the scale factor here is 1.5

2. This is like the other way round of what we have above.

By multiplying the sides of ABC by 2/3, we shall have the sides of DEF

4 0
3 years ago
Drag a statement or reason to each box to complete this proof.<br><br><br><br> If 4x+5=17, then x=3.
natita [175]

Statement                          Reason

1) 4x + 5 = 17                    Given

2) 4x + 5 - 5 = 17 - 5         Subtraction property of equality

3) 4x = 12                         Simplifying

4) 4x/4 = 12/4                   Division property of equality

5) x = 3                             Simplifying

6 0
3 years ago
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Jacks living room is 16 feet by 20 feet long. if a scale drawing of his living room uses a scale of 3/4 inches= 6 feet, find the
Juli2301 [7.4K]

Answer:

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Step-by-step explanation:

16×20=320

320÷6=53.33

53.33×3=159.99

159.99÷4=39.9975

39.9975 rounded would be 40

6 0
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Answer:

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Step-by-step explanation:

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The whole angle of the upward left corner is 90 degrees.

90-55=35

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Angle 2 is 35 degrees.

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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