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3 years ago

HELP ME PLS ASAP a and b

Mathematics

1 answer:

morpeh [17]3 years ago

6 0

Answer:

1. 5cm

2. 10cm

3. 20cm

4. 40 cm

Step-by-step explanation:

I think you need to double the area of the scaled factor.

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Five years ago Sara's aunt was four times as old as Sara. If Sara's aunt is 42 years older than Sara, how old is Sara now? Pleas

Nadusha1986 [10]

Adding a comment so the other answerer can get Brainliest :)

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3 years ago

What is the equation of the line perpendicular to 3x+y=6 that passes through the point (0,8)

Alekssandra [29.7K]

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$3x + y = 6$

$y = - 3x + 6$

The coefficient of x is the slope of the line , So the slope of the above equation is -3 .

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Remember from now on ,

Product of multiplying the slopes of two lines which are perpendicular to each other , is -1 .

Thus ;

$( - 3) \times (m) = - 1$

m is the slope of the line which we want.

$- 3m = - 1$

Negatives simplifies

$3m = 1$

Divide sides by 3

$\frac{3m}{3} = \frac{1}{3} \\$

$m = \frac{1}{3} \\$

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We have following equation to find the point-slope form of the linear functions :

$y - y(0) = m(x - x(0))$

x(0) and y(0) are the coordinates of the point which the line passed through.

$y - 8 = \frac{1}{3} (x - 0) \\$

$y - 8 = \frac{1}{3} x \\$

Add sides 8

$y = \frac{1}{3} x + 8 \\$

Done....

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3 years ago

Which function is the inverse of f(x) = –5x – 4?

ra1l [238]

Just took the test. A is the right answer.

5 0

3 years ago

Read 2 more answers

There were 178 old cars at the junkyard. Then a truck brought in some more cars. Now there are a total of 236 cars in the junkya

crimeas [40]

Answer:

<u>The correct answer is 58 cars.</u>

Step-by-step explanation:

Cars in the junkyard before the truck arrived with some = 178

Cars after the truck brought into the junkyard some more= 236

Cars brought in by the truck = 236 - 178

Cars brought into the junkyard by the truck = 58

<u>The number of cars brought by the truck is 58 cars.</u>

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4 years ago

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4vir4ik [10]

Answer:

same, 0, -5

Step-by-step explanation:

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2 years ago