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2 years ago

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Mathematics

1 answer:

Elan Coil [88]2 years ago

4 0

Answer:

u mad bruv? xD Xd DxD XDXDXDdd

Step-by-step explanation:

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Which types of dilation are the given scale factors?

Drupady [299]

Answer:

Tbh Im new to this.

Step-by-step explanation:

i think -5/4 is con

3/8 is expansion

-1/2 is con

0.5 is con

I may be very wrong and im sorry but i tried

3 0

3 years ago

Answer this question

Stells [14]

Answer:

$\huge\boxed{width=12cm}$

Step-by-step explanation:

$l-length\\w-width\\P-perimeter$

The formula of perimeter of the rectangle:

$P=2l+2w=2(l+w)$

Substitute:

$l=6w\\\\P=168cm$

$168=2(6w+w)\\168=2(7w)\\168=14w\qquad|\text{divide both sides by 14}\\\\\dfrac{168}{14}=\dfrac{14w}{14}\\\\12=w\Rightarrow w=12(cm)$

3 0

3 years ago

A student solved 3/x−4=x/7 in six steps, as shown.

Stolb23 [73]

Answer:

Option A.

Step-by-step explanation:

The given equation is

$\dfrac{3}{x-4}=\dfrac{x}{7}$

Step 1: Multiply both sides by (x-4).

$3=\dfrac{x(x-4)}{7}$

Step 2: Multiply both sides by 7.

$21=x(x-4)$

Step 3: Using distributive property.

$21=x^2-4x$

Step 4: Isolate all terms on one side.

$0=x^2-4x-21$

Step 5: Find factors by splitting the middle term.

$0=x^2-7x+3x-21$

$0=x(x-7)+3(x-7)$

$0=(x-7)(x+3)$

Step 6: Using zero product property, we get

$x=-3, x=7$

It means student solved the equation correctly.

Therefore, the correct option is A.

5 0

3 years ago

Read 2 more answers

If a line has a slope of four and contains the point -2, five what is its equation in point slope form

Otrada [13]

Answer:

y - 5 = 4 (x - -2) or y - 5 = 4 (x + 2)

Step-by-step explanation:

Point-slope form:

y- y1 = m (x - x1 )

m = 4

x1 = -2

y1 = 5

fill in the blanks:

y - 5 = 4 (x + 2 )

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3 years ago

Multiply or divide as indicated. x -8 • x -2

erik [133]

Multiply the dot is always multiply

8 0

3 years ago

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