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3 years ago

Select the correct answer.

Mathematics

1 answer:

IrinaVladis [17]3 years ago

5 0

Answer: B

Step-by-step explanation:

Reflection does preserve side length and dilation preserves angles.

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How do you solve 3 1/4- 1 7/8 step by step?

Vilka [71]

Answer:

1 3/8.

Step-by-step explanation:

3 1/4 - 1 7/8

First convert to improper fractions:

3 1/4 = (3*4) + 1 / 4 = 13/4.

1 7/8 = (1 *8)+7 / 8 = 15/8. So we have:

13/4 - 15/8

The Lowest Common Multiple of 4 and 8 is 8 so we convert 13/4 to eighth's

13 / 4 = 13*2 / 4 *2 = 26/8

Finally: we have

26/8 - 15/8 = (26 - 15) /8

= 11 /8

= 1 3/8 (answer)

4 0

3 years ago

The scale drawing of a window is 1 inch by 2 inches. The actual size of the window is 24 inches by 48 inches.

weeeeeb [17]

This means that every 1 inch in the drawing is 24 inches of the actual size.

Hope this helps!

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3 years ago

1 Are these similar triangles?

garik1379 [7]

Answer:

NOPE

Step-by-step explanation:

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3 years ago

Factor as the product of two binomials <br> X^2 +8x +12 = ?

aksik [14]

The answer to this is (x+6)(x+2)

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3 years ago

How would I solve this Rational Equation? <br><br>Solve for all values of x.

Nesterboy [21]

9514 1404 393

Answer:

x = 4

Step-by-step explanation:

I like to put these in the form f(x) = 0. We can do that by subtracting the right side. Common factors can be cancelled from numerator and denominator, provided they are not zero.

$\dfrac{7}{x+3}+\dfrac{3}{x-3}-\dfrac{x}{x-3}=0\\\\ \dfrac{7(x-3)+(x+3)(3-x)}{(x+3)(x-3)}=0\\\\\dfrac{(x-3)(4-x)}{(x-3)(x+3)}=0\\\\ \dfrac{4-x}{x+3}=0\qquad x\ne3\\\\x=4 \qquad\text{equate the numerator to zero, add $x$}$

_____

If you leave the numerator as (x-3)(4-x), then there are two values of x that make it zero. Because x=3 makes the equation "undefined", it cannot be considered to be a solution.

4 0

3 years ago