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3 years ago

Whats the answer? A, B, C, or D??

Mathematics

1 answer:

Marina86 [1]3 years ago

5 0

Answer:

That's an isosceles right trapezoid. The legs equal hypotenuse * (1 / sq root (2))

legs = 7 * 1 / sqroot (2)

Answer is D

Step-by-step explanation:

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Which angle is a complementary to angle BAC?

amm1812

Answer:

ΔDAE

Step-by-step explanation:

Complementary = 90°

ΔBAC has a right angle, which makes it 90°. Since ΔDAE also has a right angle, it would be complementary to ΔBAC.

6 0

3 years ago

Devansh buys a house for $189,900. The tax rate is 7.5%. How much was the tax on the home?

iren2701 [21]

The tax should be $14242.5

6 0

3 years ago

Read 2 more answers

Expand (2x-3y+3)^2<br><br> PLEASE HELP!!

Anon25 [30]

Answer:

4x² + 9y² + 12x - 18y - 12xy + 9

Step-by-step explanation:

Given

(2x - 3y + 3)² = (2x - 3y + 3)(2x - 3y + 3)

Each term in the second factor is multiplied by each term in the first factor, that is

2x(2x - 3y + 3) - 3y(2x - 3y + 3) + 3(2x - 3y + 3)

Distribute the 3 parenthesis

= 4x² - 6xy + 6x - 6xy + 9y² - 9y + 6x - 9y + 9 ← collect like terms

= 4x² + 9y² + 12x - 18y - 12xy + 9

3 0

3 years ago

Read 2 more answers

Solve for x<br> (1/x) -2/3 = (4x)

Vadim26 [7]

The value of x is $x=\frac{-1+\sqrt{37}}{12}$ and $x=\frac{-1-\sqrt{37}}{12}$

Step-by-step explanation:

The equation is $\frac{1}{x}-\frac{2}{3}=4 x$

Subtracting by $4x$ on both sides,

$\frac{1}{x}-\frac{2}{3}-4 x=0$

Taking LCM,

$\frac{3-12 x^{2}-2 x}{3 x}=0$

Multiplying by 3x on both sides,

$-12 x^{2}-2 x+3=0$

Dividing by (-) on both sides,

$12 x^{2}+2 x-3=0$

Using quadratic formula, we can solve for x.

$\begin{aligned}x &=\frac{-2 \pm \sqrt{2^{2}-4 \cdot 12 \cdot(-3)}}{2 \cdot 12} \\&=\frac{-2 \pm \sqrt{4+144}}{2 \cdot 144} \\&=\frac{-2 \pm \sqrt{148}}{24} \\&=\frac{-2 \pm 2 \sqrt{37}}{24}\end{aligned}$

Taking out common term 2, we get,

$\begin{array}{l}{x=\frac{-2(1 \pm \sqrt{37})}{24}} \\{x=\frac{-1 \pm \sqrt{37}}{12}}\end{array}$

Thus, the value of x is $x=\frac{-1+\sqrt{37}}{12}$ and $x=\frac{-1-\sqrt{37}}{12}$

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3 years ago

Explain how overproduction and variation work in the context of natural selection

Annette [7]

When more offspring than can survive are produced, it is called overproduction. Variation among these offspring exists. The offspring with variations more suited to their environments will be more likely to survive.

8 0

3 years ago