2 years ago

Evaluate $\frac{20}{101}-\frac{20}{99}$. Express your answer in simplest form.

Mathematics

1 answer:

m_a_m_a [10]2 years ago

7 0

Detail: 37

Answer: 69

Gummi

Blick: 55

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Lowest to greatest plz help me

ella [17]

-3/2 , -3/7 , 0.75 , 2 i'm pretty sure this is right!

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3 years ago

10. rhombus abcd has vertices at a(-2, 7), b(8, 7), c(2, -1), and d (-8, -1).

horrorfan [7]

Answer: 80

Step-by-step explanation:

We can use the formula $A=\frac{d_{1}d_{2}}{2}$ , where $d_{1}, d_{2}$ are the lengths of the diagonals.

By the distance formula,

$AC=\sqrt{(-2-2)^{2}+(-1-7)^{2}}=\sqrt{16+64}=4\sqrt{5}\\BD=\sqrt{(-8-8)^{2}+(-1-7)^{2}}=\sqrt{256+64}=8\sqrt{5}$

So, the area is $\frac{(4\sqrt{5})(8\sqrt{5})}{2}=\boxed{80}$

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2 years ago

I need help please and thank you

ExtremeBDS [4]

Answer:

D=340

Step-by-step explanation:

360-180/9

360-20

340

4 0

3 years ago

Conditional Probability Assistance?

krek1111 [17]

Let the event $A=\{ Sophomore \}, B=\{ Boy \}$

The the probability of the events

$P(A \cap B)=\frac{5}{12+18} =\frac{1}{6}$

$P( B)=\frac{12}{12+18} =\frac{2}{5}$

The conditional probability

$P(Sophomore|Boy)=P(A|B)=\frac{P(A \cap B)}{P(B)} =\frac{1/6}{2/5} =\frac{5}{12}$

5 0

3 years ago

-15x + 5 = -10x + 25 solve for x

tatuchka [14]

Answer:

Move all terms containing x to the left side of the equation.

−5x+5=25

Move all terms not containing x to the right side of the equation.

−5x=20

Divide each term by −5 and simplify.

x=−4

Step-by-step explanation:

6 0

3 years ago