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3 years ago

Evaluate. 21 + } + (-)) - Enter your answer as a mixed number in simplest form in the box.

Mathematics

1 answer:

andrew-mc [135]3 years ago

3 0

Evaluate: 2(1/4) + 2/5 ÷ (-1/2) - 1/4

⇛9/4 + 2/5 ÷ (-1/2) - 1/4

Take the LCM of the 4 and 5 is 20.

Again, 2 and 4 is 4.

⇛[(54+8)/20] ÷ [(-2 - 1)/4]

⇛62/20 ÷ (-3/4)

⇛62/20 × 4/-3

⇛62/{5*(-3)}

⇛62/-15.

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Pleases help with 4-9!

Serhud [2]

Step-by-step explanation:

The answer is

$m = \frac{4 - 0}{0 - ( - 2)} = \frac{4}{2} = 2$

$m = \frac{3 - 0}{0 - 4} = \frac{ - 3}{4}$

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3 years ago

Please, help me on this question, guys! I know the answer for (a) so I'll write down, too. For (b) I tried "$89,000 because that

Alexeev081 [22]

Let x be a random variable representing the price of a Congo-imported black diamond. Let the higher price be p. Then,
P(x < p) = P(x < (p - mean)/sd) = P(x < (p - 60,430)/21,958.08) = P(z < 2)
Therefore,
(p - 60,430)/21,958.08 = 2
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Therefore, The required price is $104,346.16

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3 years ago

The formula for the area of a triangle is 1/2bh=A. Which of the following is not a possible first step to rearrange this formula

mart [117]

A: Multiply by 12

The 1/2 is already multiplied by the bh, so in order to "undo" that multiplication, you have to do the opposite, which is to divide.

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4 years ago

Which expression is equivalent to 2x^2 - 6xy + 4xy - y^2

Agata [3.3K]

<h2>Answer: $2 x^{2}$ - 2xy - $y^{2}$ </h2>

Step-by-step explanation:

All you have to do to get the answer is Add similar elements : -6xy + 4xy = -2xy

Then you final answer is going to be $2 x^{2}$ - 2xy - $y^{2}$ .

* Hopefully this helps:) Mark me the brainliest:)!!!

∞ 234483279c20∞

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4 years ago

5p−3p+9+p+3? pls im failingg

Triss [41]

Answer:

3p + 12

Step-by-step explanation:

5p -3p + 9 + p + 3

Move around the parts of the equation

5p -3p + p + 9 + 3

Add positive 9 to positive 3

5p -3p + p + 12

Add positive p to negative 3p

5p -2p + 12

Combine positive 5p and negative 2p together

3p + 12

I Hope That This Helps! :)

7 0

3 years ago