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4 years ago

I got 25 so I wanted to know if I'm correct

Mathematics

2 answers:

IgorC [24]4 years ago

6 0

Wrong correct answer is 55

kvasek [131]4 years ago

3 0

I feel it should be 30 because x represents the number of lessons, and 30 is multiplied by that.

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On which days did it rain less then one-fifth of an inch

nasty-shy [4]

Answer:

on which days did it rain less then one-fifth of an inch

Step-by-step explanation:

3 0

3 years ago

-1 + 3 (x + 2) =5(1 + 8x)<br> my papers due at 4 and i dont understand the question or how to do it

Burka [1]

Answer:

x = 0

Step-by-step explanation:

-1 +3(x + 2) = 5(1 + 8x)

-1 +3x +6 = 5 + 40x

3x + 5 = 5 + 40x

3x - 40x = 5 - 5

-37x = 0

x = 0

4 0

3 years ago

In the game of roulette, a player can place a $4 bet on the number 23 and have a StartFraction 1 Over 38 EndFraction probabili

Lina20 [59]

Answer:

a.The expected value of the game to the player is -$0.2105

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Step-by-step explanation:

Please kindly check the attached files for explanation.

6 0

4 years ago

Determine if two triangles are congruent. If they are, state how you know.

nataly862011 [7]

Answer:

B. SSS

Step-by-step explanation:

The two triangles already have 2 congruent sides, and the only missing thing to see is that they both share the same side with one another. This automatically makes them congruent.

6 0

3 years ago

Please help! 3 Questions please show how you solved the problem

borishaifa [10]

Answer:

1. $3y^2+2y-11$

2. $8y^{7}x^{5}z^2$

3. $x^3-9x^2+14x+24$

Step-by-step explanation:

1. We have been given an expression $(-y^2-4y-8)-(-4y^2-6y+3)$ and we are asked to subtract and simplify our given expression.

Using order of operations (PEMDAS), first of all let us remove parenthesis.

$-y^2-4y-8+4y^2+6y-3$

Now let us group like terms.

$(-y^2+4y^2)+(-4y+6y)+(-8-3)$

Upon combining like terms our expression simplifies to:

$(3y^2)+(2y)+(-11)$

$3y^2+2y-11$

Therefore, our expression simplifies to $3y^2+2y-11$ .

2. We have been given an expression $(2x^2y^3z^2)*(4xy^4x^2)$ and we are asked to multiply and simplify our given expression.

$(2x^2y^3z^2)*(4y^4x*x^2)$

$(2x^2y^3z^2)*(4y^4x^3)$

Using exponent property $a^b*a^c=a^{b+c}$ we will get,

$2*4x^{2+3}y^{3+4}z^2$

$8x^{5}y^{7}z^2$

$8y^{7}x^{5}z^2$

Therefore, our given expression simplifies to $8y^{7}x^{5}z^2$ .

3. We are asked to multiply and simplify our expression $(x-4)(x^2-5x-6)$ .

Using distributive property we will get,

$x*x^2-5x*x-6*x-4*x^2-5x*-4-6*-4$

$x^3-5x^2-6x-4x^2+20x+24$

Upon combining like terms we will get,

$x^3+(-5x^2-4x^2)+(-6x+20x)+24$

$x^3+(-9x^2)+(14x)+24$

$x^3-9x^2+14x+24$

Therefore, our given expression simplifies to $x^3-9x^2+14x+24$ .

8 0

3 years ago