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34kurt
3 years ago
9

(3x+4)(x-2) A.3x^2-2x-8 B.x-8 C.3x-2x-8 D.3x^2+2x+8

Mathematics
2 answers:
vlada-n [284]3 years ago
5 0

Answer:

A

Step-by-step explanation:

im smart ツ

ololo11 [35]3 years ago
3 0

Answer:

A. 3x^2-2x-8

Step-by-step explanation:

(3x+4)(x−2)

=(3x+4)(x+−2)

=(3x)(x)+(3x)(−2)+(4)(x)+(4)(−2)

=3x2−6x+4x−8

=3x2−2x−8

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A) The perimeter of a rectangle is the sum of the lengths of its four sides. Write an expression for the perimeter of the rectan
goblinko [34]

Answer:

Below

Step-by-step explanation:

The length of this triangle is 3x+1 and the width is x.

The perimeter P is:

P= 2(3x+1)+2*x

P= 6x+2+2x

P= 8x+2

Let's evaluate it when x=1/2

●1/2 =0.5

P= 8*0.5+2 =4+2= 6 ft

●●●●●●●●●●●●●●●●●●●●●●●●

The area A is:

A = (3x+1)*x

A= 3x^2 +x

Let's evaluate it when x=0.5 feet

A= 3*0.5^2 +0.5

A= 3*0.25+0.5

A= 0.75 +0.5

A= 1.25 ft^2

6 0
3 years ago
How to tell if your tower can have 2nd monitor?
riadik2000 [5.3K]
Check the tower to see if it has more than multipin monitor connector.
7 0
3 years ago
HELP ME ITS SO EASY BUT I NEED HELP
Naddika [18.5K]

Answer:

7.2111(4 decimal places)

Step-by-step explanation:

a squared by b squared=c squared

36 + 16 is 52, so then you need to square root 52 which is 7.2111 to 4 decimal places. I hope you benefit from this. Cheers

5 0
2 years ago
Choose the appropriate table for the differential equation dy/dx=x+1/x
kenny6666 [7]

Answer: 1.

x |0|0.5|2

dy/dx |2|5 |undefined

2.

x |0 |0.5| 2

dy/dx |undefined|5 | 2

3.

x | 0 |0.5|2

dy/dx|undefined |4 |2

Step-by-step explanation:

7 0
2 years ago
The amount of time Ricardo spends brushing his teeth follows a Normal distribution with unknown mean and standard deviation. Ric
Papessa [141]
Let X denote the number of minutes spent brushing his teeth, and let \mu be the mean and \sigma the standard deviation for this distribution.

\mathbb P(X

The z-score corresponding to this probability is approximately z=-0.2533, which means

\dfrac{1-\mu}\sigma=-0.2533\iff\mu-0.2533\sigma=1

Next, (note the sign change)

\mathbb P(X>2)=0.02\implies\mathbb P(X\le2)=\mathbb P\left(\dfrac{X-\mu}\sigma\le\dfrac{2-\mu}\sigma\right)=0.98

The corresponding z-score is approximately z=2.0538, so you have

\dfrac{2-\mu}\sigma=2.0538\iff\mu+2.0538\sigma=2

Solving the two equations for \mu and \sigma, you'll find that the mean is approximately \mu=1.1098 and the standard deviation is approximately \sigma=0.4334.
7 0
3 years ago
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