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3 years ago

6 10/12 - 1 11/12

Mathematics

1 answer:

CaHeK987 [17]3 years ago

5 0

Correct answer is B. 4 11/12

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Foil: (x+9)(3x-4)

QveST [7]

QUESTION 1

The given binomial is;

$(x+9)(3x-4)$

First terms are multiplied: $x\times 3x=3x^2$

Outside terms are multiplied: $x\times -4=-4x$

Inside terms are multiplied: $9\times 3x=27x$

Last terms are Multiplied: $9\times -4=-36$

This gives us;

$=3x^2-4x+27x-36$

$=3x^2+23x-36$

QUESTION 2

We want to factor

$6r^5s+4r^4s^2-8r^2s$

The HCF is $2r^2s$

We factor to get;

$2r^2s(3r^3+2r^2s-4)$

QUESTION 3;

$x^2+x-2=0$

Split the middle term;

$x^2+2x-x-2=0$

Factor

$x(x+2)-1(x+2)=0$

$(x+2)(x-1)=0$

$(x+2)=0,(x-1)=0$

$x=-2,x=1$

The solutions are;

$x=-2$ and $x=1$

These are the x-intercepts of the graph of the function

$f(x)=x^2+x-2$

3 0

3 years ago

State the gradient of the line 2y = 3 - 2x.

lyudmila [28]

Answer:

Step-by-step explanation:

2y = 3 -2x

Rearrange the equation to slope-intercept form

y = -x + 3/2

Slope of line is 3/2.

8 0

3 years ago

Please help me I need to turn in tomorrow please help me

Monica [59]

Answer:

<em>Answer: A. 0.2</em>

Step-by-step explanation:

<u>Probability</u>

The circle graph shows the distribution of the makeup of the Riverside Municipal Choir.

The total number of choir sections is: 8+10+10+12=40

To calculate the probability of a member chosen at random comes from the alto section, we use the formula:

$\displaystyle P=\frac{8}{40}$

Calculating:

P = 0.2

Answer: A. 0.2

7 0

3 years ago

If you got $15 dollars everyday and you have $116 how long will it take to get $250

Rufina [12.5K]

You need 250-116=$134. At $15 a day this is 134/15=8.93 days approx. After 9 days you will reach $251.

5 0

3 years ago

Perform the indicated operation 11/b-7 - 2b-3/b-7 = ___

statuscvo [17]

Answer:

-2(b^2 + 7b - 4)/b

Step-by-step explanation:

You need to simplify the expression

8 0

3 years ago