2 years ago

Pls help plssssss thank you 20 points

Mathematics

1 answer:

Tomtit [17]2 years ago

8 0

Answer:

7x - 10 < 11

Step-by-step explanation:

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If x+1 and x-1 are the factors of the polynomial ax^3 + x^2 - 2x +b,find the values of a and b

Nadusha1986 [10]

The polynomial remainder theorem says that dividing a polynomial $p(x)$ by $x-c$ leaves a remainder of $p(c)=0$ if $x-c$ is a factor of $p(x)$ . In this case, check $c=-1$ and $c=1$ .

$a(-1)^3+(-1)^2-2(-1)+b=-a+b+3=0$

$a(1)^3+(1)^2-2(1)+b=a+b-1=0$

From the first equation,

$-a+b+3=0\implies a=b+3$

and substituting into the second gives

$(b+3)+b-1=0\implies2b+2=0\implies b=-1\implies a=2$

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3 years ago

Solve for X. 16 - X = -2 A: X= -18 B: X= -14 C: X= 14 D: X= 18

tatuchka [14]

D. X=18
Exp:
16-X=-2
-16 -16
-X=-18
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3 years ago

Read 2 more answers

Cassidy's goal is to raise more than $75 for charity. She has already raised $6. Now she is selling cupcakes for $3 each to reac

hodyreva [135]

$75= Cassidy's goal
c= number of cupcakes
a= $6 already raised

EQUATION:
75<$3c + a
substitute $6 in for a

75< $3c + 6
subtract 6 from both sides

69<3c
divide both sides by 3

23<c

Cassidy needs to sell at least 23 cupcakes to reach her goal of $75.

Answer:

FALSE: Cassidy will need to sell any number of cupcakes greater than 12 to reach her goal.

TRUE: Cassidy will need to sell any number of cupcakes greater than 23 to reach her goal.

Hope this helps! :)

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3 years ago

a map of Texas uses the scale of 1.5 to represent 60 miles the distance between corpus Christi to Houston is 60 miles what is th

Mama L [17]

Answer:ahhhh

Step-by-step explanation:

I hope this helps

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3 years ago

Solve the following equation for z. 3yz+z=-2

vodomira [7]

Answer:

z=-2/3y+1

Step-by-step explanation:

Let's solve for z.

3yz+z=−2

Step 1: Factor out variable z.

z(3y+1)=−2

Step 2: Divide both sides by 3y+1.

z(3y+1)

3y+1

−2

3y+1

−2

3y+1

Answer:

−2

3y+1

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3 years ago