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3 years ago

14

Can someone help me find the way to get this answer??

1 answer:

3241004551 [841]3 years ago

3 0

It would b B (12.56)

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If s(x) = 2x2 + 3x - 4, and t(x) = x + 4 then s(x) · t(x) =

Paladinen [302]

Answer:

$\large\boxed{s(x)\cdot t(x)=2x^3+11x^2+8x-16}$

Step-by-step explanation:

$s(x)=2x^2+3x-4,\ t(x)=x+4\\\\s(x)\cdot t(x)\\\\\text{use the distributive property:}\ a(b+c)=ab+ac\\\\s(x)\cdot t(x)=(2x^2+3x-4)(x+4)\\\\=(2x^2+3x-4)(x)+(2x^2+3x-4)(4)\\\\=(2x^2)(x)+(3x)(x)+(-4)(x)+(2x^2)(4)+(3x)(4)+(-4)(4)\\\\=2x^3+3x^2-4x+8x^2+12x-16\\\\\text{combine like terms}\\\\=2x^3+(3x^2+8x^2)+(-4x+12x)-16\\\\=2x^3+11x^2+8x-16$

7 0

4 years ago

Find the missing angles.

8_murik_8 [283]

Answer:

<em>From left to right: 54 deg, 51 deg, 47 deg</em>

Step-by-step explanation:

From the bottom right triangle:

105 + 28 + x = 180

x + 133 = 180

x = 47

The lower right triangle has angles measuring 28, 105 and 47.

The lower unknown angle of the upper right triangle is vertical to the 47 deg angle, so it also measures 47 deg.

Now we calculate the upper unknown angle of the upper triangle.

82 + 47 + y = 180

y + 129 = 180

y = 51

One angle forms a linear pair with the 105-deg angle. It measures

180 - 105 = 75.

The large left triangle has angles 75 deg, 51 deg, and the unkown angle at the left.

z + 51 + 75 = 180

z + 126 = 180

z = 54

7 0

3 years ago

Solve the problem below.<br><br><br><br> 57°<br><br> 123°<br><br> 114°<br><br> 66°

grandymaker [24]

Answer:

66

Step-by-step explanation:

5 0

4 years ago

What is the step by step process of this problem? 6+2[-8-3(2x+4)]+10x

Romashka [77]

<u>So with more than one pair of parentheses, you must start from the inside and make your way outside.</u>

So firstly, distribute -3 to (2x + 4):

$6+2[-8-6x-12]+10x$

Next, combine like terms:

$6+2[-6x-20]+10x$

Next, distribute 2 to [-6x - 20]:

$6-12x-40+10x$

Lastly, combine like terms and <u>your final answer will be $-2x-34$ </u>

6 0

3 years ago

Which is the best estimate of x based on rounding the constants and coefficients in the equation to the nearest integer? 6.2x+1.

DerKrebs [107]

<span>6.2x+1.2=8.9
</span>estimate<span>
6x + 1 = 9
6x = 8
x = 8/6
x = 1.33

answer
x = 1.33</span>

7 0

3 years ago