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3 years ago

What Correct Solution That Define m(x) as a trinomial where, m(x)=(x+2)(7x-1)+3xsquar2-2

Mathematics

1 answer:

Rom4ik [11]3 years ago

8 0

(x + 2)(7x - 1) + 3x^ -2
= 7x^2 + 14x - x - 2 + 3x^2 - 2
= 10x^2 + 13x - 4 Answer

Its choice A

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Sammy bought a car and got a discount of 2/5 off the original price of $30,000. How much did Sammy pay for the car after the dis

SVETLANKA909090 [29]

Answer:

$18000

Step-by-step explanation:

To find the do $30000/5 ( do divide the price into 5 parts)

30000/5

6000

5/5 minus 2/5

3/5

6000 times 3

18000

3 0

3 years ago

In science class, the girl to boy ratio is 3 to 7.

Mariana [72]

Answer:

There are <u>35 boys</u> in the class.

Step-by-step explanation:

Girls to Boys ratio = 3:7

Total number of students in class = 50

Let total number of girls be '3x' and total number of boys be '7x'

Total number of girls + Total number of boys = Total number of students

3x + 7x = 50

10x = 50

x = 50/10

x = 5

$\therefore$

Total number of girls = 3 × 5 = 15

Total number of boys = 7 × 5 = 35

7 0

3 years ago

CAN SOMEONE HELP ME

ANTONII [103]

Answer:

C is the answer

you can also see

7 0

3 years ago

Pls help asap i will give brenerlist plus 10 points

Anastasy [175]

12 meters longer than his throw = t+12

So, option C is correct.

Step-by-step explanation:

We need to translate the word phrase into a math expression.

the word phrase is:

12 meters longer than his throw

Let throw = t

So, 12 meters longer than his throw = t+12

So, option C is correct

Keywords: translate the word phrase into a math expression.

Learn more about translate the word phrase into a math expression at:

#learnwithBrainly

7 0

3 years ago

Help please help me its a hard one

DanielleElmas [232]

Answer:

The sum of a and b is 12.

Step-by-step explanation:

Try drawing this figure. ABCD would actually be a triangle, rather than the common quadrilateral you would expect - considering there are 4 points plotted. Therefore, we would have to find the distance between respective points ( 0, 1 ) and ( 2, 5 ) / ( 2, 5 ) and ( 7, 0 ) / ( 0, 1 ) and ( 7, 0 ). Let's apply the distance formula and calculate the distance between each point, therefore determining the perimeter.

Distance between points ( 0, 1 ) and ( 2, 5 )

= $\sqrt{(2-0)^2+(5-1)^2}$

= $\sqrt{(2)^2+(4)^2}$

= $\sqrt{4+16}$

= $\sqrt{20}$ = $2\sqrt{5}$

Distance between points ( 2, 5 ) and ( 7, 0 )

= $\sqrt{(7-2)^2+(0-5)^2}$

= $\sqrt{5^2+(-5)^2}$

= $\sqrt{25+25}$

= $\sqrt{50}$ = $5\sqrt{2}$

And you can calculate the distance between points ( 0, 1 ) and ( 7, 0 ) to be exactly $5\sqrt{2}$ as well. Therefore, you can say that the perimeter of this triangle is $2(5\sqrt{2}) + 2\sqrt{5}$ = $10\sqrt{2} + 2\sqrt{5}$ . Note that this is similar to the form we are given. Thus, a = 10, and b = 2 - making it's sum 10 + 2 = 12.

8 0

4 years ago