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2 years ago

Quizizz help 10 pts each brainiest guaranteed blah blah blah

Mathematics

2 answers:

emmainna [20.7K]2 years ago

5 0

Answer:

$5x^3-2x^2+2x+9$

Step-by-step explanation:

(5x^3+4x^2)−(6x^2−2x−9)

To find the opposite of 6x^2−2x−9 find the opposite of each term.

5x^3+4x^2−6x^2+2x+9

Combine 4x^2 and 6x^2 to get −2x^2.

5x^3-2x^2+2x+9

iragen [17]2 years ago

3 0

Answer:

Step-by-step explanation:

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Kaya's family spends $105 to rent a boat for 7 days. The total cost, c, of the boat rental is proportional to the number of days

Elza [17]

Answer:

$c=15d$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Let

c ----> the total cost of the boat rental

d ---> is the number of days, the family rents the boat

we know that

Kaya's family spends $105 to rent a boat for 7 days

For d=7 days, c=$105

Find the value of the constant of proportionality k

$k=\frac{c}{d}$

substitute the given values

$k=\frac{105}{7}=\$15\ per\ day$

therefore

The linear direct equation is equal to

$c=15d$

8 0

3 years ago

Complete the square: -3x^2 + 30x -52 express in vertex form

nadezda [96]

the answer to this is

the two is for the top of the five 2

-3(x - 5) +23

4 0

3 years ago

The odds in favor of a horse winning a race are 9:5. find the probability that the horse will win the race.

Alexeev081 [22]

Answer:

9/14.

Step-by-step explanation:

The probability is given as a fraction or percentage.

9:5 odds in favour of a horse winning means the horse will win 9 races for every 5 it does not win.

So the probability that this horse will win is 9/(9+5)

= 9/14.

6 0

1 year ago

What is the equation, in slope-intercept form, of the line that is perpendicular to the line

Vadim26 [7]

Answer:

y = -x-4

Step-by-step explanation:

In this question, we want to find the equation of a line.

Generally, the equation of a starlight line goes by the firm y = mx + c where m represents the slope and c represents the y-intercept

The first equation given, can be rewritten as ;

y = x -6 + 4

y = x - 2

From here, it is clear that our slope m is equal to 1.

Now if two lines are perpendicular, the product of their slopes equals -1

what i’m saying is m1•m2 = -1

Now since we know both lines are perpendicular, then we have the slope of the second line as -1 in value

Now after getting the slope, we need to write the equation using that point that falls on where the line passes through

Using;

y = mx + c for slope -1 and point (-2,-2)

we have;

-2 = -1(-2) + c

-2 = 2 + c

c = -2-2

c = -4

Thus our final equation is where we are having m to be -1 and c = -4

y = -1(x) -4

y = -x-4

ps : different equations in the note and on the screenshot. I followed what’s in the question!

4 0

3 years ago

A machine factory produces 2 parts per second. One shift is 10 hours long. What is the production rate in parts per shift?

BabaBlast [244]

60 seconds per minute

2 x 60 = 120 parts per minute

60 minutes per hour

120*60 = 7200 parts per hour

7200 x 10 hours = 72,000 parts per 10 hour shift

4 0

3 years ago