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3 years ago

Question 2 is this a function? (2,4),(1,1),(0,0),(1,-1),(2,4)

Mathematics

2 answers:

Vadim26 [7]3 years ago

8 0

No
there are multiple y values for 1 x(twice)

iren2701 [21]3 years ago

7 0

Hello!

The correct answer is no, because it has 2 repeating x values, because if a set of points have a repeating x value, it's not a function.

Hope this helps! ☺♥

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good morning fellow brainsters please help me i’m tired and i just drank a four loko... can’t think. will give 15 points

borishaifa [10]

Answer:

7. $x=3$

8. l=11cm and w=7 cm

9. $x-5\ge12$

10. $\frac{x}{3}\le15$

Step-by-step explanation:

Question 7.

The given expression is:

$12-3(2x+1)=7x-3(7+x)$

Expand the parenthesis using the distributive property:

$12-6x-3=7x-21-3x$

Group similar terms:

$-6x-7x+3x=-21+3-12$

Simplify

$-10x=-30$

Divide both sides by -10

$x=3$

Question 8:

Let the width of the rectangle be; $w$

The length of the rectangle is $l=w+4$

The perimeter is given as: $P=2(l+w)$

Given that the perimeter P=36, then:

$36=2[(w+4)+w)]$

$\implies 36=2(2w+4)$

Divide both sides by 2:

$\implies 18=2w+4$

Subtract 4 from both sides:

$\implies 18-4=2w$

$\implies 14=2w$

$\implies w=7$

The dimensions of the rectangle is: w=7 cm and l=7+4=11cm

Question 9

Let the number be x.

"5 fewer than the number" is written as $x-5$

"5 fewer than a number is at least 12" becomes

$x-5\ge12$

Question 10:

Let the number be x.

The quotient of a number and 3 is written as:

$\frac{x}{3}$

The quotient of a number and 3 is no more than 15 is written as;

$\frac{x}{3}\le15$

4 0

3 years ago

A wood stove burns 4 logs in 2 hours how many logs burn in 9 hours ?

ziro4ka [17]

Answer:

18 logs.

Step-by-step explanation:

Since a stove burns 4 logs per 2 hours, then the stove will burn 2 logs in one hour. There fore in 9 hours the stove will burn 2*9 which is 18 logs.

4:2= 2 logs per hour

2*9=18 logs per 9 hours.

8 0

3 years ago

Read 2 more answers

Avery brought 1 gallons of sports drink for the track team to practice. How many pints is that amount?

Shkiper50 [21]

The amount will be 8 pints

3 0

2 years ago

What is the product of -2x^3 + x -5 and x^3 – 3x?

lana66690 [7]

(-2x^3 +x -5) * (x^3 -3x)
= x^6*(-2*1) +x^4*(-2*-3 +1*1) +x^3*(-5) +x^2*(-3) +x(-5*-3)
= -2x^6 +7x^4 -5x^3 -3x^2 +15x

8 0

3 years ago

A real estate agent earns a 3% commission and has a goal of earning $6,000 in commissions next month. What is the dollar amount

OLEGan [10]

Answer:

he must have 200000 dollars to earn 6000 in commission

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2 years ago