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3 years ago

Rewrite the equation y - 31x = 93 as a function of x.

Mathematics

2 answers:

Nastasia [14]3 years ago

3 0

B is the right answer

swat323 years ago

3 0

Answer:

Step-by-step explanation:

B. g(x) = 31x + 93

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What are the roots of the function? f(x) =x^2 + 2x – 80

Andrej [43]

Answer:

x^2+2x-8= x^2+10x-8x-80 =x(x+10)-8(x+10)

=( x-8) (x+10)

therefore x= 8 or x=-10

7 0

2 years ago

the sides of a rectangle are in the ratio 5:7 and the perimeter of the rectangle is 96cm. What is the area of the rectangle?

dlinn [17]

Width = 5x
length = 7x

Perimeter = 10x + 14x = 24x = 96cm
x = 96/24 = 4cm

width = 5x = 20cm
length = 7x = 28cm

Area = (20cm x 28cm) = 560 cm²

6 0

3 years ago

solve this word problem leading to quadratic equation: the area of a rectangle is 60cm². The length is 11cm more than the width.

morpeh [17]

Answer:

Step-by-step explanation:

let : x The length and y the width you have this system :

xy =60....(1)

x = y+10...(2)

put the value for x in (1): (y+10)y =60

the quadratic equation is : y² +10y - 60 = 0

Δ =b² - 4ac a = 1 b= 10 c= - 60

Δ =10² - 4(1)(-60) = 324 =18²

y 1 = (-10-18)/2 negatif...... refused

y 2 = (-10+18)/2 =4

the width is 4

8 0

3 years ago

If Hanna extends the pattern in the highlighted rows to include a ratio that has a first term of 20, what would be the second te

podryga [215]

Answer:

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Step-by-step explanation:

5 0

3 years ago

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katrin2010 [14]

Answer: See below.

Step-by-step explanation:

Let's go number by number.

Rational pretty much means you can put it into a fraction of whole numbers.

The first number is -81,572.

This number is rational because it can be put into a fraction ( $\frac{-81572}{1}$ ) that is made up of whole numbers.

The second number is $\sqrt{11}$ .

This number is irrational because it cannot be put into a fraction of whole numbers.
Keep in mind that most squareroots are irrational. Especially those that don't equal a whole number.

The third number is 5.636336333

There is a pattern so the number is rational.
Usually a pattrn means it can be put into a fraction.

The fourth number is $\sqrt{16}$ . This equals 4 if you solve it out.

Since we just get 4, that certainly can be put into a fraction of whole numbers, so this is rational.

5 0

4 years ago

Read 2 more answers