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2 years ago

Evaluate the expression. 9 + 9 X 6 - 7=?

Mathematics

1 answer:

Ahat [919]2 years ago

6 0

9+54-7
63-7
=56
The answer is 56

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I need help with this problem! Please show work so i can get credit for my work

ser-zykov [4K]

Answer:

x= -43 or x=57

Step-by-step explanation:

Apply absolute value rule: If |u|=a, a>0 then u=a or u=-a

So applying that to our equation:

|x-7|=50, x-7 can either equal +50 or -50 so we solve for both

x-7= -50 ---> x= -43

x-7=50 ---> x=57

I hope this helps!

4 0

2 years ago

Fern knitted 20 scarves over 5 nights. After 8 nights of knitting, how many scarves would fern have made in total.

Studentka2010 [4]

Answer:

Fern will knit 32 scarves in 8 nights.

Step-by-step explanation:

Number of scarves knitted by Fern in 5 night = 20

Relation between number of scarves knitted and number of nights is proportional,

Therefore, Number of scarves knitted (s) ∝ Number of nights spent to knit the scarves (n)

s ∝ n

s = kn

k = $\frac{s}{n}$

Here, k = proportionality constant

For s = 20 and n = 5,

k = $\frac{20}{5}$

k = 4 scarves per night

For 8 nights, by using the same proportionality rule,

k = $\frac{s}{8}$

4 = $\frac{s}{8}$

s = 32 scarves

Therefore, Fern will knit 32 scarves in 8 nights.

4 0

2 years ago

What is the inverse function of f(x)= 4- x/6

Westkost [7]

Answer:

$f^{-1}(x) = 6(4-x) = 24-6x$

Step-by-step explanation:

Let $y=f(x)$ and swap x and y:

$x = 4 - \frac{y}{6}$

Then, rearranging for y:

$x+\frac{y}{6} = 4$

$\frac{y}{6}= 4-x$

$y= 6(4-x) = 24-6x$

6 0

2 years ago

I NEED HELP ASAP!!!!

Degger [83]

I hope this helps you!

4 0

3 years ago

What is 45,920 in word from

Illusion [34]

Forty-Five Thousand Nine Hundred Twenty

6 0

2 years ago

Read 2 more answers