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3 years ago

8

- 3/5 - 1/5 in simpliest form

2 answers:

Liono4ka [1.6K]3 years ago

6 0

Answer:

−4/5

Step-by-step explanation:

3/5+1/5 Combine, 3+1/5 Simplify, 4/5

storchak [24]3 years ago

4 0

Answer -4/5
There both negative so you add the fractions
-3/5-1/5=-4/5

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The temperature in Anchorage, Alaska was -3°C in the afternoon. After the sun went down, the temperature dropped 6 degrees. Writ

Ira Lisetskai [31]

Answer:

-9

Step-by-step explanation:

-3 - 6

-3 + -6

-9

hope this helps!

7 0

3 years ago

Which graph represents the function of f(x) = the quantity of 9 x squared plus 9 x minus 18, all over 3 x plus 6

lora16 [44]

Answer:

The answer is the option C

graph of $3x$ minus $3$ , with discontinuity at negative $2$ , negative $9$

Step-by-step explanation:

we have

$f(x)=\frac{9x^{2}+9x-18}{3x+6}$

Simplify

$f(x)=9\frac{(x^{2}+x-2)}{3(x+2)}$

$f(x)=3\frac{(x^{2}+x-2)}{(x+2)}$

Step 1

Convert to a factored form the numerator

$x^{2}+x-2=0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$x^{2}+x=2$

Complete the square. Remember to balance the equation by adding the same constants to each side.

$x^{2}+x+0.25=2+0.25$

$x^{2}+x+0.25=2.25$

Rewrite as perfect squares

$(x+0.5)^{2}=2.25$

Square root both sides

$x+0.5=(+/-)1.5$

$x=-0.5(+/-)1.5$

$x=-0.5+1.5=1$

$x=-0.5-1.5=-2$

so

$x^{2}+x-2=(x-1)(x+2)$

Step 2

Simplify the function f(x)

$f(x)=3\frac{(x^{2}+x-2)}{(x+2)}=3\frac{(x-1)(x+2)}{(x+2)}$

The domain of the function f(x) is all real numbers except the number $x=-2$

Because the denominator can not be zero

$f(x)=3\frac{(x-1)(x+2)}{(x+2)}=3(x-1)=3x-3$

$f(x)=3x-3$ ------> with a discontinuity at $x=-2$

$f(-2)=3(-2)-3=-9$

The discontinuity is at point $(-2,-9)$

the answer in the attached figure

8 0

3 years ago

Read 2 more answers

If you roll a fair six-sided die and a fair four-sided die, what is the probability that the dice add to 6 or higher

Lena [83]

Okay so you have to figure out all the possible ways to get six or higher. between a 6 sided dice and a 4 sided dice. We do 6*24 to find all the possibilities.

The probability of getting a 6 or higher is 14/24

4 0

3 years ago

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Sara can type 90 words in 8 minutes at this rate how many words should she have typed in 28 minutes

ella [17]

Answer:

315

Step-by-step explanation:

i divided 90 by 9 to know how much she can type in one minute and timed it by 28 to know how much she can type in 28 minutes 90÷8×28 = 315

8 0

2 years ago

Write the sum using sigma notation 3^2+4^2+5^2+...+10^2

Vitek1552 [10]

$\sum\limits_{i=3}^{10}\big i^2$

or:

$\sum\limits_{i=1}^{8}\left(2+i\right)^2$

or:

x₁=3, x₂=4, x₃=5, .... x₈=10

$\sum\limits_{i=1}^{8}\big x_i^2$

6 0

3 years ago