All categories

2 years ago

Choose all fractions equivalent to each given fraction

Mathematics

2 answers:

AnnZ [28]2 years ago

4 0

For a, 7/-8 and -(7/8) are both equivalent to -7/8 because they have 1 negative sign. It doesn't matter where it is on the fraction as long as there is only 1 negative sign.

For b, -2/-3 is equivalent to 2/3 because the double negatives cancel each other out to equal a positive.

Airida [17]2 years ago

3 0

Answer:

$\frac{-7}{8}$ = $-\frac{7}{8}$

$\frac{2}{3}$ = $\frac{-2}{-3}$

Step-by-step explanation:

the negative can just move down on -7

the negatives cancel out on -2/-3 to make 2/3

You might be interested in

For the 1,000-meter running event, Abby's mean time is 4.5 minutes with a standard deviation of 0.75 minutes. For the 800-meter

Lilit [14]

Answer:

He performed better in the 800 m race

Step-by-step explanation:

Obtain the standardized score for each event :

Zscore = (score - mean) / standard deviation

1000 meter :

Mean = 4.5 ; Standard deviation = 0.75 ; x = 4.1

Zscore = (4.1 - 4.5) / 0.75

Zscore = - 0.4 / 0.75 = - 0.5333

800 meter :

Mean = 3.2 ; Standard deviation = 0.4 ; x = 3

Zscore = (3 - 3.2) / 0.4

Zscore = - 0.2 / 0.4 = - 0.5

-0.5 > - 0.533

Hence, he performed better in the 800 m race

3 0

3 years ago

Read 2 more answers

The directrix of a parabola is x = 4. Its focus is (2,6) .

Sati [7]

Answer:

Step-by-step explanation:

If you plot the directrix and the focus, you can see that the focus is to the left of the directrix. Since a parabola ALWAYS wraps itself around the focus, our parabola opens sideways, to the left to be specific. The formula for the parabola that opens to the left is

$-(y-k)^2=4p(x-h)$

We will solve this for x at the end. The negative is out front because it opens to the left. If it opened to the right, it would be positive.

The vertex of a parabola is exactly halfway between the focus and the directrix, so our vertex coordinates h and k are (3, 6). P is defined as the distance between the vertex and the directrix, or the vertex and the focus. Since the vertex is directly between both the directrix and the focus, each distance is the same. P = 1. Filling in what we have now:

$-(y-6)^2=4(1)(x-3)$ which simplifies to

$-(y-6)^2=4(x-3)$

Now we will solve it for x.

$-(y-6)^2=4x-12$ and

$-(y-6)^2+12=4x$ so

$-\frac{1}{4}(y-6)^2+12=x$

4 0

3 years ago

Chad boughtsome things at the store he paid for them was $6 he received $4.52 in change how much did the things that he bought c

avanturin [10]

Answer:$1.08 cents.

Step-by-step explanation:

$6 - $4.52 = $1.08.

6 0

2 years ago

-6t-7=17 what does t equal

Grace [21]

Answer:

t=-4

Step-by-step explanation:

I know you don't care about any explanation, and just want the answer, but to get this, you can add 7 to both sides. Then you get -6t=24. Divide both sides by -6 and you get -4

7 0

2 years ago

What is the slope of the Line for (5,3) and (7,7)

frutty [35]

I think the slope is 5 and 7

5 0

2 years ago