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nydimaria [60]
3 years ago
7

Is -1/4 a rational number

Mathematics
1 answer:
pav-90 [236]3 years ago
5 0

Answer:

Yes.

Step-by-step explanation:

It can be expressed as a ratio and it is a fraction.

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A couple has 10 children. What is the probability that 7 of these are girls?
pashok25 [27]
I think its 7/10 because there are 10 kids and you think 7 are girls.
3 0
3 years ago
Find the equation of a parabola with vertex at the origin and focus (0, -32).
mrs_skeptik [129]

Answer:

x^2 = -128y

Step-by-step explanation:

The general formula for this type of parabola is x^2 = 4ay  where a is  the y coordinate of the focus. So 4a = 4*-32 = 1-28.

So the answer is  x^2 = -128y

4 0
4 years ago
Which is the value of the expression ((10^4)(5^2)/(10^3)(5^3))^3
dimulka [17.4K]

Answer:

8

Step-by-step explanation:

Let's set this up to see if we can simplify it a bit:

(\frac{10^4*5^2}{10^3*5^3})^3

Notice we have 4 tens on top and 3 on bottom, so we can eliminate the bottom 3 altogether and leave just one on top.  And we have 2 fives on the top and 3 on bottom, so we can eliminate the 2 on the top and leave one on the bottom.  Now that looks like this:

(\frac{10}{5})^3

10 divided by 5 is 2, and 2 cubed is 8

8 0
3 years ago
45 is 0.9% of what number
RUDIKE [14]

Answer:

0.405

Step-by-step explanation

45 x 0.9%= 0.405

8 0
3 years ago
Read 2 more answers
Angle Side Relationship 1/5<br> Will mark brainlist to whoever answers first
tresset_1 [31]

Answer:

m<A > m<B > m<C

Step-by-step explanation:

In triangles, the measure of angles is proportional with the side length's they see,

The angle with the biggest the biggest measure sees the biggest side length

in triangle ABC the side lengths are given as

BC = 14, CA = 13 and AB = 5

from this, we can conclude:

m<A > m<B > m<C

3 0
2 years ago
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