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3 years ago

Missing addend for 389+_=489

Mathematics

2 answers:

Harrizon [31]3 years ago

5 0

Just do 489 - 389 and you will get 100

I hope this helps!

Plz put brainliest plz

astra-53 [7]3 years ago

3 0

Just put 489 - 389 = 100

so your answer is 100

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Whats thw perimeter of a rectangle with length 12 m and width 5 m?

Sphinxa [80]

Perimeter = 34m

hope thats what your asking

7 0

3 years ago

Which quadratic function has Vertex (-1,4) and passes through (4,19) HELP

hichkok12 [17]

Answer:

$f(x)=\frac{3}{5}(x+1)^2+4$

Step-by-step explanation:

The equation of a quadratic function in vertex form is given by:

$f(x)=a(x-h)^2+k$

Where (h,k) is the vertex.

It was given in the question that the vertex of the parabola is (-1,4).

When we substitute the vertex into the formula we get:

$f(x)=a(x+1)^2+4$

The parabola also passes through (4,19) hence it must satisfy its equation.

$19=a(4+1)^2+4$

$19-4=a(5)^2$

$15=25a$

We divide both sides by 25 to get:

$a=\frac{15}{25}= \frac{3}{5}$

Hence the quadratic function is:

$f(x)=\frac{3}{5}(x+1)^2+4$

6 0

3 years ago

Please Help Me On These Questions!!!!!! I need Help!!!!!

melisa1 [442]

1. This is one confusing question... But here is what I did
x = 2y + 1
y = $3y^{2}$ + 2x

So plug in Y to solve for X
x = 2 ( $3y^{2}$ + 2x) + 1
x = $-2y^{2}$ - $\frac{1}{3}$
Not sure if that's completely correct, but I'm positive I didn't make any mistakes...

5. You have to find the multiples of 60 so...

1 60
2 30
3 20
4 15
5 12 <---

7 = 12 - 5

4 0

3 years ago

AP Statistics

Ksivusya [100]

A) For this problem, we will need to use a normal calculation, in that we find the z-score and the area to the right using Table A.

z = (10 - 7.65) / 1.45

z = 1.62

area to the left for a z-score of 1.62 = 0.9474

area to the right for a z-score of 1.62 = 0.0526

The probability that a randomly selected ornament will cost more than $10 is 0.0526 or 5.26%.

B) For this problem, we will use the binomial probability formula since the problem is asking for the probability that exactly 3 ornaments cost over $10. There are two forms of this equation. One is nCr x p^r x q^n-r and the other is (n r) x p^r x (1 - p)^n-r. I will show both formulas below.

8C3 x 0.0526^3 x 0.9474^5

(8 3) x 0.0526^3 x 0.9474^5

With both equations, the answer is the same. Whichever you are more familiar or comfortable with is the one I would recommend you use.

The probability that exactly 3 of the 8 ornaments cost over $10 is 0.00622 or 0.622%.

Hope this helps!! :)

5 0

3 years ago

Help me pls I really need it

LekaFEV [45]

It would take 1 & 4/5
which is an estimate of 2
I got 1 & 4/5 because i multiplied 3/5 & 3

hopefully this helps

7 0

3 years ago