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ziro4ka [17]
3 years ago
7

the male elephant at the city zoo weigh 8,000 pound, which is the same as 4 tons. the female elephant weigh 7,000 pounds. how ma

ny tons does she weigh?
Mathematics
1 answer:
zvonat [6]3 years ago
6 0

Answer:

3.5 tons

Step-by-step explanation:

Divide the pounds for the male by the amount of tons it is.

8000/4 = 2000

This is how many pounds are in one ton.  Divide the weight of the female by this.

7000/2000 = 3.5

The female weighs 3.5 tons.

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The centroid of a triangle is at (8, 7). One vertex of the triangle is at (0, 1). What is the midpoint of the side opposite this
RideAnS [48]

Answer:

(12,10)

Step-by-step explanation:

Let the midpoint of the side opposite this vertex have coordinates B(a,b)

We have the centroid at C(8,7) and the vertex of the triangle at A(0,1).

The centroid divides AB internally in the ratio 2:1

We use the formula:

(\frac{mx_2+nx_1}{m+n},\frac{my_2+ny_1}{m+n})

where m:n=2:1 is the ratio of internal division.

We substitute the coordinates of A and B and the ratio to get:

(\frac{2a+1*0}{2+1},\frac{2b+1*1}{2+1})

This should simplify and give us the centroid.

(\frac{2a}{3},\frac{2b+1}{3})=(8,7)

This implies that:

\frac{2a}{3}=8,\frac{2b+1}{3}=7

We solve for a and b

2a=24,2b+1=21

a=12,b=10

Therefore the midpoint of the side opposite this vertex is (12,10)

7 0
3 years ago
Couldn’t figure out 3 of my questions
AleksandrR [38]
Option b bcz it is repeating decimal

it is non terminating number 11.333333333....
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3 years ago
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Events a, b, and c in a sample space have p(a)=0.2, p(b)=0.4, and p(c)=0.1. find p(a ∪ b ∪
Julli [10]
If A and B are mutually independent, then \mathbb P(A\cup B)=\mathbb P(A)+\mathbb P(B) and \mathbb P(A\cap B)=0.

If A and C are independent, then \mathbb P(A\cap C)=\mathbb P(A)\cdot\mathbb P(C). Ditto for B and C.

The inclusion/exclusion principle says that

\mathbb P(A\cup B\cup C)=\mathbb P(A)+\mathbb P(B)+\mathbb P(C)-\mathbb P(A\cap B)-\mathbb P(A\cap C)-\mathbb P(B\cap C)+\mathbb P(A\cap B\cap C)

Since A and B are mutually exclusive, their intersection is the empty set. It then follows that A\cap B\cap C also is the empty set, so the last probability is also 0.

Plug in what we know:

\mathbb P(A\cup B\cup C)=0.2+0.4+0.1-0-0.2\cdot0.1-0.4\cdot0.1+0

\implies\mathbb P(A\cup B\cup C)=0.64
3 0
3 years ago
4x+12=-7y<br> -y+12=4x<br><br> PLS HELP!!!!<br> Addition/ Elimination method
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4×+7y=-12 __ -4x-y=-12 ________ 0x+6y=-24 , so you eleminated by it self 6y/6=-24/6 , you get : y=-4 and then you plug in 4x+7(-4)=-12 , that's your answer 4x-28 =-12 , you divided in both side 4x=-12+28 , 4x=16 , and then x=16/4 =4 , so x=4
3 0
3 years ago
In triangle NOP, Np is extended through Point P to Point Q, m &lt; NOP =(x+17) degrees, m&lt; PNO =(2x-4) degrees, and m&lt; OPQ
Zigmanuir [339]
To find the measure of angle OPQ, we have two equations...
y+5x-17=180 because angles OPN and OPQ are supplementary...
AND
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The equations...
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x=15
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Since we wanted to solve for y, 122 is the answer.
The measure of angle OPQ is 122.

Sorry this took forever. The website is hard to use because I'm used to using the app:)

Best of wishes!

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3 years ago
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