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jeka57 [31]
3 years ago
14

There's the 2nd part but I've already done that. I just need an answer or help with this.

Mathematics
1 answer:
guapka [62]3 years ago
5 0
I believe the answer is 644=200+12a
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One hose can fill a pool in 12 hours. another hose can fill the same pool in 8 h
just olya [345]
Answer: 4.8 hours

Explanation:

One hose can fill a pool in 12 hours.
The other house can fill the same pool in 8 hours.

If they fill the pool together, 
 \text {Time Needed } =  \cfrac{12 \times 8}{12 + 8} = 4.8 hours

3 0
3 years ago
Find H of the shape.
emmainna [20.7K]

Answer: 12

Step-by-step explanation: V of prism = S of triangle*Height of prism

height of prism is 30

S of triangle = a/2*<em>h</em>( a =18 cm)

3240=30*(18/2)*<em>h</em>

<em>h</em>=3240/(9*30)=12

7 0
2 years ago
Find the slope of the line that passes through the pair of points. (5.3, –2.5), (7.3, –12.5)
astra-53 [7]

Answer:

-5

Step-by-step explanation:

The slope of the line is found by

m = (y2-y1)/(x2-x1)

   = ( -12.5 - -2.5)/( 7.3 - 5.3)

    = ( -12.5 +2.5)/( 7.3 - 5.3)

    = -10 /2

    = -5

5 0
3 years ago
Which expression is equivalent to n(3+2n)?<br> a)2n²+3n+5<br> b)5n+5<br> c)2n+8<br> d)11n
denis23 [38]

Answer:

None of the above.

Step-by-step explanation:

n(3 + 2n)

Apply distributive property...

3n + 2n²

There are no extra numbers

5 0
3 years ago
Read 2 more answers
on the first play of a game , a football team gained 23 yards and then lost 10 yards due to penalty during the second play the t
zepelin [54]
-1 Let's say the set of downs starts at the 20 yard line (maybe the kicking team kicked deep, the receiving team took a knee and so play starts at the 20).
Ok - we're at the 20. First down - they advance 5 yards. So we're now at the 25. We can write that mathematically as:
20
+
5
=
25
So the second play they get sacked deep and lose 6 yards. So we subtract 6:
25
−
6
=
19
So what's the change in yardage for the 2 plays? We are on the 19 and started at the 20, so we can write:
19
−
20
=
−
1
and this makes sense because we know we advanced 5 and fell back 6
3 0
3 years ago
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