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Masteriza [31]
3 years ago
15

Equation of elimination method 4a+b=28 a+4b=-8

Mathematics
1 answer:
Vilka [71]3 years ago
6 0
Download an app called Photomath then it will answer it for you with work and explaining
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In calm water, the motorboat of Jana is moving at the speed of 16.5km/h. On a river, because of the current, the boat moves fast
ki77a [65]

Answer: 707 km/h

Step-by-step explanation:

let c = speed of current

16.5 + c = speed of sailboat downstream

16.5 - c = speed of sailboat upstream

distance = travel time * speed

﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋

2(16.5 + c) = 5(16.5 - c)

33 + 2c = 82.5 - 5c

7c = 49.5

c = 7.07 km/h

4 0
1 year ago
(F+g)(6) (<br> f+g) 7x+8
pashok25 [27]
I am honestly not sure about this answer... try Khan Academy. Or, try breaking it down into steps.

I hope this helped... sorry about that. I will try this concept soon. :)
6 0
3 years ago
What is the answer???
Lapatulllka [165]
Is either I’m blind and can’t see or the letter are way too small
5 0
3 years ago
Write 28,703 in expanded form
nekit [7.7K]
That would be twenty-eight thousand, seven hundred and three.
Hope that helped :)
6 0
3 years ago
Read 2 more answers
The pyramid below has a square base.
zavuch27 [327]

The volume of the pyramid would be 2406.16 cubic cm.

<h3>How to find the volume of a square-based right pyramid?</h3>

Supposing that:

The length of the sides of the square base of the pyramid has = b units

The height of the considered square-based pyramid = h units,

The pyramid below has a square base.

h = 24.4 cm

b = 17.2 cm

Then, its volume is given by:

V = \dfrac{1}{3} \times b^2 \times h \: \rm unit^3

V = \dfrac{1}{3} \times 17.2^2 \times 24.4 \: \rm unit^3\\\\V = 2406.16

Therefore, the volume of the pyramid would be 2406.16 cubic cm.

Learn more about pyramid;

brainly.com/question/20324485

#SPJ1

3 0
2 years ago
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