2 years ago

Which system of equation is equivelent to the following system? 3x+5y=26 x+4y=16

Mathematics

2 answers:

nasty-shy [4]2 years ago

8 0

yuuuuhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

docker41 [41]2 years ago

8 0

Soo I really dk want the answer I’m so sorry but yea andbdnennskd

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Work out the answers to: a) 8.2 x 13 b) 0.8 x 5.7 What’s the answer?

Assoli18 [71]

A.) 106.6
B.) 4.56
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3 years ago

A composite figure is divided into two congruent trapezoids, each with a height of 4 cm.

lidiya [134]

Answer:

The area of this composite figure is $64\ cm^{2}$

Step-by-step explanation:

we know that

If the composite figure is divided into two congruent trapezoids, then the area of the composite figure is equal to the area of one trapezoid multiplied by two

The area of the composite figure is

$A=2[\frac{1}{2}(b1+b2)h]$

$A=(b1+b2)h$

substitute the values

$A=(6+10)4$

$A=64\ cm^{2}$

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3 years ago

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3 years ago

What is the solution to this system of linear equations?

LekaFEV [45]

Answer:

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Step-by-step explanation:

(-1,3)

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3 years ago

When Klorina swims with the current, she swims 10 km in 2 h. Against the current, she can swim only 8 km in the same time. How f

nasty-shy [4]

Answer:

Klorina's rate in still water is 4.5 km/h

Current's rate is 0.5 km/h

Step-by-step explanation:

Let

x km/h = Klorina's rate in still water

y km/h = current's rate

With the current (current helps):

Distance = 10 km

Time = 2 hours

Rate = x + y km/h

$10=2(x+y)$

Against the current:

Distance = 8 km

Time = 2 hours

Rate = x - y km/h

$8=2(x-y)$

Divide both equations by 2:

$x+y=5\\ \\x-y=4$

Add these equations:

$x+y+x-y=5+4\\ \\2x=9\\ \\x=4.5\ km/h$

Subtract these two equations:

$(x+y)-(x-y)=5-4\\ \\x+y-x+y=1\\ \\2y=1\\ \\y=0.5\ km/h$

4 0

3 years ago