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2 years ago

Given that 5x:8 = 7:2 Calculate the value of x.

Mathematics

2 answers:

OLEGan [10]2 years ago

5 0

Answer:

$x = 5.6$

Step-by-step explanation:

$5x : 8 = 7 : 2 \\ \frac{5x}{8} = \frac{7}{2} \\ \\ cross \: \: multiple \\ 10x = 8 \times 7 \\ 10x = 56 \\ \frac{10x}{10} = \frac{56}{10} \\ x = 5.6$

PolarNik [594]2 years ago

3 0

Answer:

x = 28/5 = 5.600

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murzikaleks [220]

Answer:

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Step-by-step explanation:

5x+8=3x

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2 years ago

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Leno4ka [110]

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2 years ago

Use a system of equations to solve this problem.Bronze is a mix, or alloy, of tin and copper. A metal worker needs 100 g of bron

d1i1m1o1n [39]

Answer:

x = 50 grs

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Step-by-step explanation:

" x " is quantity of bronze of 5% tin

" y " is quantity of bronze of 45% tin

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The mathematical expression for the 100 grs condition is:

x + y = 100

And the The mathematical expression for the % condition is:

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The system is:

x + y = 100

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Solving this system we get values of x and y

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2 years ago

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borishaifa [10]

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3 years ago