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3 years ago

The value of y when x equals 10. 5x-y=54

Mathematics

2 answers:

Studentka2010 [4]3 years ago

6 0

5(10)-y=54
50-y=54
-y=54-50
-y=4
y=4/-1
y=-4

hope its help you

Alex777 [14]3 years ago

3 0

X=y/5+54/5 hope it helps

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A used bookstore sells hardback books and paperback books.A hardback book costs $11, including tax.A paperback book costs $5, in

Ket [755]

Answer:

D.5

Step-by-step explanation:

You can write the following equations from the information given:

y=x+3 (1)

11x+5y=47 (2)

x is the number of hardback books

y is the number of paperback books

You can replace (1) in (2):

11x+5(x+3)=47

11x+5x+15=47

16x=47-15

16x=32

x=32/16

x=2

Then, you can replace the value of x in (1) to find the value of y:

y=2+3

y=5

According to this, the answer is that Jamal bought 5 paperback books.

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3 years ago

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Pachacha [2.7K]

To get a decimal form of a fraction, divide the numerator by the denominator.
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3 years ago

I need these answers by 1:30

hodyreva [135]

Answer:

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Step-by-step explanation:

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Ilya [14]

Answer:

13.8

Step-by-step explanation:

Recall the trigonometric ratios

Sine = Opposite over Hypotenuse (SOH)

Cosine = Adjacent over Hypotenuse (CAH)

Tangent = Opposite over Adjacent (TOA)

Now lets look back at the question

We are given an angle and its adjacent side length (11) and we need to find the hypotenuse

The hypotenuse and adjacent sides corresponds with the trig function cosine so we will use cosine to solve for x

( remember that cosine = adjacent over hypotenuse )

$cos(37)=\frac{11}{x}$

step 1 multiply each side by x

$cos(37)*x=xcos(37)\\\frac{11}{x} *x=11$

now we have $xcos(37)=11$

step 2 divide each side by cos(37)

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we're left with x = 13.77439

Our last step would be to round to the nearest tenth

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3 years ago

Read 2 more answers

What is the unit rate of $2.98

Semenov [28]

Answer:

Step-by-step explanation:

The existence of a unit rate implies that you have TWO variables. Here you list only one: $.

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$2.98

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3 years ago