2 years ago

I need help with the last two

Mathematics

1 answer:

Luba_88 [7]2 years ago

3 0

.07 is what I believe the answer is

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Max points :)) 33 please help no explanation needed..

Xelga [282]

5(2y-4) - 3y = 1. 10y-20-3y=1. 7y-20=1. 7y=21. y =3. x = 2(3)-4. x = 2. x*y =6.

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2 years ago

Read 2 more answers

If the ratio of y to x is equal to 3 and the sum of y and x is 80, what is value of y

Rus_ich [418]

Answer:

y = 60

Step-by-step explanation:

<h3>Step 1: Make sense of the given</h3>

"The ratio of y to x is 3"

This means that, $y\div x=3$

"The sum of y and x is 80"

This means, $x+y=80$

<h3>Step 2: Make use of the facts</h3>

If $y\div x=3$ , then $y = (3*x)$ .

We can plug this into the other equation by substitution:

$x + (3 * x)=80$

This simplifies to:

$4x = 80$

Which we can solve out and get:
$x=20$ .

We solved for x, but we need the value of y.

So, we go back to the equation we first derived: " $y = (3*x)$ ".

And now we substitute the value of x, into this.

$y = (3 * (20))$

By solving this out, we get:
$y=60$

So, the value of y is 60.

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1 year ago

3(n-4) what is the verbal expression?

gulaghasi [49]

Three times the difference of a number and four.
or
Three times the quantity of four less than a number n.

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2 years ago

Express this to the nearest whole .

RSB [31]

Answer:

its 30 the a in thst problem is silents

Step-by-step explanation:

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2 years ago

9. (10x2 + 99x – 5) ÷ (x + 10) =

Goryan [66]

Answer:

4045.10

Step-by-step explanation:

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2 years ago