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3 years ago

Help me solve 34 please

Mathematics

1 answer:

allsm [11]3 years ago

5 0

I'm not to sure about my work, since I got the wrong answer, then plugged in until they were equal. So, I'm not adding it so no one is confused by it. (because it isn't right)

y=3, x=4.

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If REX ~ ROB, find the value of a.

Luba_88 [7]

Answer: 8

Step-by-step explanation:

As corresponding sides of similar triangles are proportional,

$\frac{RX}{RB}=\frac{XE}{BO}\\\\\frac{6}{15}=\frac{a}{20}\\\\a=20\left(\frac{6}{15} \right)=\boxed{8}$

3 0

1 year ago

consider the equation is Y equals 1/square root of x and y=x-2. approximate solution of the system equations

emmasim [6.3K]

Answer:

$x=1$ and $x=4$

Step-by-step explanation:

We have the following system of equations:

$y=\sqrt{x}$ and $y=x-2$

To solve the problem, we need to equal the two equations:

$x-2=\sqrt{x}$ ⇒ $(x-2)^{2} =x$ ⇒ $x^{2} -4x + 4 = x$

⇒ $x^{2} -5x + 4 = 0$

So you need to find two numbers that added equal to 5 and multiplied equal to 4. These two numbers are $x=-1$ and $x=-4$ .

Then, the factorized form of the polynomial is: $(x-1)(x-4)$ .

The, the solution to the system of equations is: $x=1$ and $x=4$ .

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2 years ago

Juma earns $12.50 for each newspaper

Ulleksa [173]

400=12.50x+50

400-50=12.50x
350=12.50x
350÷12.50=x
28=x

he would have to sell 28 news paper subscriptions

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2 years ago

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Taya2010 [7]

Answer:

Step-by-step explanation:

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The rate of 225 mi in 7 hr written as a unit rate

mel-nik [20]

Answer:

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Step-by-step explanation:

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