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3 years ago

WILL GIVE BRAINLIEST AND 30 POINTS!

Mathematics

1 answer:

Katena32 [7]3 years ago

6 0

Answer:

$2x\sqrt{10}-2x\sqrt 5$

Step-by-step explanation:

$\sqrt{5x} (\sqrt{8x^2}-2\sqrt{x})\\\mathrm{Multiply \: parentheses \: by \sqrt{5x}}\\=\sqrt{5x \times 8x^2}-2\sqrt{5x \times x}\\=x\sqrt {4\times 10 x}-2x\sqrt{5}\\=2x\sqrt{10}-2x\sqrt{5}$

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sammy [17]

Answer:

A) 0.2g

Step-by-step explanation:

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2 years ago

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Help me with this question please

mojhsa [17]

Step-by-step explanation:

so, he will not wear any pants ? socks ? not to mention underwear ?

anyway, we have to deduct the $35 for the shoes, as he is seemingly buying them in any case.

so, we are left with 100 - 35 = $65 for shirts.

as one shirt costs $15, we need to see how often 15 fits into 65, as that is the answer how many shirts he can buy for this money.

65 / 15 = 4.333333333...

since he cannot buy a part shirt, we can only rely on the integer part of the calculation.

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2 years ago

Can someone help me please?

Soloha48 [4]

Answer

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Step-by-step explanation:

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3 years ago

I Have 10 Minutes Hurry for Brainlist and pls be accurate

yulyashka [42]

To find the equation we will put the values of x and y in the equations and then check if LHS=RHS.

$\large\red{\sf{y=3x-1}}$

$\begin{gathered}\\ \sf\longmapsto 9=3(1)-1\end{gathered}$

$\begin{gathered}\\ \sf\longmapsto 9=3-1\end{gathered}$

$\begin{gathered}\\ \sf\longmapsto 9≠2 \end{gathered}$

$\large\green{\sf{y=5x+4}}$

$\begin{gathered}\\ \sf\longmapsto 9=5(1)+4\end{gathered}$

$\begin{gathered}\\ \sf\longmapsto 9=5+4\end{gathered}$

$\begin{gathered}\\ \sf\longmapsto 9=9\end{gathered}$

$\large\blue{\sf{y=-2x-8}}$

$\begin{gathered}\\ \sf\longmapsto 9=-2(1)-8\end{gathered}$

$\begin{gathered}\\ \sf\longmapsto 9=-2-8\end{gathered}$

$\begin{gathered}\\ \sf\longmapsto 9≠10\end{gathered}$

$\large\pink{\sf{y=6x-8}}$

$\begin{gathered}\\ \sf\longmapsto 9=6(1)-8\end{gathered}$

$\begin{gathered}\\ \sf\longmapsto 9=6-8\end{gathered}$

$\begin{gathered}\\ \sf\longmapsto 9≠-2\end{gathered}$

Hence, Option B. y=5x+4 satisfies the system (1,9)

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2 years ago

What is the value of x in 9/5 x = 2/3

Anna [14]

Answer:

x = 10/27

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Step-by-step explanation:

Step 1: Define equation

9/5x = 2/3

Step 2: Solve for x

Divide both sides by 9/5: x = 10/27

Step 3: Check

Plug in x to verify it's a solution.

Substitute: 9/5(10/27) = 2/3
Multiply: 90/135 = 2/3
Simplify: 2/3 = 2/3

And we have our final answer!

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