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Art [367]
3 years ago
9

Can somebody please help.

Mathematics
1 answer:
ella [17]3 years ago
6 0

Answer:

Step 1: Distributed - to 8 and a

Step 2: Combined like terms or 5a and a

Step 3: Added -1.5 to each side

Step 4: Subtracted 6a from both sides

Step 5: Divided -2 from both sides

Step-by-step explanation:

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What formula should be used when factoring the expressionn x^3+27
kobusy [5.1K]

x³ + 27 which can be written as x³ + 3³

It is in the form of a³ + b³ = ( a + b) ( a² - ab + b²)

so

x³ + 3³

= (x+ 3) (x² - x * 3 + 3²)

= ( x + 3 ) ( x² - 3x + 9)

Hope this helps you.

5 0
3 years ago
A 50% sucrose solution lost 255 mL by evaporation. After evaporation what is the sucrose concentration in the remaining 300 mL?
Len [333]

Answer: 92.50%

From the given problem, we can say that the total volume of the concentration is:

255\text{ mL}+300\text{ mL}=555\text{ mL}

The initial volume of the solution is 555 mL. After the evaporation, the 50% sucrose solution lost 255 mL.

To find the concentration of the remaining 300 mL, we will use the following formula:

C_1V_1=C_2V_2

Where:

C₁ = initial concentration

C₂ = final concentration

V₁ = initial volume

V₂ = final volume

From the given, we know that:

C₁ = 50% = 0.50

C₂ = ?

V₁ = 555 mL

V₂ = 300 mL

Substitute these to the formula and we will get:

\begin{gathered} C_{1}V_{1}=C_{2}V_{2} \\ (0.50)(555)=C_2(300) \\ C_2=\frac{(0.50)(555)}{(300)} \\ C_2=0.925=92.50\% \end{gathered}

Therefore, we can say that the sucrose concentration in the remaining 300mL is 92.50%

5 0
2 years ago
What is 71.2×0.58 = ?
Elden [556K]

Answer: 41.296

Step-by-step explanation:

Simply type 71.2*0.58 into a calculator for the answer.  If you want to know how to multiply with decimals, just comment and I'll explain.

Hope it helps <3

7 0
4 years ago
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lord [1]

Answer:

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4 0
2 years ago
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Help me help me help me help me help me help me help me
Neko [114]

Answer:

C. and A.

Step-by-step explanation:

1/6 is a positive number so that is automatically greater than -0.33 and 0.3 is  It's like, the bigger the number next to the negative sign, the MORE NEGATIVE it is, making it SMALLER.

Reward for answering question correctly:

So am I gonna get brainliest?

4 0
3 years ago
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