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Ainat [17]
3 years ago
7

Factorise then following X^2-3x+2

Mathematics
1 answer:
vfiekz [6]3 years ago
4 0
(X-2)(X-1)

To do this, first you want to notice that there is no number in front of the x^2.
This will not work on its own if there is

Find 2 numbers that multiply to 2 and add to -3
-3 is in front of the x and 2 is alone in the equation so those are the numbers you are using

-2 and -1 are the only whole numbers that do that
-2 + -1 = -3
-2 * -1 = 2
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A scale drawing of a rectangular park is 5 inches wide and 7 inches long. The actual park length is 280 yards. What is the width
Anastaziya [24]

Answer:

56,000

Step-by-step explanation:

7 inches → 280 yards

1 inch → 280 ÷ 7 = 40 yards

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3 0
3 years ago
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Can someone explain this?
Cerrena [4.2K]
<h2>Hello!</h2>

The answer is:

The missing step is the step shown in the last option:

D. 324=0.042x+16

<h2>Why?</h2>

To find which is the missing step, we need to remember that to cancel a square root, we need to elevate it, so:

Starting from the last step before the missing step, we have:

-18=-\sqrt{0.042x+16}

In order to calculate the value of the variable (x) we need to square both sides of the equation, since squaring a root will cancel the root.

We must remember the following properties:

\sqrt{a^{m} }=a^{\frac{m}{2}}\\\\(a^{b})^{c}=a^{b*c}

Now, finding the missing step, we need to find what to do in order to get the expression of the following step.

So, squaring both sides of the equation in order to cancel the square root and isolate the variable, we have:

-18=-\sqrt{0.042x+16}\\\\(-18)^{2} =(-\sqrt{0.042x+16})^{2} \\324=0.042x+16\\324-16=0.042x\\\\x=\frac{304}{0.042}=7333

Hence, we found the the missing step is:

D. 324=0.042x+16

Have a nice day!

4 0
3 years ago
What is the ratio and diameter of the following Circle 4.2 cm ​
gladu [14]

Answer:

<em>4/2 </em>is the ratio and the diameter is <em>2</em>

Step-by-step explanation:

<em>4/2 </em>is a fraction and <em>2 </em>is when you divide 4/2. Correct me if I am wrong.

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MrMuchimi

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Step-by-step explanation:

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4.3 Multiplying Binomials Question
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I think the answer to that is : 6x^2 - 41x - 56
But I’m not a 100% sure
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3 years ago
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