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White raven [17]
2 years ago
12

Answer three questions for 11 points

Mathematics
2 answers:
Ksenya-84 [330]2 years ago
8 0
3. A 2.b 1.a i think if this is correct then I hope this helps
Gnesinka [82]2 years ago
8 0
1. Since dazzling is 9 times brighter than radiant, and radiant is 9 times brighter than illuminated, them dazzling is (9*9=81) 81 times brighter than illuminated
Answer=81 times

2.
To solve this we first have to put the mixed numbers in decimal form.
2 5/8=2.625
2 2/3=2.66666666 

So now that they are all in decimal form, its easier to see that A is the answer that correctly places them in order for least to greatest.
Answer=A

3.For the coldest temperature, we need to find the lowest number. -20 is the lowest number given, therefore it is the coldest temperature.
Answer=C
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How do I subtract 4m^2 + 2mn + 8n^2 from 2m^2 + 6mn + 2n^2 ?
SVETLANKA909090 [29]
-2m^2+4mn-6n^2

1) Let's write out both expressions subtracting 4m²+2mn+8n² from 2m²+6mn+2n²

\begin{gathered} 2m^{2}+6mn+2n^{2}-(4m^{2}+2mn+8n^2)_{} \\ 2m^2+6mn+2n^2-4m^2-2mn-8n^2 \\ -2m^2+4mn-6n^2 \end{gathered}

2) Note that when we subtract 4m^2 + 2mn + 8n^2 from 2m^2 + 6mn + 2n^2 we need to swap the sign by placing -1 outside the parentheses and then combine like terms adding those terms algebraically.

4 0
1 year ago
Please help quickly this is timed
liberstina [14]

Answer:

the one you have selected is correct

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Your friend Mel says he has an easier way to solve this problem. Here are the first steps in his method.
damaskus [11]

Simplifying

2x2 + 6x + 4 = 24

Reorder the terms:

4 + 6x + 2x2 = 24

Solving

4 + 6x + 2x2 = 24

Solving for variable 'x'.

Reorder the terms:

4 + -24 + 6x + 2x2 = 24 + -24

Combine like terms: 4 + -24 = -20

-20 + 6x + 2x2 = 24 + -24

Combine like terms: 24 + -24 = 0

-20 + 6x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.

2(-10 + 3x + x2) = 0

Factor a trinomial.

2((-5 + -1x)(2 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve:

Simplifying

-5 + -1x = 0

Solving

-5 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '5' to each side of the equation.

-5 + 5 + -1x = 0 + 5

Combine like terms: -5 + 5 = 0

0 + -1x = 0 + 5

-1x = 0 + 5

Combine like terms: 0 + 5 = 5

-1x = 5

Divide each side by '-1'.

x = -5

Simplifying

x = -5

4 0
3 years ago
Can someone please explain to me how "lines and intercepts" work? I am extremely confuzled :/ Please help
anastassius [24]

Answer in explanation

Step-by-step explanation:

for each row, the y- coordinate of the point where the line crosses the x- axis is zero. The point where the line crosses the x- axis has the form (a,0) ; and is called the x-intercept of the line. The x- intercept occurs when y is zero. Now, let's look at the points where these lines cross the y-axis

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Pls help me math work
Murljashka [212]

Answer:

Area= 105.12 feet squared

7 0
3 years ago
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