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boyakko [2]
3 years ago
15

98n^2-200 factoring special cases

Mathematics
1 answer:
Kipish [7]3 years ago
8 0

Step-by-step explanation:

Factor 98n2−200

98n2−200

=2(7n+10)(7n−10)

Answer:

2(7n+10)(7n−10)

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2w^2-11w=-12 <br> a w=3/2 or 4<br> b w=1 or 12<br> c w=1 or 7<br> d w = 2.5 or 6
dlinn [17]
Hey mate !!
Here's your answer !!


2w^2 - 11w = -12
2w^2 -11w + 12 = 0
2w^2 - 8w - 3w + 12 = 0

2w ( w - 4) -3 ( w - 4) = 0
(2w - 3) ( w - 4) = 0

Hence

2w - 3 = 0
2w = 3
w = 3/2

w - 4 = 0
w = 4

Hence value of w are 4 and 3/2

Hope this helps!!
Cheers!!
7 0
4 years ago
Describe fully the single transformation that maps triangle A onto triangle B
Tomtit [17]

Answer:

reflection

Step-by-step explanation:

its a reflection across the y axis

5 0
3 years ago
Does anyone know how to solve this problem!?
Sunny_sXe [5.5K]

Answer:

D.

Step-by-step explanation:

329/8=41.125 you divide by 8 because its equivalent to 8 smaller units.

Then: 41.125 x 724=approx. 30,000

3 0
3 years ago
Four times the sum of 8 and some number is 4. What is the number?
Lunna [17]

Answer:

\Huge \boxed{\mathrm{-7}}

\rule[225]{225}{2}

Step-by-step explanation:

Let the number be x.

4(x+8)=4

Dividing both sides by 4,

x+8=1

Subtracting 8 from both sides,

x=-7

The number is -7.

\rule[225]{225}{2}

3 0
3 years ago
Read 2 more answers
A man bought 42 stamps, some 13¢ and some 18¢. How many of each kind did he buy if the cost was $6.66?
OverLord2011 [107]
Let's call the 13¢ stamps a and the 18¢ stamps b: a+b = 42 and therefore a= 42-b (formula 1) 0.13a+0.18b= 6.66 In this formula, substitute the value of a according to formula 1: 0.13(42-b)+0.18b= 6.66 Multiply on the left to get rid of the parenthesis: 5.46-0.13b+0.18b= 6.66 Subtract 5.46 from both sides: -0.13b+0.18b= 1.20 Add on the left: 0.05b= 1.20 Divide both sides by 0.05 b= 24 You have 24 18¢ stamps and: 42-24= 18 13¢ stamps Check: (24 x 0.18) + (18 x 0.13)= 6.66 Correct.
5 0
3 years ago
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