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ch4aika [34]
3 years ago
9

Need help with theses questions please

Mathematics
1 answer:
Olin [163]3 years ago
7 0
Hello:
3x²+5x+2=0
delta = (5)²-4(3)(2)=1
x =( -5 <span>±1)/6
x= -2/3 or x=-1

t4-81=(t²)² -9² = (t²-9)(t²+9) =(t-3)(t+3)(t²+9)....(answer B)</span>
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MATH HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! PLEASE reposting cause no one answered them
sveta [45]

A

since the 3 is outside the radical then \sqrt{9} = 3, hence

x = 9

B

using the law of radicals

\sqrt{a} × \sqrt{b} = \sqrt{ab}

we can separate the factors as

\sqrt{24} × √x^{10} × √y^{5}

= 2\sqrt{6} x^{5}y^{5/2}

C

\sqrt{121} + \sqrt{50} = 11 + 5\sqrt{2}

D

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6 0
3 years ago
Can anybody give me the answers to these questions
zhannawk [14.2K]

Answer:

830 cents

5n + p

Step-by-step explanation:

Given that :

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Number of pennies = 130

Total coins :

140 nickels + 130 pennies

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1 penny = 1 cent

Hence,

140(5) + 130(1)

700 + 130

= 830 cents in total

If :

number of nickels = n

Number of pennies = p

Tot coins :

5n + 1p

5n + p

6 0
3 years ago
These two triangles are similar. What are a and b? Note: the two figures are not drawn to scale. Please help with this!
borishaifa [10]

Answer:

A.36 inches B.150 inches

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4 0
3 years ago
(7^4)(7^2) = A) 7^6 B) 7^8 C) 14^6 D) 14^8
jonny [76]

Answer:

A

Step-by-step explanation:

using the rule of exponents

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3 years ago
How do you find if a graph is linear
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To find out of a graph is linear you have to use the vertical line test.
3 0
3 years ago
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