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3 years ago

What is equivalent to square root of 8

Mathematics

1 answer:

vredina [299]3 years ago

8 0

Answer:

2 radical 2

Step-by-step explanation:

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The sum of two numbers is 70. One number is 10 more the twice the other number.

GalinKa [24]

Answer:

20 and 50

Step-by-step explanation:

x + y = 70

y = 2x + 10

Use the substitution method:

y = 70 - x

y = 2x + 10

70 - x = 2x + 10

3x = 60

x = 20

x + y = 70

20 + y = 70

y = 50

x = 20

y = 50

4 0

3 years ago

35 lbs of apples cost $420. How much would 6 lbs cost?

Ymorist [56]

Answer:

$72

Step-by-step explanation:

one lb costs $12 so just multiply it by 6

3 0

3 years ago

Read 2 more answers

Is this correct? formula is displayed on image:

Len [333]

Answer:

no it should bee

$\tan( \alpha ) = \frac{15}{8}$

7 0

2 years ago

Read 2 more answers

OOOO

lbvjy [14]

Step-by-step explanation:

Given bi-quadratic equation is:

$x^4+95x^2 -500=0$

Substituting $x^2=a,$ given bi-quadratic equation reduces in the form of following quadratic equation:

$a^2 +95a -500=0\\$

Let us factorize the above quadratic equation:

$a^2 +95a -500=0\\\therefore\: a^2 +100a -5a-500=0\\\therefore\: a(a +100) -5(a+100)=0\\\therefore\: (a +100)(a -5)=0\\\therefore\: (a +100)=0\:\: or \:\: (a -5)=0\\\therefore\: a = - 100\:\: or \:\: a = 5\\\\CASE\: (1)\:\\When\: a = - 100 \implies x^2 = - 100\\\therefore x=\pm \sqrt{-100}\\$