3 years ago

Please someone do this ♡♡♡♡♡ I'll give you brainlist

Mathematics

1 answer:

mezya [45]3 years ago

6 0

Answer:

720 degrees

Step-by-step explanation:

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Which of the following is a solution of x2 + 4x = −8?

Vladimir [108]

$x^{2}+4x = -8
\\\\
x^{2}+4x+8 = 0
\\\\
\Delta = b^{2}-4ac
\\\\
\Delta = (4)^{2}-4 \cdot (1) \cdot (8)
\\\\
\Delta = 16-32
\\\\
\Delta = -16$

There's no solution in the set of real numbers.

$\boxed{S = \{ \ \ \}}$

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3 years ago

Pleeeease help me! True or false

zloy xaker [14]

False, since it we substitute x = 4 into the equation we get y = -4 + 3 = -1

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3 years ago

if 28 students out of 35 in our class enjoy using electronics in their spare time, how many would you expect out of the 300stude

max2010maxim [7]

Answer:

240 students

Step-by-step explanation:

28/35=x/300

cross multiply to get 35x=300*28

divide both sides by 35 to get 240

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2 years ago

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What is the square root of the number 100?

Gennadij [26K]

Answer:

Step-by-step explanation:

The square root of the number 100 is 10.

I hope it helps! Have a great day!

Anygays-

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What is 4 9/29 + 6 5/58 ?

prisoha [69]

Answer:

it 10 23/58

Step-by-step explanation:

i need to learn more and pay attention

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3 years ago

Please someone do this ♡♡♡♡♡ I'll give you brainlist​

Please someone do this ♡♡♡♡♡ I'll give you brainlist