3 years ago

Neighborhood block:

Mathematics

2 answers:

Andreyy893 years ago

8 0

60 I think sorry if it's wronge

Fofino [41]3 years ago

3 0

Answer:I think um.....60?divied something

Step-by-step explanation:Sorry I don't really know But I will look it up and tell u the answer....

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Write a expression that is equivalent of 4+3(5+x)

Serggg [28]

Answer:19+3x

Step-by-step explanation:

4+3(5+x)

Open bracket

4+15+3x

19+3x

3 0

4 years ago

Limited time . 10 points

AfilCa [17]

Answer:

Therefore the value of x is

$x=1\pm\sqrt{19}i$

Step-by-step explanation:

Given:

$x^{2}+20=2x$ which is

$x^{2}-2x+20=0$

To Find:

x = ? using Quadratic Formula

Solution:

For a Quadratic Equation ax² + bx + c = 0 , Formula Method is given as

$x=\dfrac{-b\pm\sqrt{b^{2}-4ac}}{2a}$

On Comparing with above we get

$a=1\\b=-2\\c=20$

Substituting a , b , c in Formula method we get

$x=\dfrac{-(-2)\pm\sqrt{(-2)^{2}-4(1)(20)}}{2\times 1}\\\\x=\dfrac{2\pm\sqrt{-76}}{2}\\\\x=\dfrac{2\pm2\sqrt{19}i}{2}\\Dividing\ by\ 2\ we\ get\\\\x=1 \pm\sqrt{19}i$

Therefore the value of x is

$x=1\pm\sqrt{19}i$

8 0

4 years ago

If I did 2 tests a month for four months how many would I get done a month how many would I get done in four months.

AfilCa [17]

Answer: 2 per month

8 per four months

Step-by-step explanation:

6 0

4 years ago

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The cruising speed of a 747 airplane is approximately 9,944 inches per second. What is this speed to the nearest foot per second

NemiM [27]

828.6 repeating (or 829 rounded up) feet per second.

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4 years ago

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Which expresstion is equivalent to 22 - 3

amid [387]

22+(-3)
first one.
u take out the adding sign and convert it to minus so it’s 19.

3 0

2 years ago