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sergiy2304 [10]
3 years ago
8

Someone plz explain!

Mathematics
1 answer:
ryzh [129]3 years ago
7 0

Answer:

18° and 72°

Step-by-step explanation:

Complimentary angles form 90°

We have an angle (x) 4 times larger than the other (y).

Well actually, a system of equations isn't required, so forget about x and y, just divide 90 by 5. This gives you 18, one of the angle's measurements is 18°. Multiply 18 by 4 and get 72. The other angle's measurement is 72°.

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blagie [28]
Since 1 cm = 10 mm
Then 4 cm = 40 mm
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Round .1325 to nearest thousandths
m_a_m_a [10]
So,

If the number in the ten-thousandth's place is greater than or equal to 5, then round up.  If not, round down.

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4 0
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40x=10x^2+41 <br><br> Identify the number of solutions and their types using the discriminant
nydimaria [60]

Number of solutions: no roots

Type of solution: Not Real

Step-by-step explanation:

We need to identify the number of solutions and their types using the discriminant.

We are given: 40x=10x^2+41\\

Rearranging:

40x-10x^2-41=0\\10x^2-40x+41=0

Discriminant can be found by: b^2-4ac

where b=-40, a=10 and c=41

Putting values:

b^2-4ac\\=(-40)^2-4(10)(41)\\=1600-1640\\=-40\\

So, Discriminant is -40

If the discriminant is less than zero i.e -40 then there are no real roots.

So, Number of solutions: no roots

Type of solution: Not Real

Keywords: discriminant

Learn more about discriminant at:

  • brainly.com/question/8196933
  • brainly.com/question/9328925
  • brainly.com/question/9184197

#learnwithBrainly

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3 years ago
What is negative 13/7 minus negative 5/7 as a fraction
Nimfa-mama [501]

Answer:

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Step-by-step explanation:

13-7. 8

--------- = --

7

7

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