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Vikentia [17]
3 years ago
8

Solve x4 − 7x2 − 18 = 0

Mathematics
2 answers:
babunello [35]3 years ago
5 0
Thw answer is X = 3 or -3
Andrew [12]3 years ago
3 0

Answer:

the answer is ​

x=±3,±√​2

​

​​ ı

Step-by-step explanation:

(x​^2−9)(x​2+2)=0

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If an exterior angle of a regular polygon measures 40°, how many sides does the polygon have?
nataly862011 [7]
The sum of all exterior angles is always 360 degrees.
360/40=9 sides

the polygon has 9 sides.
8 0
3 years ago
Convert to the nearest tenth.
Finger [1]
1. 27.3 2.4.8 3.11.4 4.10.9
8 0
3 years ago
Read 2 more answers
PLEASE HELP ILL GIVE BRAINLIESTTTT :)
Taya2010 [7]

Answer:

Yes, these triangles are congruent

∠E≅∠M

Step-by-step explanation:

Yes, these triangles are similar.

<em>Proof:</em>

Each side in LNM is 1\frac{2}{3} times longer than the sides in GFE

30/18 = 1\frac{2}{3}

25/15=1\frac{2}{3}

20/12 = 1\frac{2}{3}

According CPCTC (corresponding parts of congruent triangles are congruent), angle E is similar to angle M.

Hope this helps :)

Have a good day!

4 0
2 years ago
Giving 100 points and giving brainlest
Greeley [361]

Answer:

7

Step-by-step explanation: (dont trust me)

x^2 + (7)x +18

x(x + 4) + 3(x + 6)

8 0
2 years ago
Read 2 more answers
In our family there is five boys and one girl. What percent of the family is boys?
saw5 [17]

Answer:

83% are boys

Step-by-step explanation:

Im not sure if you have to round but you take the total number of family members (6) and divide it by how many boys (5) which would be 0.8333333 which you can round to either 80 or 83

8 0
3 years ago
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