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Aleks04 [339]
4 years ago
14

Find positive integer x, if 1+2+3 +...+x=120.

Mathematics
1 answer:
Yakvenalex [24]4 years ago
3 0

Answer:

x = 15

Step-by-step explanation:

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 +13 + 14 + 15 = 120

The number x is a positive integer.

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Find X, thanks in advance
irina1246 [14]

Answer: 63

Step-by-step explanation:

X = 63

Its adjacent meaning they will add up to 180 degrees

4 0
3 years ago
Can someone please help me ASAP​
Sonja [21]

Answer:

x^2 + 5n = 4mx

=> x^2 - 4mx + 5n = 0

D=0 (since one root then roots are equal)

b^2-4ac = 0

(-4m)^2 - 4(1)(5n) = 0

16m^2 - 20n = 0

16m^2 = 20n

8m^2 = 10n

4m^2 = 5n

hope it helps.......

7 0
3 years ago
Arlene had 1/3 as many goldfish as Isabelle. Isabelle has 5 times as many goldfish as Bruce. If Bruce had 18 goldfish, how many
kvv77 [185]

Answer: 30 goldfish

Step-by-step explanation: Bruce has 18 goldfish. If Isabelle has 5 times as many goldfish as Bruce she will have 18*5=90 goldfish. If Arlene has 1/3 times as many goldfish as Isabelle she will have 90/3=30 goldfish.

7 0
3 years ago
Can you plz help me I don't understand this
Lana71 [14]
Add up all the rainfall amounts and divide by 11
6 0
3 years ago
Read 2 more answers
Solve for x. Round to the nearest tenth, if necessary.
DENIUS [597]

Answer:

x=3.5 cm

Step-by-step explanation:

90/2 = 45 degrees

Soh Cah Toa

We have opposite and hypotenuse making sin.

Length×Sin(Angle)

5×Sin(45) = 3.53553cm

Rounded the the nearest tenth makes 3.5cm

6 0
3 years ago
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