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Vlad [161]
3 years ago
15

Will mark brainest help please !!!

Mathematics
1 answer:
amm18123 years ago
7 0

8) red and 1, red and 2, red and 3, blue and 1, blue and 2, blue and 3

So answer is 6

9) 0.5*1/3 = 0.17

10) 0.5*2/3 = 0.33

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Punctele O, A, B, C sunt coliniare în această ordine, iar segmentele OA, AB și BC au lungimile exprimate în cm, prin numere natu
julia-pushkina [17]

Răspuns:

a) OC = 18cm

b) MN = 6cm

Explicație pas cu pas:

Găsiți diagrama la întrebarea atașată.

a) Din diagramă se poate observa că OC = OA + AB + AC

OC = 2n + 2n + 2 + 2n + 4

OC = 6n + 6

Următorul este să obțineți valoarea lui n:

OM = OA + AM

Să obținem segmentul AM;

Deoarece M este segmentul mijlociu al AC, atunci;

AM = AC / 2

AM = AB + BC / 2

AM = 2n + 2 + 2n + 4/2

AM = 4n + 6/2

AM = 2n + 3

Din moment ce OM = OA + AM

OM = 2n + 2n + 3

OM = 4n + 3

Dat fiind OM = 11

11 = 4n + 3

4n = 11-3

4n = 8

n = 2

Următorul pas este să calculați OC;

OC = 6n + 6

OC = 6 (2) + 6

OC = 18

Prin urmare, lungimea segmentului OC este de 18 cm

b) Această întrebare ne cere să găsim segmentul de linie MN.

Din diagramă, MN = AM - AN

Deoarece AM = 2n + 3 din întrebarea 1;

AM = 2 (2) +3

AM = 4 + 3

AM = 7

Acum, să obținem AN:

Din diagramă, AN = ON-OA și ON = OB / 2

AN = OB / 2 - OA

AN = (2n + 2n + 2) / 2 - 2n

AN = 4n + 2/2 - 2n

AN = 2n + 1 - 2n

AN = 2n-2n + 1

AN = 1

De la MN = AM - AN

MN = 7 - 1

MN = 6cm

Prin urmare, distanța dintre N, mijlocul segmentului OB și punctul M este de 6cm

6 0
3 years ago
Solve for x :<br><br>14x + 2 = 9x - 3​
exis [7]
The answer for your question is x=-1

8 0
2 years ago
How to turn 3/9 in to a decimal ? no calculator
Lady_Fox [76]
3/9 reduces to 1/3 (divide both parts by the GCF 3)

Then use long division to divide 1/3

See attached of what I mean

Which is why \frac{1}{3} \approx 0.3333

The '3's in 0.333 will go on forever

7 0
2 years ago
Ms. De Leon wants to produce different sets of test questions for her essay test. If she plans to do this by putting together 3
gladu [14]
The correct answer is b
5 0
2 years ago
An employee’s salary for Alar Services is $37,500. Next year, she will get an 8% increase in salary. How much is her new salary?
Gnom [1K]
40500 is the answer
Hope this helps
7 0
2 years ago
Read 2 more answers
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