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3 years ago

2x-5=7 Find out what x is

Mathematics

2 answers:

adelina 88 [10]3 years ago

3 0

Answer:

x= 6

hope this help

have a great day

ICE Princess25 [194]3 years ago

3 0

Answer:

x=6

Step-by-step explanation:

2x-5=7

2x=12

x=6

Hope This Helps :)

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Can anyone help solve question3 the (ii) and the question2 match the following

Trava [24]

Answer:

i) (c)

ii) (d)

iii) (b)

iv) (a)

ii) 80°

Step-by-step explanation:

i) 2x+x+3x=180°

x=30°

ii) x+110=180

x=70

iii) x+2x+30°=180

x=50°

iv) 2x+15°+45°+x=180

3x+60°=180

x=40°

ii) 2x+5+25=180°

2x+30°=180°

x=75°

the measure: x+5°= 75°+5°=80°

3 0

3 years ago

The probability that a certain hockey team will win any given game is 0.3723 based on their 13 year win history of 385 wins out

Whitepunk [10]

Answer:

0.1505 = 15.05% probability that the hockey team wins 6 games in November

Step-by-step explanation:

For each game, there are only two possible outcomes. Either the team wins, or it does not. The probability of winning a game is independent of winning other games. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

The probability that a certain hockey team will win any given game is 0.3723

So $p = 0.3723$

12 games in November

So $n = 12$

What is the probability that the hockey team wins 6 games in November?

This is $P(X = 6)$

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 6) = C_{12,6}.(0.3723)^{6}.(1-0.3723)^{6} = 0.1505$

0.1505 = 15.05% probability that the hockey team wins 6 games in November

4 0

3 years ago

The ratio of boys to girls in the sixth grade is 2:3. If there are 80 boys, how many are girls? Solve using unit rates.

Aliun [14]

Answer:n 80

Step-by-step explanation:

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3 years ago

Explain please and tell me how to do it ?

SCORPION-xisa [38]

The trick to calculating the area here is to subdivide the diagram into smaller parts. For example, there's a 3 cm-by-3cm square. The rectangle is 4 cm by 8 cm.. The triangle has a base of 5 cm and a height of 3 cm.

Total area = area of square + area of rectangle + area of triangle

= 9 cm^2 + 32 cm^2 + (1/2)(5 cm)(3 cm)

= (9 + 32 + 7.5) cm^2

= 48.5 cm^2 (total area of figure)

8 0

3 years ago

Read 2 more answers

How long will it take an investment to double in value if the interest rate is 10% compounded continuously? (round your answer t

Varvara68 [4.7K]

Assumed
PW as 100
FW as twice PW as 200

answer is 7.27254 years

manually take the log of both sides and solve for n

8 0

4 years ago