2 years ago

-3.8x = -7.4 Is x=2 is a solution

Mathematics

1 answer:

Lana71 [14]2 years ago

6 0

No

The anser is x= -11,2

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In-s [12.5K]

Answer:D

Step-by-step explanation:

(3x^3 - 5x^2 + 4x - 9)-(7x^3 - 8x^2 - 5x + 10)

open brackets

3x^3 - 5x^2 + 4x - 9 - 7x^3 + 8x^2 +5x - 10

Collect like terms

3x^3-7x^3-5x^2+8x^2+4x+5x-9-10

-4x^3+3x^2+9x-19

8 0

3 years ago

There are 42 students 21 are in 7th grade 14 are in 8th 7 are in ninth whats the probability of an eighth grader winning

Varvara68 [4.7K]

Answer:

The probability of an eighth grader winning is 1/3

Step-by-step explanation:

Total no. of students = 42

Number of students in 7th grade = 21

Number of students in 8th grade = 14

Number of students in 9th grade = 7

Probability of event = $\frac{\text{Favorable outcomes}}{\text{Total outcomes}}$

So,the probability of an eighth grader winning= $\frac{14}{42}=\frac{2}{6}=\frac{1}{3}$

Hence The probability of an eighth grader winning is 1/3

3 0

2 years ago

4 divided by 992 because my calculator isn't helping and i'm not trynna fail

Black_prince [1.1K]

Answer:

4/992 = 0.00403225806

Step-by-step explanation:

I hope this helps!!

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3 years ago

ram bought a second hand cycle for RS.1250 and spent rs.200 on its repair. when he sold if after few days he got RS.1250. what w

Anna [14]

Answer:

hope it helps you to please mark me brainliest

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2 years ago

A rocket is launched from the top of a 99-foot cliff with an initial velocity of 122 ft/s. a. Substitute the values into the ver

jasenka [17]

I think it'd be 9 seconds, not 100% sure though.

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3 years ago