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ivolga24 [154]
3 years ago
10

Solve for x: (1/2) + 4/(2x) = (x + 4)/10

Mathematics
1 answer:
Charra [1.4K]3 years ago
8 0

Answer:

x  =  5 ,  − 4

Step-by-step explanation:

Solve the rational equation by combining expressions and isolating the variable  x .

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For all x,(x-7)²= ?
castortr0y [4]

Answer:

I'm pretty sure the answer is E

8 0
1 year ago
Help me out please !
Inga [223]

Answer:

I think it is a

Step-by-step explanation:

3 0
3 years ago
If it takes 2/3 hours to paint 2/5 room how many hours does it take to paint one room
Mandarinka [93]

Step-by-step explanation:

2/3 hours for 2/5 room.

that means

5×2/3 = 10/3 hours for 5×2/5 = 2 rooms

and then 1 room in 10/3 / 2 = 5/3 hours

4 0
2 years ago
Joel has a goal to practice his clarinet for 4 hours per week. The list 5 1below shows the number of hours Joel has practiced so
Reil [10]

Answer:

Joel need to practice this week = \frac{3}{4} hour

Step-by-step explanation:

P.S - the exact question is -

As given

Total practice goal of Joel = 4\frac{1}{2} hours

He practiced on : Monday - 1\frac{1}{2} hours

                             Wednesday - 1\frac{1}{4} hours

                             Thursday - 1 hour

Let the remaining practice = x hours

⇒ Total practice =  4\frac{1}{2} hours

⇒1\frac{1}{2} + 1\frac{1}{4} + 1 + x = 4\frac{1}{2}

⇒ 1 + \frac{1}{2} + 1 + \frac{1}{4} + 1 + x = 4 + \frac{1}{2}

⇒3 + x - 4 = \frac{1}{2} -  \frac{1}{2} - \frac{1}{4}

⇒x - 1 = -\frac{1}{4}

⇒x = -\frac{1}{4} + 1 = \frac{-1 + 4}{4} = \frac{3}{4}

⇒x = \frac{3}{4} hour

∴ we get

Joel need to practice this week = \frac{3}{4} hour

8 0
3 years ago
There is I teacher for every 18 students on a school trip. How many teachers are there if 72 students go on the school trip?
mojhsa [17]

Answer:

55/128� * 100 = 43% females in the group

Step-by-step explanation:

On a school trip the ratio of the number of teachers to students is 1:15.

The ratio of male students to female students is 7:5.

Work out what percentage of people on the trip are female.

Give your answer correct to the nearest whole number.

I've tried multiplying by 5 but I just don't get ratios.

:

you have to know the male to female teachers ratio also

Let's assume the male to female teachers was 3:5, that means we have a minimum of�8 teachers

The teacher student ratio is given as 1:15, therefore we have 15 *�8 = 120 students

The total people, students and teachers = 128

 

We know we have� 5 female teachers. Find how many female students

let x = the multiplier, then

7x = number of male students

5x = number of female students

7x + 5x = 120

12x = 120

x = 120/12

x = 10

therefore the number of female students 10*5 = 50 female students

Total female teachers and female students 5 + 50 = 55

Find the percentage females (55) �to total in the group (128)

55/128� * 100 = 43% females in the group

8 0
2 years ago
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