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2 years ago

X/30 + X/40= 1 Solve for x

Mathematics

2 answers:

Svetllana [295]2 years ago

4 0

Answer:

17 1/7 I think

Step-by-step explanation:

slega [8]2 years ago

4 0

x=17.1

Step-by-step explanation:

$\frac{x}{30} + \frac{x}{40} = 1 \\ \frac{3x + 4x}{120} = 1 \\ \frac{7x}{120} = 1 \\ \frac{7x}{120} = 1 \\ 7x = 120 \\ x = \frac{120}{7} \\ x =17.1$

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-21 , 55 , -97 , 34 , 56 , -83 least to greatest?

FinnZ [79.3K]

Answer:

the answer is -97, -83, -21, 34, 55, 56

Step-by-step explanation:

The simple way to put it is negitives are backwards, the bigger the number the lesser it gets. So always put the highest negitive as least, hope this helps!

5 0

3 years ago

Read 2 more answers

A student has some $1 and $5 bills in his wallet. He has a total of 14 bills that are worth $34. How many of each type of bil

jeka57 [31]

Solution:

we are given that

A student has some $1 and $5 bills in his wallet.

Let there x $1 bills and y number of $5 bills.

He has a total of 14 bills that are worth $34.

So we can write

$x+y=14$

$x+5y=34$

Now solve these two equations together using substitution as follows

$14-y+5y=34\\
\\
4y=34-14\\
\\
4y=20\\
\\
y=5\\
\\
x=14-y=14-5=9\\$

Hence there are 9 $1 bills and 5 bills are of $5.

5 0

3 years ago

How do I solve this?

Yuki888 [10]

The answer is B. The values of y must only be positive because it is equal to
$| - x|$
The other options states that the values of y could be negative which is why it is wrong.

3 0

3 years ago

Laura created a website to create T-shirts. In the first month she put up her website she had only a single T-shirt order. Each

kiruha [24]

Laura received 144 orders over the first year

Solution:

Given function is:

f(n) = 2n - 1

Where, "n" is the month

In the first month she put up her website she had only a single T-shirt order

f(1) = 2(1) - 1 = 2 - 1

f(1) = 1

There are 12 months in a year

For the second month, and third month and so on, substitute n = 2, 3 and so on

f(2) = 2(2) - 1 = 4 - 1 = 3

f(3) = 2(3) - 1 = 6 - 1 = 5

f(4) = 2(4) - 1 = 8 - 1 = 7

f(5) = 2(5) - 1 = 10 - 1 = 9

f(6) = 2(6) - 1 = 12 - 1 = 11

f(7) = 2(7) - 1 = 14 - 1 = 13

f(8) = 2(8) - 1 = 16 - 1 = 15

f(9) = 2(9) - 1 = 18 - 1 = 17

f(10) = 2(10) - 1 = 20 - 1 = 19

f(11) = 2(11) - 1 = 22 - 1 = 21

f(12) = 2(12) - 1 = 24 - 1 = 23

Thus total orders received over first year:

Total orders = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23

Total orders = 144

Thus she received 144 orders over the first year

8 0

2 years ago

Mom is 60 years old and daughter is half mom's age. How old was daughter when mom was 4 times her age?

rewona [7]

Answer:

10 years old

Step-by-step explanation:

The difference in ages is 60 -30 = 30 years. When mom was 4 times daughter's age, the difference in their ages was 3 times the daughter's age.

The age difference was 30 years at that time, so the daughter was 10 years old.

4 0

3 years ago