All categories

3 years ago

PLS HELP ME WITH THIS ALGEBRA!

Mathematics

1 answer:

artcher [175]3 years ago

6 0

Answer:

120 g

Step-by-step explanation:

A salt solution contains 10% salt and weights 80g.

Salt content of the solution is:

80*0.1 = 8 g

4% solution has 8 g salt, total solution is:

0.04x = 8
x = 8/0.04 = 200 g

Water to be added:

200 - 80 = 120 g

You might be interested in

What is the value of y in the following system of equations? explain how you found your answer

AlekseyPX

Step-by-step explanation:

I've used elimination method over here but it can also be done by using substitution.

7 0

3 years ago

Read 2 more answers

4. Ethan types 1/5 of a page in 1/4 minute. How much time does it take him to type a full page?

Allisa [31]

Answer:

4/5 minute or 12 seconds

Step-by-step explanation:

1/4 page= 12 seconds

1 page = 48 seconds

48/60

24/30

8/10

4/5

3 0

3 years ago

Suppose you have 60 red marbles and 40 blue marbles in a

andrew-mc [135]

Answer: The required probability is 0.26.

Step-by-step explanation: Given that there are 60 red marbles and 40 blue marbles in a box 10 marbles are picked without replacement.

We are to find the probability of selecting 6 red marbles.

Since the marbles are picked up without replacement, so it is a situation of combination.

Let S denote the sample space of the experiment of drawing 10 marbles and E denote the event that 6 marbles are red.

So,

$n(S)=^{100}C_{10}=\dfrac{100!}{10!(100-10)!}=\dfrac{100!}{10!90!}=17310309456440,\\\\\\n(E)=^{60}C_6\times^{40}C_4=\dfrac{60!}{6!54!}\times\dfrac{40!}{4!36!}=50063860\times91390.$

Therefore, the probability of event E is given by

$P(E)=\dfrac{n(E)}{n(S)}=\dfrac{50063860\times91390}{17310309456440}=0.26.$

Thus, the required probability is 0.26.

6 0

3 years ago

Geometry.

Harman [31]

Check the picture below.

8 0

3 years ago

Computer purchases: Out of 809 large purchases made at a computer retailer, 347 were personal computers, 398 were laptop compute

Luda [366]

Step-by-step explanation:

personal- 347 ÷ 809 = 0.43%

lap top- 398 ÷ 809 = 0.49%

printer- 64 ÷ 809 = 0.08%

6 0

3 years ago