All categories

2 years ago

I've literally asked this question 5 times lol. Can someone please help me?

Mathematics

2 answers:

Tju [1.3M]2 years ago

6 0

I think i know the answer to that question. just wait for a sec.

skelet666 [1.2K]2 years ago

3 0

33 degrees i beleive

You might be interested in

If every gram of salt is 20.9% chlorine, how much is required to make a 220 ppm chlorine solution with 350 grams of water?

Temka [501]

Answer:

The amount of salt required is 0.3685 grams.

Step-by-step explanation:

20.9% of 1 gram of salt is chlorine, which means the grams of chlorine in 1 gram of salt are

$\dfrac{20.9\%}{100\%} *1\: gram = 0.209g\: \text{chlorine}$

Now, to make 220 ppm solution, it must be that

$\dfrac{220}{10^6} = \dfrac{y}{350+y},$

where $y$ is the grams of chlorine required.

We rearrange the equation and solve for $y:$

$220(350+y) = 10^6y$

$77000+220y =10^6y$

$77000 = (10^6-220)y$

$y = \dfrac{77000}{999780}$

$\boxed{y= 0.07702g}$

since 1 gram of salt has 0.209 grams of chlorine, 0.07702g of chlorine corresponds to

$\dfrac{0.07701}{0.209} = 0.3685g {\text{ of salt. }$

Thus the amount of salt required is 0.3685 grams.

7 0

2 years ago

Write the equation, in slope intercept form of the line that passes through the given point and is perpendicular to the give lin

Montano1993 [528]

Y=-3x+10 if you take the negative reciprocal and plug in the point to solve for b.

4 0

3 years ago

Read 2 more answers

Find the future value of an annuity due of $400 each quarter for 4 1 2 years at 13%, compounded quarterly. (Round your answer to

Flura [38]

Answer:

$9891.23

Step-by-step explanation:

The formula for future value of annuity due is:

$FV=P[\frac{(1+r)^{n}-1}{r}]*(1+r)$

Where,

FV is the future value of the annuity (what we need to find)
P is the periodic payment (here it is $400)
r is the interest rate per period (here 13% yearly interest is actually $\frac{13}{4}=3.25$ percent per period(quarter))
n is the number of periods (here the annuity is for $4\frac{1}{2}$ years, which is $4\frac{1}{2}*4=18$ periods, since quarterly and there are 4 quarters in 1 year)

Substituting all those values in the equation we get:

$FV=400[\frac{(1+0.0325)^{18}-1}{0.0325}]*(1+0.0325)\\=400[23.9497]*(1.0325)\\=9891.23$

Hence, the future value of the annuity due is $9891.23

3 0

3 years ago

What is the equation of this graphed line?

xz_007 [3.2K]

Answer is highlighted in blue. If you have any questions feel free to ask.

3 0

2 years ago

Read 2 more answers

An athletic field is a 48 yd-by-96 yd rectangle, with a semicircle at each of the short sides. A running track 20 yd wide surr

MA_775_DIABLO [31]

The distance would be equal to 2 times the longest side of the rectangle plus twice the shortest side multiplied by pi / 2 for the semicircle, that is:

longest side 96 and shortest 48

D = 2 * (96) + 2 * (1/2) * pi * 48

D = 192 + pi * 48

This shorter side, which starts at 48, will expand each time by two more in proportion to 20 of the running track between 8 than the number of divisions, that is, 2 * (20/8) = 5

In other words, there are 8 distances, like this:

D1 = 192 + 3.14 * 48 = 342.72 yd

D2 = 192 + 3.14 * (48 + 5) = 358.42 yd

D3 = 192 + 3.14 * (48 + 10) = 374.12 yd

D4 = 192 + 3.14 * (48 + 15) = 389.82 yd

D5 = 192 + 3.14 * (48 + 20) = 405.52 yd

D6 = 192 + 3.14 * (48 + 25) = 421.22 yd

D7 = 192 + 3.14 * (48 + 30) = 436.92 yd

D8 = 192 + 3.14 * (48 + 35) = 452.62 yd

6 0

2 years ago