A chemist needs 90 milliliters of a 57% solution but has only 27% and 72% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.

Answer:

0.3048

Step-by-step explanation:

0.3048

Answer:

4.88 meters

Step-by-step explanation:

1 foot is approximately 0.3048 meters. 16(0.3048)= 4.88 meters (rounded to the nearest hundreth).

Hope this helped!

Answer:

Steps:

a.

x = 7×tan(28)

x = 7×0.531..

x ≈ 3.72

b.

x = 7/cos(30)

x = 7/0.86..

x ≈ 8.08

c.

x = 6×sin(41)

x = 6×0.65..

x ≈ 3.94

Answer:

20%

Step-by-step explanation:

465 - 372 = 93

93/465 = 0.2

0.2 × 100 = 20

Hope this helps !

Answer:

i ) $96120

ii ) Singular adult fee in 2012: $186.91

Step-by-step explanation:

( i )

To find the costs of all 560 peoples you:

Multiply the amount of people by the fee,

440 × 198 = $87120

120 × 120 = $9000

Add these go get the sum of member fees: $96120

( ii )

First calculate what 1% of the adult fee would be:

198 ÷ 100 = 1.98 = 1%

Then calculate what 0.1% of the fee:

1.98  ÷ 10 = 0.198 = 0.1%

Now multiply 5 by the value of 1% to get 5% :

5 × 1.98 = 9.9

Then multiply 6 by the  0.1% to get 0.6% :

0.198 × 6 = 1.188

Add these numbers together to get:

1.188 + 9.9 = $11.088 = 5.6%

Due to the fact this question is referring to money we will round this number 2 decimal places (as money does not exceed 2dp)

$11.09

We now subtract this from the 2013 fee to find out the 2012 fee

$198 - $11.09 = $186.91

$186.91 was the cost of a singular adult fee in 2012

Answer:

The measure of angle B is 69°.

Step-by-step explanation:

All angles of the triangle should add up to 180°, so you add angle A and angle C together, and then subtract that number from 180.

49 + 62 = 111

180 - 111 = 69

69°

Answer:

POSSIBLY 1

Step-by-step explanation:

Answer:

sin θcos θ

hope it is helpful to you

Answer:

sin A cos A

Step-by-step explanation:

[ I don't know to type angle theta here so assume A as theta]

As , sin A= p/ h

cos A= b/ h

so,

sinA cosA = p/ h × b/h

= pb/ h^2 ( which is not equal to 1 )

Tip; you can easily verify other relations expressing trigonometric ratios in terms of p,b & h and further simplifying..

Answer:

x=7

Step-by-step explanation:

4x+12=40

-12

4x=28/4

Answer:

x =7

Step-by-step explanation:

4x + 12 = 40

4x + 12 - 12= 40 -12

4x = 28

4/4= 28/4

x= 7

Answer:

Step-by-step explanation:

Multiple the numbers one by one and the answers you’ll get u can choose to divide multiple plus or minus and u will get the answer

Answer:

191 students  B option is correct

Step-by-step explanation:

Total students=464

In band=89

sports teams=215

Number of students who participates in activities is

215+89=304

31 participate in  both activities so,

304-31=273

273 who participate in activities

Total students-273=Not involved in any activity

464-273=191

Answer:

Let f = dollars spent on flights, h dollars spent on hotels, and p dollars spent on all other purchases.

Step-by-step explanation:

Answer:

[tex] \frac{x - 10}{8} [/tex]

Step-by-step explanation:

[tex] \frac{3x}{8} - \frac{x + 5}{4} [/tex]

The common denominator of both fractions is 8. Therefore,, divide the denominator of each fraction, then multiply what you get by the numerator of each fraction.

Thus:

[tex] \frac{1(3x) - 2(x + 5)}{8} [/tex]

[tex] \frac{3x - 2x - 10}{8} [/tex]

[tex] \frac{x - 10}{8} [/tex]

Answer:

Angle B: 28 degrees

Side a: 27.6

Step-by-step explanation:

Angle B:

180-112-40=28

Side a:

sin 28/14 = sin 112/a

a = sin 112(14)/sin 28

a = 27.6

Answer:

saw this question on egde its b

Answer:

y= -2

Step-by-step explanation:

Answer:

[tex]y=2[/tex]

Step-by-step explanation:

Well first move the 6 to the right side to isolate the y by taking 6 away from both sides to get [tex]-5y=10[/tex]. Then divide both sides by -5 to get [tex]y=2[/tex]. Hope this helps!

Answer:

B then A

Step-by-step explanation:

Just easy

Answer:

first is A

then is B

Step-by-step explanation:

your welcome

Answer:

c

Step-by-step explanation:

Answer: think its c

Step-by-step explanation:

I believe the answer is 18%

Step-by-step explanation:

Hello! I believe the answer is A. 30+0.25p=60.

Elijah has to pay a facility charge which is 30$. So we can go ahead and write that down! He has 60$ to spend, but he has to pay $0.25 per paintball. So we write that as 30+0.25p=60!! If you have any questions comment doen below!

Answer:i think it A to

Step-by-step explanation: it is the only one correct

Answer:  it has no solutions

Step-by-step explanation:

if im wrong i owe u

2(x - 3) = 2x + 5     distribute by multiply 2 into the parenthesis.

2x - 6 = 2x + 5

-2x        -2x         subtract 2x on both sides, 2x's will cancel on both sides.

____________

-6 = 5

Since -6 = 5, there is no solution because -6 cannot equal to 5, which is a false statement. Thus, "C. There is no solution." is the correct answer. Hope this helps :)

Answer:

[tex]50^{o}[/tex]

Step-by-step explanation:

90 + 40 = 130

180 - 130 = 50

Answer:

The answer is D

Answer: 18

Step-by-step explanation:

Answer:

Step-by-step explanation:

Choose 3.

3^3 = 27;

3^0 = 1; and

3^(-2) = 1/9

Answer:

[tex]\frac{0+2}{3+1}[/tex]

Step-by-step explanation:

so basically we all know the formula for slope is [tex]\frac{x2-x1}{y2-y1}[/tex]. since the numbers are labeled, just plug them into their spots!

Answer:

b (-2)

Step-by-step explanation:

because the solution is y2-y1 over x2-x1 so you plug in the number that your Miss