what is y- 10 = 9(x + 8) in standard form

Answer: 12.5 liters of 70% hydrogen peroxide solution and 37.5 liters of 90% hydrogen peroxide solution is required.

Step-by-step explanation:

Let x = Quantity of 70% hydrogen peroxide solution.

y = Quantity of 90% hydrogen peroxide solution.

To obtain: 50 liters of a 85% solution.

x+y =50   (i)   (Total quantity of solution)

0.70x+0.50y=0.85(50)   (Total quantity of  hydrogen peroxide)

⇒ 0.70x+0.50y= 42.5 (ii)

Multiply 0.70 to (i) , we get

[tex]0.70x+0.70y=0.70(50)\\\\\Rightarrow\ 0.70x+0.70y=35\ \ \ \ (iii)[/tex]

Subtract (iii) from (ii), we get

[tex]0.20y=7.5\\\\\Rightarrow\ y=\dfrac{7.5}{0.20}\\\\\Rightarrow\ y=37.5[/tex]

Put value of y in (i) , we get

[tex]x+37.5=50\\\\\Rightarrow\ x=50-37.5\\\\\Rightarrow\ x= 12.5[/tex]

Hence, 12.5 liters of 70% hydrogen peroxide solution and 37.5 liters of 90% hydrogen peroxide solution is required.

Answer:

(2, 0)

General Formulas and Concepts:

Pre-Algebra

Algebra I

Step-by-step explanation:

Step 1: Define systems

-20y - 7x = -14

10y - 2x = -4

Step 2: Rewrite systems

10y - 2x = -4

Step 3: Redefine systems

-20y - 7x = -14

x = 5y + 2

Step 4: Solve for y

Substitution

Step 5: Solve for x

Step 6: Graph systems

Check solution set and systems.

Answer:

PQ+QR are the 2 line segments that make up PR

Therefore, 18+9=PR

PR=27

Step-by-step explanation:

9514 1404 393

Answer:

  8. 4 +2q²/p² -4r/p +r²/p²

  9. (x, y) = (3/4, -17/8)

Step-by-step explanation:

All of these questions are asking you to make use of the fact that ...

  α + β = -q/p

  αβ = r/p

__

8. (2 +α²)(2 +β²) = 4 + 2(α² +β²) +α²β²

  = 4 +2((α+β)² -2αβ) +(αβ)²

Substituting the above for the sum and product, you have ...

  = 4 + 2((-q/p)² -2(r/p)) +(r/p)²

  = 4 +2q²/p² -4r/p +r²/p²

__

9. This is asking for the vertex of the parabola. The x-coordinate is ...

  x=-b/(2a) = -(-3)/(2(2) = 3/4

Then the y-coordinate is ...

  y = (2(3/4) -3)(3/4) -1 = (-3/2)(3/4) -1 = -9/8 -1 = -17/8

The (x, y) values of interest are (3/4, -17/8).

Answer:

The British controlled Africa, but feelings of nationalism started by the pan Africa movement lead to more and more people in Africa wanting their independence. ... Nationalism lead to the Kenyans feeling that their land was taken unfairly. Eventually, conflict led to independence.

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

-1.5+3.5= 2

2+2=4

Answer:

4

Step-by-step explanation:

−1.5+3.5+2

=2+2

=4

{y,x}={3,7}

hope this is helpful :)

Answer:

B 12

Step-by-step explanation:

I got it right

Answer:

D

Step-by-step explanation:

300+50t=v

The required equation model would be 300 + 50t = v which is the correct answer would be an option (D).

The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.

The $300 football Sarah spent was autographed. The football is now worth $50 more than it was when she originally bought it which is given in the question.

Since she bought an autographed football for $300

The value of the football has increased by $50 every year

So the equation models would be as:

⇒ 300 + 50t = v

Here, v represents the value of the football, and t represents the years after she purchased it.

Hence, the correct answer would be option (D).

Learn more about the equation here:

brainly.com/question/10413253

#SPJ2

Answer:

Step-by-step explanation:

in standard form : 2n-6p = 12

evaluate: n=3p+6

pls can you be more specific next time, hope one of these answers your question

Answer:

hola, lo puedes colocar en ingles por favor, seria mas facil para mi

Step-by-step explanation:

Answer:

687

Step-by-step explanation:

Answer:

687 is the answer

Step-by-step explanation:

23,358 / 34 = 687

Answer:

so what it is asking you is if there are so many minutes that the hamburgers are being brought out at is how fast it can take the workers to get out as many hamburgers. so at the rate of 1 minute they can get 1 and a half wrappers sold with in one minute and so forth. hope this helps

Step-by-step explanation:

Answer:

ougivkvy

Step-by-step explanation:

Answer:

delet

Step-by-step explanation:

Answer:

Above

Step-by-step explanation:

20s+6y=562

Step-by-step explanation:

the regular price would be 400$

Answer:

(5x + 18) ( 3x-2)

Step-by-step explanation:

(3x       ) ( 5x       )

then guess and check

(5x + 18) (3x-2)

i find it easier to look at the answers and redistribute them to create a trinomial especially if they give you a multiple choice

Answer:

Answer 112.5  :)

Step-by-step explanation:

Based on the distance she was able to drive before lunch, Ashley was able to drive 112.5 miles

Ashley has a total of 200 miles to drive in order to get to her destination.

Out of that, she drove 87.5 miles and then rested. The number of miles to go is:

= Number of miles in total - Number of miles driven

= 200 - 87.5

= 112.5 miles

In conclusion, Ashley has driven 112.5 miles.

Find out more at https://brainly.com/question/25282501.

Answer:

A positive slope means that something is increasing. For example if there is a positive slope in the graph of position, that means the position is increasing, or there's a positive velocity. Another example, if the graph of velocity has positive slope, it means it is increasing or there's acceleration.

Answer: C, 3158

Step-by-step explanation:

We are given the equation [tex]h(x) = -49x-125[/tex] and we are given the hint to substitute [tex]h(-67)[/tex] into the equation. So let's do that!

[tex]h(-67) = -49(-67)-125[/tex]

we substitute -67 for the values of x.

Then, we simplify.

[tex]= 3283 - 125[/tex]

[tex]h(x) =3158[/tex]

We then subtract the numbers we multiplied together to get out answer: 3158!

Hoped this helped!

Answer:

The answer is 30

I can't explain because the explanation is long

Answer:B

Step-by-step explanation:

Answer:

The simplest form is D) 5:2

Answer: 5:2

Step-by-step explanation:

HAVE A GOOD DAY!!!!!!

Answer:

$170

Step-by-step explanation:

Given that:

One time fee for the use of trash dumpsters = $50

Charges for demolition per hour = $15

Time period for which trash dumpsters are used per day = 8 hours

To find:

The cost of 8 hours of operation = ?

Solution:

Here, to find the required cost, we need to first multiply the number of hours with the per hour cost of using the trash dumpsters.

And then we need to add the fixed / one time cost of the trash dumpsters to find the required cost.

Cost for using it for 8 hours = [tex]8 \times 15 = \$120[/tex]

Total cost for using it for full 8 hours = Cost for using it for 8 hours + One time cost = $120 + $50 = $170

Therefore, the answer is: $170

9514 1404 393

Eexplanation:

16. Suppose the roots are α and kα. Then we can write the equation as ...

  a(x -α)(x -kα) = 0

  ax² -ax(α +kα) +akα² = 0

Comparing to the original equation, we can equate coefficients to get ...

Solving the first for α gives ...

  α = -b/(a(1+k)

Substituting into the second, we have ...

  c = ak(-b/(a(1+k)))²

Multiplying by a(1+k)², we get ...

  (1+k)²ac = kb²

Using k=2 gives ...

  9ac = 2b² . . . . . as required

__

17. Using the previous result with k=1 (equal roots), we have ...

  (1+k)²ac = kb²

  4ac = b² . . . . . for k=1

______

Additional comment

We observed that the problems were similar, but had different factors relating the roots. So, we elected to solve the general case, then fill in the specific values for the two problems.

Answer:

Salary = $43,313.40

Step-by-step explanation:

Let his salary be x.

Now we're told that;

Pension = 12% of his salary = 0.12x

Health Insurance = 0.3% of salary = 0.003x

Disability Insurance = 0.4% of salary = 0.004x

Since his total contract with benefits is worth $48,814.20

This means that;

x + 0.12x + 0.003x + 0.004x = 48814.2

1.127x = 48814.2

x = 48814.2/1.127

x = $43,313.40

Answer:

Step-by-step explanation:

fdsdfghjhgv njhgfghj nbhgvfgbh nhgvfbhg huygvbh huyvg hbv

Answer:

-17

Step-by-step explanation: