can someone help me with this

Answer:

Check Description for answer

Step-by-step explanation

do it urself

Answer:

A) solution 2 is more acidic than solution 1

Step-by-step explanation:

A chemist prepares two acid solutions:

Solution 1: 3 parts sulfuric acid to 7 parts water

Ratio of sulphur to water: 3/7 (3:7)

Solution 2: 4 parts sulfuric acid to 9 parts water

Ratio of sulphur to water: 4/9 (4:9)

___________________________________________________

Part A: (using ratios to determine which solution is more acidic)

First we make same denominator, since the denominators are 9 and 7, we have to find the lcm (lowest common multiple) they both have with is 63. To do that, we must multiply the denominators with either 7 or 9.

Solution 1: Numerator (3) multiplied by 9 and then denominator (7) multiplied by 9. This makes out fraction/ratio 27/63

Solution 2: Numerator (4) multiplied by 7 and then denominator (9) multiplied by 7. This makes out fraction/ratio 28/63

Since 28/63 (or just 28) is a larger quantity than 27/63 (or just 27) this means solution 2 is more acidic than solution 1.

Mathematical Line (Not sure what you would call this lol): 28 > 27

Part B: (Let 'y' amount of sulfuric acid mix with 'x' amount of water)

Equation of solution 1: y = 3/7x

Equation of solution 2: y = 4/9x

Please find attachment for graph.

Part C: Don't have a graph, sorry! (part a. method is more preferred to find more acidic because it gives the actual acidic amount.)

#1 is 6.34

#2 is 27.25

#3 is Gallons of gas use for work and errands is 10.

#4 is 215

Hope this helps

Answer:

The volume (V) of a cone can be calculated using the formula: V = (1/3)πr^2h, where r is the radius and h is the height.

Substituting the given values, we get:

V = (1/3) x 3.14 x 9^2 x 16

Calculating this expression gives us:

V = 1810.08 cubic inches

Rounding to the nearest hundredth gives us:

V ≈ 1810.08 cubic inches (rounded to two decimal places)

Therefore, the volume of the cone is approximately 1810.08 cubic inches.

Answer:

1363.04

Step-by-step explanation:

V = (1/3) * 3.14 * 9^2 * 16

Simplifying:

V ≈ 1363.04 cubic inches

Answer:

(2,7)(3,2)

Step-by-step explanation:

Answer:

A.

Step-by-step explanation

Key 1 / 5 = 15

1 / 55889   =   15, 15, 18, 18, 19

2 / 0  =  20

3 / 0339  = 30, 33, 33, 39

4 / 15  =  41, 45

So the answer is A.

:)

Answer:

-----------------------------------

The two angles with the variable x form a linear pair and therefore:

Angles 16x - 18 and 12y are congruent as vertical angles:

Answer:

x = 7.5

y = 8.5

Step-by-step explanation:

Linear Pair

Two adjacent angles that sum to 180° (two angles which when combined together form a straight line).

To find x, equate the sum of the two angles with the variable x to 180° and solve:

⇒ (16x - 18)° + (10x + 3)° = 180°

⇒ 16x - 18 + 10x + 3 = 180

⇒ 26x - 15 = 180

⇒ 26x = 195

⇒ x = 7.5

Vertical Angles Theorem

When two straight lines intersect, the opposite vertical angles are congruent.

Therefore:

⇒ (16x - 18)° = 12y°

Substitute the found value of x into the equation and solve for y:

⇒ 16x - 18 = 12y

⇒ 16(7.5) - 18 = 12y

⇒ 120 - 18 = 12y

⇒ 102 = 12y

⇒ y = 8.5

Answer:

The first option, V ≈ 1607.7 in²

Step-by-step explanation:

Find the volume of the given cylinder.

\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)

Given:

r = 8 in

h = 8 in

π = 3.14

Find:

V = ?? in³

\(\hrulefill\)

Now solving,

Substitute the given values into the formula:

=> V = (3.14)(8)²(8)

Using a calculator to simplify:

=> V = 1607.68 in²

Rounded to the nearest tenth:

∴ V ≈ 1607.7 in²

Thus, the first option is correct.

9.3  ×  10 ^7

Explanation:

The decimal point is to the right of the last zero, so move it left until you get in between  9  and  3 , so there is only one digit to the left.  That's 7  spaces, so the answer is  9.3  ×  10 ^7 .

Step-by-step explanation:

Answer: 9.3 to 10 to the 7th power.

93,000,000 divided by 10 to the 7th is 9.3. So, 93,000,000 in scientific notation would be 9.3 × 10 to the 7th. You have to move the decimal point from 93,000,000 a trick for this is to count the zeros and divide by ten a calculator would make this easier. I hope I helped.

Answer:

A= x=-4

B= x=4

C= y=4

D= y=-2

Step-by-step explanation:

Answer:

27.7 is you answer I'm like 89 percent sure

Answer:27.7

Step-by-step explanation: Since it is a right angle (90°) you do 90-62.3=27.7

Answer: a

Step-by-step explanation:

Answer: D. −1/4(x+2)

Step-by-step explanation: The expression -1/4x + 1/2 can be simplified by factoring out 1/4, which gives -1/4(x - 2).

Therefore, the expression that is equivalent to -1/4x + 1/2 is D. -1/4(x+2).

Answer:

f(x)=−(x+1)2+2g(x)=1/2

Answer:

192 hours per day / 8 hours per person per day = 24 people

Step-by-step explanation:

Assuming each person works for 8 hours a day, the total number of hours needed to complete the project is:

720 person-days x 8 hours = 5,760 hours

To complete the project in 30 days, the total number of hours needed per day is:

5,760 hours / 30 days = 192 hours per day

Answer:

your allowance is $25 and your friends is $15

Step-by-step explanation:

40/8*3=15

40/8*5=25

Answer: It needs to ship 90 cartons of strawberries to each store

Step-by-step explanation:

1350 cartons of strawberries

15 stores

1350 / 15 = 90

Answer:

equation-->-2(x+5)=6

x=-8

Step-by-step explanation:

Answer: 1,600 ml

Step-by-step explanation:

You can arrive at this answer by subtracting the amount of cough syrup used (1,200 ml) from the initial amount in the bottle (2.8 L, which is 2,800 ml).

2,800 ml - 1,200 ml = 1,600 ml

I hope this helps :)

Answer: 1,600 mL

Step-by-step explanation:

1. convert the 1,200 mL to L, which is 1.2 L.

2. Subtract that value from 2.8 L, equaling 1.6 L

3. Convert the 1.6 L back into mL by multiplying by 1000, which is equivalent to 1600 mL.

Answer:

The line x=b2a will serve as the parabola's axis of symmetry.

Detailed explanation:

Graph the parabola y=x2−7x+2 .

To get the values of a, b, and c, compare the equation with y=ax2+bx+c.

In this case, a=1, b=7, and c=2.

To write the axis of the symmetry equation, use the coefficient values.

The line x=b2a serves as the axis of symmetry for a quadratic equation of the form y=ax2+bx+c. Therefore, x=(7)2(1) or x=72 is the equation of the axis of symmetry of the given parabola.

To determine the vertex's y coordinate, change x=72 in the equation.

y=(72)2−7(72)+2 =494−492+2 =49 − 98 + 84  =−414

The vertex's coordinates are (72, 414) as a result.

Answer:

C

Step-by-step explanation:

170/100*130

17/10*130

17*13/1

=221

C

Answer:

c

Step-by-step explanation:

Step-by-step explanation:

we are using the right triangle altitude theorem. it means that in a right-angled triangle the geometric mean of the two segments of the Hypotenuse (the baseline opposite of the 90° angle) equals the altitude.

in other words

h² = p×q

h = height

p, q are the 2 segments of the Hypotenuse.

so, in our case we have

100 = x(x + 21) = x² + 21x

that gives us the following quadratic equation

x² + 21x - 100 = 0

the general solution to a quadratic equating is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 1

b = 21

c = -100

so,

x = (-21 ± sqrt(21² - 4×1×-100))/(2×1) =

= (-21 ± sqrt(441 + 400))/2 = (-21 ± sqrt(841))/2 =

= (-21 ± 29)/2

x1 = (-21 + 29)/2 = 8/2 = 4

x2 = (-21 - 29)/2 = -50/2 = -25

x2 would give us negative lengths for the triangle, which does not make sense.

so, x = 4 is our solution.

that makes the segments of the Hypotenuse 4 and (4+21) = 25 units long (the whole baseline is then 4+25 = 29).

Answer:

D

Step-by-step explanation:

The length of segment NB is 0.833

From the question, we have the following parameters that can be used in our computation:

The rectangle

The area of the rectangle is

Area = (20 + x) * 10

The area of MNBC is

Area  = 1/2 * 10 * (x + 20 + x - 5)

Area  = 5(2x + 15 )

The area of the quadrilateral MNBC is 40% of the total area of the rectangle

So, we have

5(2x + 15) = 40% * (20 + x) * 10

5(2x + 15) = 4* (20 + x)

When evaluated, we have

x = 0.833

Read more about area at

https://brainly.com/question/31752704

#SPJ1

Answer:

X=1

Step-by-step explanation:

The total area of the rectangle is 20x10=200

so the area of MNBC is: 40%x200=80

MC= 20-5=15

so (x+15).10/2=80 (according to the trapezoidal area formula)

x=1

so the answer is 1

To learn more about the Trapezoidal area formula

https://brainly.com/question/31395425?referrer=searchResults

1) Popcorn unit price: 17.57/7 = $2.51

2.51 x 3 = 7.53

Three bags of popcorn would cost $7.53.

2) Old games unit price: 73.10/5 = 14.62

14.62 x 6 = 87.72

If they sold six games they would've made $87.72.

3) Lollipop unit price: 20.51/7 = %2.93

2.39 x 4 = 11.72

Four lollipops would cost $11.72

4) Hotdogs unit price: 82.86/3 = $27.42

Hamburgers unit price: 55.12/2 $27.56

Hotdogs have the lower unit price. $27.42 < $27.56

5) Packs of paper unit price: 12.74/7 = $1.82

1.82 x 2 = 3.64

Two packs of paper would cost $3.64

6) Pair of shoes unit price: 49.32/4 = $12.33

12.33 x 6 = $73.98

Six pairs of shoes would cost $73.98

7) Brand A unit price: 71.28/6 = $11.88

Brand B unit price: 59.15/5 = $11.83

Brand B has the cheaper price. $11.83 < $11.88

8) Pounds of seeds unit price: 37.62/2 = $18.81

18.81 x 6 = $112.86

Six pounds of seeds would cost $112.86

9) Red Grapes unit price: .82

Green Grapes unit price: .84

Green grapes are more expensive. .84 > .82

10) Book Store unit price : 21.69/3 = $7.23

Online unit price: 14.28/2 = $7.14

Online has a lower unit price. $7.14 < $7.23

Answer:

(10t + u)(10u + t) = 4,930

100tu + 10t^2 + 10u^2 + tu = 4,930

101tu + 10t^2 + 10u^2 = 4,930

10t^2 + (101u)t + (10u^2 - 4,930) = 0

(101u)^2 - 4(10)(10u^2 - 4,930)

= 10,201u^2 - 400u^2 + 197,200

= 9,801u^2 + 197,200

We see that u = 5 gives 442,225.

√442,225 = 665

(10t + 5)(50 + t) = 4,930

500t + 10t^2 + 250 + 5t = 4,930

10t^2 + 505t - 4,680 = 0

2t^2 + 101t - 936 = 0

t = (-101 + √(101^2 - 4(2)(-936)))/(2×2)

= (-101 + √17,689)/4

= (-101 + 133)/4 = 32/4 = 8

So the numbers are 58 and 85.

58 + 85 = 143