Find y I need help with this question

Answer:

251.64 I think it's correct but im not 100% sure

The value of pH for a sample of grape juice would be 4.4.

Given that,

A grape juice sample has a concentration of hydroxide ions of \(1.4 \times10^{-10} m\)

Now, The hydroxyl ion concentration in grape juice is, \(1.4 \times10^{-10} m\).

Hence, the value of pOH will be;

\(pOH = - log[1.4 \times10^{-10} ]\)

\(pOH = 9.6\)

Now the value of pH will be;

\(pH = 14 - pOH\)

\(pH = 14 - 9.6\)

\(pH = 4.4\)

Rounded to the nearest tenth.

Therefore, the value of pH is 4.4

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The grape juice sample has a hydroxide ion concentration of 1.4 x 10−10 m. After calculating for the hydronium ion concentration, we use the formula pH = -log [H3O+] to determine that the pH of the sample is approximately 4.2.

The subject of your question pertains to chemistry, specifically relating to the concept of pH and its calculation from the hydroxide ion concentration. As the sample of grape juice you mentioned has a hydroxide ion concentration of 1.4 x 10−10 m, we first need to find the concentration of hydronium ions. This can be determined using Kw (the ion product of water) which equals [H3O+][OH-] = 1.0 x 10-14 at 25°C. Given your hydroxide ion concentration, we have [H3O+] = Kw / [OH-], so [H3O+] = (1.0 x 10^-14) / (1.4 x 10^-10) = 7.14 x 10^-5 M.

Now, we can calculate the pH using the formula pH = -log [H3O+]. Substituting the value of [H3O+] into the equation gives pH = -log(7.14 x 10^-5) = 4.15. Rounded to the nearest tenth, this results in a pH value of 4.2 for your grape juice sample.

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The solution to the inequality is:

x ∈ (-∞, -21].

The correct option is F.

To solve the given inequality, we'll first simplify the expression:

23 < 3x - 3 ≤ -66

To simplify the inequality,

23 < 3x - 3 ≤ -66

Adding 3 to all parts of the inequality:

23 + 3 < 3x - 3 + 3 ≤ -66 + 3

Simplifying:

26 < 3x ≤ -63

Next, divide all parts of the inequality by 3:

26/3 < 3x/3 ≤ -63/3

Simplifying:

8.67 < x ≤ -21

Therefore, the solution to the inequality is:

x ∈ (-∞, -21]

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Answer: 20,532

Step-by-step explanation:

17,400(.02)=348

348(9)=3132

17,400+3132=20,532

Answer:

Step-by-step explanation:

This is an exponential growth function of the form:

\(y=ab^x\) where a is the initial population and b is the growth rate. This could also be written as

\(y=a(1+r)^x\) which is a bit more accurate. We'll use that one. r is the percent growth: 2% for us.

Filling in the formula:

\(y=17400(1+.02)^x\) and then simplifying:

\(y=17400(1.02)^x\)

That's the model for this population. Filling in any number of years for x will give you the population y. Our time is 9 years:

\(y=17400(1.02)^9\)

Take care of the exponents first, giving us:

\(y=17400(1.195092569)\) and then multiply to get

y = 20,794.6 or 20,794 people (since you can't have 6/10 of a person)

Answer:

75

Step-by-step explanation:

Answer:

Work the problem backward

Step-by-step explanation:

instead of 10-x=25 do 25-10 = x So yeah that should give you the variable X

Answer:

-15

Step-by-step explanation:

10-x=25

take away 10 from both sides of the equation.

-x = 15

divide by - (-1) to get x

x = -15

Answer:

35.7 km and 248.3 °

Step-by-step explanation:

I will attach the diagram to an image to make it easier to understand.

We will use the formula corresponding to the law of cosine

y² = 42² + 28² - (2 * 42 * 25 * cos 58 °)

y² = 2389 - 1112.83 = 1276.17

y = √1276.17

y = 35.72 km

Now, to calculate the surveyor's bearing from her base camp we must use the sine law:

[(Sin 58 °) / y] = [(Sin A) / 42]

Without A = (42 * without 58 °) /35.72

A = sin⁻¹ (0.9971)

A = 85.7 °

Bearing of the surveyor from the base camp = 270 ° - (85.7 ° - 64 °) = 248.3 °

Answer:

x=8

Step-by-step explanation:

x+2=10

Put two on the other side, right next to 10. Change the addition sign to subtraction sign. And then, it turns into, x=10-2.

Solve that and then you get x=8.

Hope this helped! :)

Answer: 4:18

Work:

2:9

2 inch:9 feet

2 · 9 = 18

2 · 2 = 4

4 inch:18 feet

Juliette's tax situation will depend on the specifics of her income and expenses for the year.

Based on the information provided in Chapter 9 TRP 9-1, we can determine that Juliette White is a head of household taxpayer with a dependent daughter named Sabrina. She works at a law firm and attends school at Reno Community College in the evenings. Juliette's mother watches Sabrina after school and in the evenings at no charge.

It is assumed that Juliette does not wish to contribute to the Presidential Election Fund and that she did not acquire any financial interest in any virtual currency during the year.

To file her taxes, Juliette will need to gather her income information from her job at the law firm and any financial aid or scholarships she received for attending RCC. She will also need to provide information on any other income sources she may have, such as interest earned on savings accounts or investment income.

As a head of household taxpayer, Juliette may be eligible for certain tax credits and deductions, such as the Child Tax Credit or the Earned Income Tax Credit. She will also need to provide information on any deductions she is eligible for, such as student loan interest or tuition and fees paid for attending RCC.

Overall, It is important that she accurately reports all of her income and deductions to ensure that she pays the correct amount of taxes and avoids any penalties or fines.

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Answer:

its 2/3 i think

Step-by-step explanation:

South Florida Water Management

The South Florida Water Management District is a regional governmental agency that manages the water resources in the southern half of the state, covering 16 counties from Orlando to the Florida Keys and serving a population of 9 million residents.

Water management is the control and movement of water resources to minimize damage to life and property and to maximize efficient beneficial use. Good water management of dams and levees reduces the risk of harm due to flooding.

Water management is the activity of planning, developing, distributing and optimum use of water resources under defined water polices and regulations.

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Answer:

r = - 2

Step-by-step explanation:

Use the slope formula to find m then equate to - 1

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)

with (x₁, y₁ ) = (6, r) and (x₂, y₂ ) = (9, - 5)

m = \(\frac{-5-r}{9-6}\) = \(\frac{-5-r}{3}\)  = - 1 ( multiply both sides by 3 )

- 5 - r = - 3 ( add 5 to both sides )

- r = 2 ( multiply both sides by - 1 )

r = - 2

Answer:

b = 6j

Step-by-step explanation:

b (number of biscuits) = 6j (6 biscuits per box)

Answer:

Step-by-step explanation:

a)3*4*2*b = 24b

Multiply the numerals and then the variables.When multiply variables, add the exponents and only same variables can be multiplied

b) c⁵ *c = c⁵⁺¹ = c⁶

c) 2y⁴ *5y³ = 2*5 * y⁴⁺³ = 10y⁷

Answer:

Step-by-step explanation:

The answer is 4

Answer:

113.04

Step-by-step explanation:

The required measurement is closest to the area of the toy is \(113.04\ inches^{2}\)

Given that,

Deon is playing fetch with his dog with a toy that is shaped like a circle,

The circumference of the sculpture is 12π inches.

We have to determine,

Which measurement is closest to the area of the toy in square inches.

According to the question,

Circumference of the circle = \(2\pi r\)

Where, circumference = \(12\pi\)

Then,

\(12\pi =2\pi r \\\\r = \dfrac{12\pi }{2\pi }\\\\r = 6\ inches\)

Therefore,

Deon is playing fetch with his dog with a toy that is shaped like a circle.

Area of the circle = \(\pi r^{2}\)

Where, r = 6inches

Then,

Area of the circle is given by,

\(= \pi r ^{2}\\\\= 3.14 \times (6)^{2}\\\\= 3.14 \times 36\\\\= 113.04\ inches^{2}\)

Hence, The required measurement is closest to the area of the toy is \(113.04\ inches^{2}\).

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Answers:

C. 128

E. 200

Explanation:

We have two options, there are 160 students in fifth grade or there are 160 students in sixth grade

If there are 160 students in fifth grade, we can formulate the following proportion:

Where x is the total for the other grade (sixth grade). So, solving for x, we get:

So, one of the answers is 200

On the other hand, if there are 160 students in sixth grade, the proportion is equal to:

Where y is the total for the other grade (fifth grade). So, solving for y, we get:

So, the other answer is 128

Therefore, the answers are C. 128 and E. 200

Answer:

6cm produces the largest mosquito

Step-by-step explanation:

The question has missing details.

From the complete question, the function is:

\(g(x) = 12x-x^2\)

Required

Which area of rainfall produces the most mosquito

This implies that, we calculate the maximum of the function.

This is calculated as:

\(Max = -\frac{b}{2a}\)

We have:

\(g(x) = 12x-x^2\)

Rewrite as:

\(g(x) = -x^2 + 12x + 0\)

From the above:

\(a= -1\)

\(b = 12\)

\(c = 0\)

So, we have:

\(Max = -\frac{b}{2a}\)

\(Max = -\frac{12}{2 * -1}\)

\(Max = \frac{12}{2}\)

\(Max = 6\)

This implies that:

\(x = 6\) ---- the maximum

When rainfall is at 6cm, there is a maximum number of mosquitoes

The maximum is then calculated as:

\(g(x) = 12x-x^2\)

\(g(6) = 12 * 6 - 6^2\)

\(g(6) = 72 - 36\)

\(g(6) = 36\)

The maximum number of mosquito is 36 million

To order the functions from the least rate of change to the greatest rate of change, we need to compare the given functions based on their rate of change.

The rate of change refers to how much the function's output (y-value) changes for a unit change in the input (x-value). From the information provided, we can observe the following:

- f(x) is not given.

- h(x) is a linear function, and its rate of change is constant. However, the function h(x) is not provided, so we cannot determine its rate of change.

- g(x) is given as g(7) = 21 - 7. By evaluating this expression, we find that g(7) = 14.

Since we cannot determine the rate of change for f(x) and h(x) with the given information, we can only compare the rate of change for g(x).

The rate of change for g(x) can be determined by calculating the difference in y-values divided by the difference in x-values. Here, we can use the given values to find the rate of change for g(x):

Rate of change for g(x) = (change in y) / (change in x) = (21 - 7) / (7 - 4) = 14 / 3 ≈ 4.67

Since we only have information about the rate of change for g(x) and cannot determine the rate of change for f(x) and h(x), we cannot directly order the functions from least to greatest rate of change.

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Answer:

Step-by-step explanation:

A kite is a quadrilateral made up of two isosceles triangles. A kite does not have any parallel side, but has two pairs of equal adjacent sides. All four sides are not congruent, only two pairs of consecutive sides are congruent.

The vertices of a kite are right angles. The diagonals bisect each other at right angles ( that is they are perpendicular). Therefore the following are true:

1) two pairs of consecutive sides are congruent

2) The diagonals are perpendicular

3) The diagonals bisect each other.

Point A= (3,6), B = (5,0), C= (-2,-4) D = (-3,4)

\(AB=\sqrt{(0-6)^2+(5-3)^2}=\sqrt{40} \\AD=\sqrt{(4-2)^2+(-3-3)^2}=\sqrt{40}\\ BC=\sqrt{(-4-0)^2+(-2-5)^2}=\sqrt{65}\\ DC=\sqrt{(4-(-4)^2)+(-3-(-2))^2}=\sqrt{65}\)

AB=AD, BC = BC.

This is a kite since two pairs of consecutive sides are congruent

The volume of the triangular prism is 480 cubic centimeters (cm³).

To calculate the volume of a triangular prism, you need to multiply the area of the triangular base by the height of the prism.

First, let's find the area of the triangular base. The base of the triangle is given as 8 cm, and the height of the triangle is 12 cm. Therefore, the area of the triangular base is:

Area = (base * height) / 2

= (8 cm * 12 cm) / 2

= 96 cm²

Now, multiply the area of the base by the length of the prism (which is 5 cm) to find the volume:

Volume = Area of base * length

= 96 cm² * 5 cm

= 480 cm³

Therefore, the volume of the triangular prism is 480 cubic centimeters (cm³).

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Answer:

No.

Step-by-step explanation:

Let's first and try to isolate x.

-2x < 5

(Divide by -2)

x > -5/2 ( < changes to > b/c it was divided by a negative)

x > -2.5

Since x is all values greater than -2.5, -6 is not within those bounds.

Thus, -6 is not a solution to the inequality.

Hope that helps!

Answer:

This is the answer i hope

We have to find the area of rectangle or triangle if triangle

Equation =1/2*length*Breadth

That is 1/2*13*8

=52

Answer:

104 sq. ft.

Step-by-step explanation:

Add the to heights and then multiply your base times height:

6+7=13

13x8= 104

Answer:

hi  o whae your  ayt fk hbod

Step-by-step explanation:

The student has to plug y=2x+4 into 3x+y=9 to solve for the system of equations

Answer:

Step-by-step explanation:

The friend solved

Answer:

300.00$

50$ per month

6 months

50x6

Answer:

paningkamot dong HAHAHAHAHHA