Find the area of a polygon

By using concepts of logarithms and powers, the concentration of hydrogen ions in a volume of a liter of a sports drink with a pH of 2.5.

Logarithms are trascendental equations, that is, expression that cannot be described in terms of algebraic expressions. In this question we need to solve for the hydrogen ion concentration:

pH = log (1/[H⁺])

[tex]10^{pH} = \frac{1}{[H^{+}]}[/tex]

[tex][H^{+}] = 10^{-pH}[/tex]

[tex][H^{+}] = 10^{-2.5}[/tex]

[H⁺] ≈ 3.163 × 10⁻³

By using concepts of logarithms and powers, the concentration of hydrogen ions in a volume of a liter of a sports drink with a pH of 2.5.

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Answer:

D

Step-by-step explanation:

when x = 0, y = 40

therefore you can pick either A or D only.

while x increases, y decreases, that's negative relation

so, answer is D

Answer:

Option D

Step-by-step explanation:

y = mx + b

b is the y - intercept (when x = 0):

this graph doesn't show any negative values on the axis so options B and C can't be true since it they have - 40 when its positive 40

y = mx + 40

The dot association is going downwards, the y values are getting smaller

making this a negative association leaving on ly option d true

Answer:

explanation and answer

1. Area of a triangle= 1/2×base.height

=1/2.14.10

=70

2. Area of a trapezium=(base 1+base 2/2)×height

= (3+7/2)×4

=20

Answer:

5 and  13 are prime numbers

Step-by-step explanation:

Answer:  5, 13,

Step-by-step explanation:

Answer:

-3 <= x < 5

Step-by-step explanation:

Because x is less than 5, we put a less than sign. And x is greater than or equal to -3, so we have to put that specific sign.

Hey there!

Assuming you meant….

(0.2)^3 * (0.3)^4

= 0.2^3 * 0.3^4

= 0.2 * 0.2 * 0.2 * 0.3 * 0.3 * 0.3 * 0.3

= 0.04 * 0.2 * 0.09 * 0.09

= 0.008 * 0.0081

= 0.0000648

≈ 0.000065

Therefore, your answer should be:

0.0000648

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Step-by-step explanation:

[tex] \tt{}(0.2 {)}^{3} \times (0.3 {)}^{4} [/tex]

[tex]\tt{}0.3 \times 0.06 ^{3} [/tex]

[tex]\tt{} \frac{3}{10} \times ( \frac{3}{50} {)}^{3} [/tex]

[tex]\tt{} \frac{3}{10} \times \frac{ {3}^{3} }{ {50}^{3} } [/tex]

[tex]\tt{} \frac{ {3}^{4} }{10 \times 50 ^3 } [/tex]

[tex]\tt{} \frac{81}{10 \times 5 {0}^{3} } [/tex]

[tex]\tt{}6.48[/tex]

Answer:

B

Step-by-step explanation:

Since A is a positive number then the function must open up and since it is positive it also must have a maximum

Answer:

B

Step-by-step explanation:

it's the one that makes sense in my opinion if it's not correct I'm sorry :(

Answer:

see the attachment photo!

Answer:

9

Step-by-step explanation:

9 × 9 = 81

81 + 40 = 121

121 is the amount of money you want so you just have to mow 9 lawns to get your exact amount of money you need.

Answer: Area = 112 Perimeter = 44

Step-by-step explanation:

Area = length × width = 8× 14 = 112

Perimeter = 2L + 2B = (2×8) +(2×14)

Perimeter = 16 + 28 = 44

Answer:

the first one is a lie

Step-by-step explanation:

caf is more 45 degrees than 25

Answer:

x=2

Step-by-step explanation:

[tex]2^{3x+1}+52=180^o[/tex]

[tex]2^{3x+1}+52-52=180-52[/tex]

[tex]2^{3x+1}=128[/tex]

[tex]3x+1=7[/tex]

[tex]x=2[/tex]

Answer:

[tex]b^{2} \sqrt{30b}[/tex]

Step-by-step explanation:

Answer:

y is -16

Step-by-step explanation:

Fory =3x -1

Substitute x= -5

y=3(-5) -1

3(-5) -1= -16

y= -16

Answer:

Step-by-step explanation:

if x = 6 and y = 4

then

20xy - 10x² = 20×(6)×(4)-10×(6^2) = 120

Therefore,

Mary has 120 sweets

……………………………………

if x = 6 and y = 4

then

5x = 5 × (6) = 30

…………………………

120 ÷ 30 = 4

Then 4 sweets per friend.

Answer:

the correct answer is 2430

Answer:

Step-by-step explanation:

since 2 sides are equal i.e. 6=6, It is an isosceles triangle

56+x+x=180

2x=180-56

x=62°

Please mark it as brainliest

Have a good day!

Answer:

[tex]\sf h(x) = y -4[/tex]

The daffodils flower Pate needs is 8, total number of flower when rose is 2, is 18 and the carnations to be needed for decoration is 15.

Algebraic expression are the expression which consist the variables, coefficients of variables and constants.

The algebraic expression are used represent the general problem in the mathematical way to solve them.

Pete is making decorations for a dinner party. The instructions tell him to use 9 flowers for a medium-sized decoration which has 2 lilies, 1 rose, 3 carnations, 2 daffodils and 1 iris.

The ratio of daffodils to total flower is,

n=2/9.

To make a large decoration, Pete uses 36 flowers. Let suppose the daffodils flower he needs for this is x. Thus,

x=36*(2/9)

x=4*2

x=8

The rose flower is increased from 1 to 2. Thus, the total number of flower also be twice for decoration.

Flower=2*9

Flower=18

Now Pete uses 10 lilies instead of 2 which is 5 times the medium-sized decoration. Thus, the carnations to be needed is,

Carnations=3*5

Carnations=15

Hence, the daffodils flower Pate needs is 8, total number of flower when rose is 2, is 18 and the carnations to be needed for decoration is 15.

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Using proportions, it is found that the average waste produced by each plant on a monthly basis is of 0.8 tons per month.

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, there is a period of 60 x 12 = 720 months, with 104 plants, and 60,000 tons of waste were produced, hence the average is given by:

A = 60000/(720 x 104) = 0.8 tons per month.

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Answer:

12^2 + 15^2 = 18^2

Step-by-step explanation:

If we have 3 sides of a triangle we can use the Pythagorean theorem to determine if the triangle is a right triangle

a^2 + b^2 = c^2

12^2 + 15^2 = 18^2

If this is true, then the triangle is a right triangle

Answer:

b

Step-by-step explanation:

Answer:

1) 12/13 or 0.9998

2) 27°

3) a. yes b. no c. yes d. no

4) ? a) b) e) d)

5) ? a. true b. true

Step-by-step explanation:

1. cos= adjacent/hypotenuse

2. sin (63°)= cos (27°)

3. sin = opposite/hypotenuse cos= adjacent/hypotenuse tan= opposite/adjacent

4. not so sure about the answer

5. not so sure about the answer

Answer:

4a) $26.5 because if x represents how many feet then the slope would be the price of one glulam beam.

4b) $63,600

Step-by-step explanation:

To find the answer to 4b we need to alter the equation we were given. Since x represents how many feet we buy we put 2400 in place of x.

y = 26.5 x 2,400

and we simply solve from here

y = 63,600

So, 63,600 is how much we would be spending for 2400 feet of beams. Hope this helps!!

The sum of the finite arithmetic series of  26 + 29 + 32 + 35 + 38 + 41 + 44 is 245. Arithmetic series is a sequence of number such that the difference between any term and the previous term is a constant number. When we sum a finite number of terms in the arithmetic series, we get the finite arithmetic series.