What percent of 40 is 70

Answer:

45°

Step-by-step explanation:

AB and BC are congruent which mean ∠BAC and ∠BCA are congruent.

We already know ∠ABC is 90°.

We cans set up the equation with what is given.

180 = 90 + 2c

Subtract 90 from both sides.

90 = 2c

Divide both sides by 2

45 = C

So angle C is 45°

The amount the PTA at Greenville High School raised this year is $30,023.

The percentages are also called the centesimal ratio, and are usually accompanied by the symbol “%”, which reads “percent”.

The fact that the PTA at Greenville High School raises 30% less funds this year compared to last year means that the amount raised this year is 70% of last year's funds, in essence, 70% multiplied by last year's:

Find out more about percentages on: brainly.com/question/18706090

#SPJ1

Answer: (A) -24x1/4  (B) Negative multiplied by a positive equals a negative

Step-by-step explanation:

The question says below sea level, so the whole number is negative. we don't need city A its a distraction so city C is multiple by city D. why do we multiply because the word of means multiple there for the expression is

write the product into one single fraction

-24x1

   4        canceled the 4 in the fraction -24x1

                                                                      4

-6x1    any expression divided by one remains the same -6x1

  1

solution

x1=0

Answer:

Box of oat:

24*5*25(all in cm)=3000 cm3

cereal:

26*4*2.8=291.2 cm3

oat is grater by 2708.8

Step-by-step explanation:

28mm was changed to 2.8 cm

In the sentence 52 = 15∙3 + 7, 7 is equal to 36.7

In mathematics, equality is a relationship that states that two quantities have the same value or that two mathematical expressions represent the same mathematical object.

Someone or something that is equal to another has the same quantity, value, or rights as that other thing. One cup and eight ounces are equivalent, for instance. Equal pay for equal work performed by men and women is an illustration of equality.

If both operands have the same value, the equal-to operator (==) returns true; otherwise, it returns false. If the operands do not have the same value, the not-equal-to operator (!=) returns true; otherwise, it returns false.

Learn more about equal here

https://brainly.com/question/25716982

#SPJ9

Answer:

∠ 10 = 86°

Step-by-step explanation:

∠ 7 and ∠ 10 are same- side interior angles and sum to 180° , that is

∠ 7 + ∠ 10 = 180°

94° + ∠ 10 = 180° ( subtract 94° from both sides )

∠ 10 = 86°

Answer:

4x + 5y - 2

Step-by-step explanation:

An algebraic expression in mathematics is an expression which is made up of variables and constants, along with algebraic operations (addition, subtraction, etc.). Expressions are made up of terms.

The probability that a randomly selection of 20 toasters for testing, no more than one is defective is: 0.9401

To solve this exercise the formula and the procedure that we have to use for binomial distribution is:

Where:

Information about the problem:

Applying the binomial distribution formula, we get:

P(x) = n! /[x! *(n-x)!] * pˣ * (1 - p)ⁿ⁻ˣ

P(x) = 20! /[x! *(20-x)!] * 0.02ˣ * (1 - 0.02)²⁰⁻ˣ

Using the P formula to calculate the probability that no more than one of these toasters is defective, we have:

P = P(0) + P(1)

P(0) = 20! /[0! *(20-0)!] * 0.02⁰ * (1 - 0.02)²⁰⁻⁰

P(0) = 20! /(0!*20!) * 0.02⁰ * (0.98)²⁰

P(0) = 1/0! * 1 * 0.6676

P(0) = 1/1 * 1 * 0.6676

P(0) = 0.6676

P(1) = 20! /[1! *(20-1)!] * 0.02¹ * (1 - 0.02)²⁰⁻¹

P(1) = 20! /(1!*19!) * 0.02¹ * (0.98)¹⁹

P(1) = (20*19!) / (1!*19!) * 0.02¹ * (0.98)¹⁹

P(1) = 20/1! * 0.02 * 0.6812

P(1) = 20 * 0.02 * 0.6812

P(1) = 0.2725

P = P(0) + P(1)

P =  0.6676 + 0.2725

P =  0.9401

Probability is the function that measures the chances that an outcome of a random event will be as expected. In this way you can measure how likely it is that an event will happen.

Learn more about probability at: brainly.com/question/251701

#SPJ4

For the given statement conclusion it was drawn using the law of syllogism.

Option A is our correct answer

The Law of Syllogism states that,

If the following two statements are true:

- If p, then q.

- If q, then r.

Then the third statement is true:

- If p, then r.

We have,

p - If you do the unit review, q - you will do well on the test.

q - If you do well on the test, r - then you will do well in the course.

Therefore, p - if you do the unit review, r - then you will do well in the course.

This is in the form of:

- If p, then q.

- If q, then r.

Then the third statement is true:

- If p, then r.

Thus this conclusion was drawn using the law of syllogism.

Learn more about the law of syllogism here:

https://brainly.com/question/24760664

#SPJ1

Answer: A and B

-3^4 = -3 × -3 × -3 × -3 = 81

When dealing with multiplying all negative numbers, the result is going to be positive.

-3^2 = -3 × -3 = 9

Step-by-step explanation:

Divide

81/9 = 9

Find an equivalent expression whose product is |+9|

(-3)^2 = -3 × -3 = 9

(-3)^4 = -3 × -3 × -3 × -3 = 81

81/9 = 9

A is correct, so we must find the next correct answer.

(-3)^6 = -3 × -3 × -3 × -3 × -3 × -3 = 729

(-3)^4 = -3 × -3 × -3 × -3 = 81

729/81 = 9

B is correct. Thus,

[tex]\frac{(-3)^4}{(-3)^2} = B)\frac{(-3)^6}{(-3)^4} = A)\frac{(-3)^2}{(-3)^4}[/tex]

Hope this helps, and have a great day.

The Volume of the given Hemisphere is  1071.8 cm³ rounded to 1 decimal place whose radius is 8cm

The Volume of the sphere  is given by the formula 4/3 πr³

The volume of hemisphere is half of sphere

So, The volume of hemisphere is 2/3 πr³

From the given figure it is clear that the radius of the hemisphere is 8cm

Here, we will use the value of π as 3.14 and not 22/7

So, Substituting the values in the formula of Volume of hemisphere

the Volume of hemisphere =2/3 π (8)³

                                      =2/ 3× 3.14 × 512

                                     = 1071.7867 cm³

Hence, the Volume of hemisphere 1071.7867 cm² or 1071.8 cm² rounded to 1 decimal place whose radius is 8cm

To know more about Volume of hemisphere - https://brainly.com/question/23178590

#SPJ1

Answer:

(2)(6)+3

?

=

15

15=15

True

Step-by-step explanation:

help

An elevator descends at a constant speed, the change in elevation after 19 seconds will be an elevation of distance

d= 19v where acceleration remains constant

Generally, An angle is created when a horizontal line and a line of sight are placed side by side.

In conclusion, This angle is known as the angle of elevation. If the line of sight rises above the horizontal line, the angle that is generated is known as an angle of elevation.

Read more about elevation

https://brainly.com/question/481548

#SPJ1

Answer:

B/a

Step-by-step explanation:

Because 1/a is still the same as a to power negative one and so 1/b. 1/a divided by 1/b is b/a

Answer:

6

Step-by-step explanation:

-1 is the extraneous solution

To know the value of x first we need to remove the square root of the equation

[tex]\sqrt \sqrt{x +25}[/tex]  = [tex]\sqrt{x + 5}[/tex]

So to get the value we have to square both sides of the equation

[tex](\sqrt\sqrt{x +25})^{2}[/tex] = [tex](\sqrt{x + 5} )^{2}[/tex]

We get

[tex]\sqrt{x +25}[/tex]= x + 5

Now again we have to square both sides of the equation

x + 25 = [tex](x + 5)^{2}[/tex]

x + 25 =[tex]x^{2}[/tex] + 10x + 25( As we know [tex](a + b)^{2}[/tex]= [tex]a^{2}[/tex] + [tex]b^{2}[/tex] + 2ab )

[tex]x^{2}[/tex] + 9x = 0

x( x + 9) = 0

Therefore x = 0, -9

1 = [tex]\sqrt{-1}[/tex]

9 = [tex]\sqrt{81}[/tex]

The square root of 81 is 9 but the square root of -1 is an imaginary number

so the correct choice is " 9 is the solution of the equation " and -1 is the extraneous solution

To know more about the extraneous solutions refer to the link given below:

https://brainly.com/question/13198706

#SPJ4

The distance on the map that represents an actual distance of 4 kilometers is 3.2cm.

The actual number of kilometers that is represented by 5 centimeters on the map is 6.25 kilometers.

A scale drawing is a smaller version of a larger image. In this question, the map is a scale drawing of the city. The scale drawing is reduced using constant dimensions using a scale.

A scale gives the ratio of the length of the scale drawing to the actual diagram or object. In this question, every 4cm on the map represents 5km in the city.

The distance on the map = (4 x 4) / 5

16 / 5 = 3 1/5 cm = 3.2 cm

The actual distance = (5 x 5) / 4

= 25 / 4 = 6 1/4 = 6.25 kilometers

To learn more about scale drawings, please check: https://brainly.com/question/26388230

#SPJ1

The percentage of scores will fall between 85 and 115 is 68.26%

Given,

Scores on the Wechsler Adult Intelligence Scale (WAIS) are normally distributed with,

Mean = 100

Standard deviation = 15

We have to find the percentage of scores fall between 85 and 115.

That is,

P(85 < X < 115) = \ [tex]P[/tex] [tex](\frac{85-100}{15}[/tex]  <  [tex]\frac{x-mean}{standard deviation}[/tex]  < [tex]\frac{115-100}{15}[/tex][tex])[/tex]

= P(-1 < Z < 1)

= \P(Z < 1) - P(Z < -1)

= 0.8413 - 0.1587

\P(85 < X < 115) = 0.6826

The probability that a person would score between 85 and 115 is 0.6826

And, the percentage of scores will fall between 85 and 115 is 68.26%

Learn more about percentage of scores here: https://brainly.com/question/10672120

#SPJ1

[tex]\displaystyle\\Answer:\ C. \ f=\sqrt{\frac{B}{4} }[/tex]

Step-by-step explanation:

After evaluating the expression x³ . x⁵, we get the result as 256.

We are given an expression:

x³ . x⁵

We can use the properties of exponents that if the base is same and two numbers are multiplied, then the powers get added.

So, the expression will become:

= x ³⁺⁵

Simplifying the expression, we get that:

= x⁸

Now, we need to evaluate the expression at x = 2

Put x = 2 in the expression, we get that:

= 2⁸

Evaluating it, we get that:

= 256

Therefore, after evaluating the expression x³ . x⁵, we get the result as 256.

Learn more about expressions here:

https://brainly.com/question/723406

#SPJ4

In 12144 ways the students can get first, second, or third place.

The permutation system is used to locate the special range of preparations that may be shaped through taking r matters from the n to be had matters. Permutations are beneficial to shape distinctive words, quantity preparations, seating preparations, and for al. of the conditions related to special preparations. As consistent with the permutation formula, the permutation of 'r' items taken from 'n' items is identical to the factorial of n divided through the factorial of distinction of n and r.

The formula for permutations is

nPr= n!/(n-r)!

From the given question let us consider,

n= 24    r=3

Now let us solve using formula

24P3= 24!/(24-3)!

=24*23*22*21......*2*1

=12144

Therefore there are 12144 ways.

To know more about Permutations visit:

brainly.com/question/1216161

#SPJ1

Since lines a and b have the same slope, then: the lines are parallel.

The slope of a line is the rise/run or change in y / change in x. When two lines lie parallel to each other, they will have equal slope value.

On the other hand, when two lines lie perpendicularly to each other, their slopes will be negative reciprocal.

For example, if a line has a slope of 2/3, the slope of the line that is parallel to it will be 2/3 also, while the slope of the line that is perpendicular to it will be -3/2.

Thus:

The slope of line a = 2/3

The slope of line b = 2/3

Therefore, since lines a and b have the same slope, then: the lines are parallel.

Learn more about the slope of a line on:

https://brainly.com/question/28086654

#SPJ1

Answer: the lines are parallel.

Answer:

Hello,

Step-by-step explanation:

[tex]n=\overline{EDCBA}\\\\A=3*B\ My\ ones\ digit\ is\ three\ times\ greater\ than\ my\ tens\ digit.\\E=3+B\ My\ ten\ thousands\ digit\ is\ 3\ more\ than\ my\ tens\ digit.\\C=2*E\ My\ hundreds\ digit\ is\ twice\ my\ ten\ thousands\ digit. \\D=C-1\ My\ thousand\ digit\ is\ one\ less\ than\ my\ hundreds\ digit.\\\\A=3*B\\E=3+B\\C=2*E\\D=C-1\\\\\begin{array}{|c|c|c|c|c|}A&B&C&D&E\\--&--&--&--&--\\0&0&6&5&3\\3&1&8&7&4\\6&2&X&X&5\\9&3&X&X&6\\X&4&X&X&X\\--&--&--&--&--\\\end{array}\\[/tex]

[tex]\\\\Numbers\ are\ 35600\ or\ 47813.[/tex]

The function that represents the value after x years of a new delivery van that costs $ 25,000 and depreciates 15 % each year is option (C) y = 25000(0.85)ˣ.

Consider the compound interest formula:

y = P(1 + r/n)ⁿˣ

y here stands for the car's potential value.

P represents the value of the new car.

r is a measure of how quickly a car's value declines.

The number n indicates how frequently the car's value depreciates each year.

x represents the number of years.

Given P = 25000

r = -15% = -0.15 (Since the value of the car depreciates)

n = 1

x = x

Using the given values, we get the function as,

y = 25000(1 + (-0.15)/1)ˣ

⇒ y = 25000(1 - 0.15)ˣ

⇒ y = 25000(0.85)ˣ

Therefore, the function that represents the value after x years of a new delivery van that costs $ 25,000 and depreciates 15 % each year is option (C) y = 25000(0.85)ˣ.

Learn more about function here:

https://brainly.com/question/25638609

#SPJ4

The lower and upper bounds for the following to the given degrees of accuracy are: a- 64 mins (63.5 ≤ 64 < 64.5) c- 30m/s (27.5 ≤ 30 < 32.5) b- 20g (15 ≤ 20 < 25) d-7500mm (7450 ≤ 7500 < 7550)

The upper and lower bounds can be found by dividing the degrees of accuracy by 2 and then subtracting and adding with the value to give the lower and upper bounds respectively.

For a- 64 mins (nearest 1 min)

As the degree of accuracy is to the nearest 1 min;

1 min ÷ 2 = 0.5 min

Upper bound = 64 + 0.5 = 64.5 min

Lower bound = 64 - 0.5 = 63.5 min

For c- 30m/s (nearest 5m/s)

5m/s ÷ 2 = 2.5 m/s

Upper bound = 30 + 2.5 = 32.5 m/s

Lower bound = 30 - 2.5 = 27.5 m/s

For b- 20g (nearest 10g)

10g ÷ 2 = 5

Upper bound = 20 + 5 = 25g

Lower bound = 20 - 5 = 20g

For d- 7500(nearest 100mm)

100mm ÷ 2 = 50mm

Upper bound = 7500 + 50 = 7550mm

Lower bound = 7500 - 50 = 7450mm

To learn more about upper and lower bounds, click here:

https://brainly.com/question/1089252

#SPJ4

The value of given expression for x=0 is 1, x=-2 is 0.44 and x=2 is 2.25.

Given the expression is (3/2)ˣ.

Firstly, we will simplify the given expression (3/2)ˣ for x=0.

Substitute the value x=0 in given expression, we get

(3/2)ˣ =(3/2)⁰

As we know that something raise to power zero is 1.

So, we get

(3/2)ˣ =1

Now, we will simplify the given expression (3/2)ˣ for x=-2.

Substitute the value x=2 in given expression, we get

(3/2)ˣ =(3/2)²

Now, we will square the expression to simplify it, we get

(3/2)ˣ =9/4

(3/2)ˣ =2.25

Furthermore, we will simplify the given expression for x=-2.

Substitute the value x=-2 in given expression, we get

(3/2)ˣ =(3/2)⁻²

Now, we will square the given expression, we get

(3/2)ˣ =(9/4)⁻¹

Further, we will divide it above expression by 1 to remove negative sign, w eget

(3/2)ˣ =1/(9/4)

(3/2)ˣ =4/9

(3/2)ˣ =0.44

Hence, the value of expression (3/2)ˣ  for x=0, 2 and -2 is 1, 2.25 and 0.44.

Learn more about the expression from here brainly.com/question/945593

#SPJ4

The Magnitude of all the vectors is the same.

As you know, a vector is an object with both Magnitude and direction. To find the size of a vector, we need to calculate the length of the vector. Variables such as velocity, distance, force, and momentum are vector variables. But velocity, mass, distance, volume, temperature, etc., is a scalar quantities. A vector has both Magnitude and direction, while a scalar has only one Magnitude.

The Magnitude of a vector is the length of the vector. The Magnitude value of vector a is represented by ∥a∥.

The formula for its Magnitude is given below for a two-dimensional vector a= (a1, a2).

More vector-related questions are below:

https://brainly.com/question/13322477?referrer=searchResults

#SPJ4