MATHEMATICS HIGH SCHOOL

Which expression forms an equation with the given expression?8 • 7 – 4 = ___________
(Points : 1)
(2 + 9) • 2
10 • 3 – 6
9 • 5 + 7
9(12 ÷ 2)

Answers

Answer 1
Answer:

Answer:

8 • 7 – 4 = 9 • 5 -  7.

Step-by-step explanation:

Given  : 8 • 7 – 4 = ___________

To find : Which expression forms an equation with the given expression.

Solution : We have given  8 • 7 – 4 = ___________

First we solve the product

56 - 4.

52

Now we will check the 9 • 5 + 7

Solve the product  45 + 7 =  52.

So, the   8 • 7 – 4 = 9 • 5 -  7

Therefore,  8 • 7 – 4 = 9 • 5 -  7.
Answer 2
Answer: The answer is 9*5+7
9*5=45 +7=52

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1. A polyhedron has 6 vertices and 9 edges. How many faces does it have? a. 3 b. 5 c. 7 d. 9 2. A polyhedron has 25 faces and 36 edges. How many vertices does it have? a. 11 b. 12 c. 13 d. 14

The quotient of four and e

Answers

The expression of 4e, that has the coefficient is 4

What are the Quotients?

Quotients are the number that is obtained by dividing one number by another number.

The Numbers constants, variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbol; which can also be used to indicate the logical syntax's order of operations and other features.

Dividend ÷ Divisor = Quotients

A coefficient is a number placed B4 another quantity for this case; that is the unknown(e).

The expression for the given situation is;

4e

Therefore , the coefficient is 4

Learn more about the quotient;

brainly.com/question/26913992

#SPJ2

Answer:

4e

A coefficient is a number placed b4 another quantity for this case that is the unknown(e).

Therefore the coefficient is 4

Step-by-step explanation:

Hope that this is helpful.

Have a great day.

What is the area of the composite figure?4 in
O (877 + 6) in.2
(817 + 12) in 2
(877 + 18) in 2
(81T + 24) in 2
3 in

Answers

Answer:

8π + 12 in²

Step-by-step explanation:

Just add the areas of the semicircle and the triangle.

$25;300%increse percent change

Answers


well and 300% increase means you multiply by 3 and then add the original number


in this case 300% of 25 is 75 and its an increase so 25+75=100

the answer is 100

A dairy farmer accidentally allowed some of his cows to graze in a pasture containing weeds that would contaminate the flavor of the milk from this herd. The farmer estimates that​ there's a a 9 9​% chance of a cow grazing on some of the flavorful weeds. ​(a) Under these​ conditions, what is the probability that none of the 16 16 animals in this herd ate the tasty​ weeds? ​(b) Does the Poisson model give a good estimate of the probability that no animal ate the​ weed?

Answers

Answer:

the required probability of is 0.1886

the approximate probability is 0.2052

Step-by-step explanation:

The farmer estimates that​ there's a a 9 9​% chance of a cow grazing on some of the flavorful weeds

i.e P = 9.9% = 0.099

Let assume that X is a description of how the cows are grazing on some of the flavorful weeds.

The probability density function of the binomial distribution is :

\mathbf{P(X=x)=(^n_x)_(p^x)(1-p)^(n-x)}

a)

To calculate that the probability that none of the 16  animals in this herd ate the tasty​ weeds.

\mathbf{P(X=0)=(^(16) _0){(0.099)^0}(1-0.099)^(16-0)}

= \mathbf{1*1*0.1886}

= 0.1886

Thus; the required probability of is 0.1886

b) To calculate the probability that no animal ate the weed.

By using Poisson approximation model:

\mathbf{P(X=0) = (e^(-(np))(np)^x)/(x!) }

\mathbf{P(X=0) = (e^(-(16*0.099))(16*0.099)^0)/(0!) }

\mathbf{P(X=0) =e^(-1.584)}

\mathbf{P(X=0) =1.5254*10^(-7)}

               = \mathbf{0.2052}

Hence; the approximate probability is 0.2052

which of the following statements is true? a) both the square root of 0.25 and -the square root of 16 are irrational. b) the square root of 0.25 is rational and -the square root of 16 is irrational c) both the square root of 0.25 and -the square root of 16 are rational d) the square root of 0.25 is irrational and -the square root of 16 is rational

Answers

Answer:

Option: C is the correct answer.

c) both the square root of 0.25 and -the square root of 16 are rational.

Step-by-step explanation:

Rational Number--

A number which could be expressed in the form of p/q where  p belongs to integers and q belongs to natural numbers.

and if it could not be expressed as one then the number is called a irrational number.

(1)

\sqrt{0.25}

Now, we can represent it as follows:

√(0.25)=\sqrt{(25)/(100)}\n\ni.e.\n\n√(0.25)=\sqrt{((\pm 5)/(10))^2}\n\ni.e.\n\n√(0.25)=\pm (5)/(10)=\pm (1)/(2)

Hence, the number could be expressed in the form of p/q

Hence, the number is a rational number.

2)

-√(16)

It could be represented as follows:

-√(16)=-√((\pm 4)^2)\n\ni.e.\n\n-√(16)=\pm 4

Hence, the number is a rational number.
The answer is C because the only time a square root is irrational is if it is a negative like -16 it is irrational because you can’t have 4^2=4*-4

Which of the following has a positive value? sec (2pi/3) tan (2pi/3) cos (2pi/3) csc (2pi/3)

Answers

Answer:  D) csc (2π/3)

Step-by-step explanation:

2π/3 is in Quadrant II

Quadrant II has a negative x-value and a positive y-value.

x-values are: cos & sec

y-values are: sin & csc

tan = y/x so will be negative in Quadrant II

A) sec = -

B) tan = -

C) cos = -

D) csc = +     this works!
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