There are 20 students in a class and 70% of these students passed their Biology test.
What number of these students passed their test? Round your answer to the nearest whole
number if necessary.

Answers

Answer 1

Answer:

The answer is 14 students.

Step-by-step explanation:

70% of 20 = 14


Related Questions

A system of equations is shown:
2x = -y + 6
--4x + 3y = 8
What is the solution to this system of equations?
0 (-1,-4)
O (1.4)
(4, 1)
(-4,-1)

Answers

[tex]\large\underline{\bf \red{Step \:by\: Step \:Explanation:}}[/tex]

Given two equations are :

2x = - y + 6.-4 x + 3y = 8 .

We may write them as ,

2x + y - 6 = 0 .................(i) 4x - 3y + 8 = 0 ...............(ii)

Multiplying equⁿ (i) by 2 :

⇒ 2(2x + y - 6 ) = 0.

4x + 2y - 12 = 0 .....................(iii) .

Subtract equ (ii) from equⁿ (iii) :-

⇒ 4x + 2y - 12 = 0

ㅤ- 4x + 3y - 8 = 0 [ Sign changes ]

__________________

⇒ 5y - 20 = 0.ㅤㅤㅤㅤㅤ

⇒ 5y = 20.

⇒ y = 20/5.

⇒ y = 4

Put this value in (i) to obtain x .

⇒ 2x + y - 6 = 0.

⇒ 2x +4 - 6 = 0.

⇒ 2x - 2 = 0.

⇒2x = 2 .

⇒ x = 2/2.

⇒ x = 1 .

Hence the value of x is 1 & y is 4.

[tex]\boxed{\purple{\bf\pink{\dag}\:Hence\:the\: correct\: option\:is\:[b]\:(1,4)}}[/tex]

Express 7.409 in word form.

Answers

seven and four hundred nine

2^4x4^4=2^4x2^n=2^12

Answers

Answer:

don''t knw

Step-by-step explanation:

Math To Do, i-Ready X G isabella belongs to a fitness club X + student/dashboard/home sabella belongs to a fitness club. She paid an initial fee of $50 when she joined and also pays $10 per month. Since becoming a member of the fitness club, Isabella has paid a total of $240. Use the drop-down menus to complete the statements about the length of time that Isabella has been a member of the fitness club. Click the arrows to choose an answer from each menu.

The equation Choose can be used to determine the value of the number of months Isabella has been a member of the fitness club. She has been a member of the fitness club for Choose months.​

Answers

Answer: 19 months

Step-by-step explanation:

given data:

amount paid initially when joining the club = $50.

monthly payments made = $10.

total amount paid since joining the club = $240.

Solution:

= 10X + 50 = 240

collect like terms

= 10X = 240 – 50

10X = 190

divide both sides by 10

10X/10 = 190/10

X = 19

isabella has been a member of the club for 19 months.

9+10....................................................................

Answers

Answer:

24234221111111111111111111111

Step-by-step explanation:

I need help with this question

Answers

Answer:

The answer is going to be option 1.

Step-by-step explanation:

The answer you get from multiply an number by itself is a perfect square.

Answer:

8×8 =8^2=64 (perfect square)

Step-by-step explanation:

64 is a perfect square because 8^2 =8×8 =64

Pwease help me wit this problem, tysmm

Answers

Answer:

yeah every time Charlie takes 30 dollars more than previous salary

how many inches of lumber are remaining?

Answers

Answer:

I can't really answer this question because there is no picture of actual question but 1 foot = 12 inches so for instance we could do 6 inches + 3 inches = 9 inches.      

Step-by-step explanation: How we would solve this problem is simple.

6 + 3 = 9  if you have to turn this into a fraction it would be 9/12 = (3/4).

Is 17/5 + square root of 64 greater than 8 + pi?

Answers

Answer:

I'm probably wrong 69??? Yea I'm definitely wrong

What is 4/15 / -3.4

Answers

Answer:

Factor the numerator and denominator and cancel the common facotors which would give you 0.07843137

2 ( 3x + 1 ) = x - 8

Answers

Answer:

x=-2

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

6x + 2 = x-8

6x - x = -8 -2

5x=-10

x=-2

Which shows associative property?
3(ab) = (3a)b
(3 + a) + b = 3 + (a + b)

Answers

Answer: the answer is the second one

Step-by-step explanation:

9514 1404 393

Answer:

3(ab) = (3a)b . . . associative property of multiplication(3 + a) + b = 3 + (a + b) . . . associative property of addition

Step-by-step explanation:

The "associative property" can apply to any number of operations. The ones we're usually concerned with are multiplication and addition.

Basically, the associative property says you can regroup elements that have the same operation being performed on them. Effectively, that regrouping lets you perform the sequence of operations in whatever order you may choose.

For multiplication, the associative property can be written:

  (ab)c = a(bc)

This form matches the first of the choices shown:

  3(ab) = (3a)b

__

For addition, the associative property can be written:

  (a+b)+c = a+(b+c)

This form matches the second of the choices shown:

  (3 + a) + b = 3 + (a + b)

__

If you must select one answer, you need to know which associative property you're talking about.

Harold balance in his savings account was $10,000. The savings account earns annual simple interest. At the end of 3 yeah, the balance of the account was $11,875. If Harold did not make additional deposits or withdrawals, what was the approximate annual interest rate on the savings account?​

Answers

Answer:

In the simplest of words, $1,000 at 1% interest per year would yield $1,010 at the end of the year. But that is simple interest, paid only on the principal. Money in savings accounts will earn compound interest, where the interest is calculated based on the principal and all accumulated interest.

Step-by-step explanation:

Determine if the sequence below is arithmetic or geometric and determine the common difference/ratio in simplest form
12,6,3

Answers

Answer:

The sequence is geometric

The common ratio is 0.5

Step-by-step explanation:

In the arithmetic sequence, there is a common difference between each two consecutive terms

In the geometric sequence, there is a common ratio between each two consecutive terms

Let us check the given sequence

∵ The first 3 terms are 12, 6, 3

∵ 6 - 12 = -6

∵ 3 - 6 = -3

∵ There is no common difference between the consecutive terms

The sequence is not an arithmetic sequence

∵ 6 ÷ 12 = 0.5

∵ 3 ÷ 6 = 0.5

∴ There is a common ratio between each two consecutive terms

The sequence is a geometric sequence

The common ratio is 0.5

Given sequence is geometric sequence and common ratio between consecutive term is  [tex]\frac{1}{2}[/tex] .

In Arithmetic sequence , common difference between consecutive terms should be equal.

In Geometric sequence, common ratio between consecutive terms should be equal.

Given sequence,     12, 6, 3, ...

  Since, common difference =  [tex]6-12\neq 3-6[/tex] , this is not arithmetic sequence.

Common ratio =     [tex]\frac{6}{12}=\frac{3}{6}=\frac{1}{2}[/tex]  Because common ratio is are equal. Thus, given sequence is geometric sequence.

Learn more about sequence here :

https://brainly.com/question/17648677

Determine whether the statement is true or false. If it is​ false, rewrite it as a true statement. When each data class has the same​ frequency, the distribution is symmetric. Choose the correct answer below.

a. The statement is true.
b. The statement is false. When each data class has the same​ frequency, the distribution is bimodal.
c. The statement is false. When each data class has the same​ frequency, the distribution is skewed left.
d. The statement is false. When each data class has the same​ frequency, the distribution is skewed right.

Answers

Answer:

A; the statement is true

Step-by-step explanation:

In this question, we are to select which of the options is correct according to the initial statement.

The statement is true.

If the data classes have same frequency, then the distribution is said to be symmetrical in nature.

What is meant by being symmetrical in this case is that the data classes are skewed left as far as they are skewed right from a given center point.

Evaluate and reduce:
-4.9
Enter the number that belongs in the
green box,

Answers

Answer:

Step-by-step explanation:

-4/7 * 9

The dot there resembles multiplication sign.

-4/7 * 9/1 (9 = 9/1 because 9 divided by 1 = 9)

=> -(4 * 9) / (9 * 1)

=> -36 / 9

=> -4

If my answer helped, kindly mark me as the brainliest!!

Thanks!!

solve for x: x²/x-3=x+2/2x-5​

Answers

Answer:

x=2

Step-by-step explanation:

x2

x

+−3=x+x+−5

Multiply all terms by x and cancel:

x2+−3x=xx+xx+−5x

x2−3x=2x2−5x(Simplify both sides of the equation)

x2−3x−(2x2−5x)=2x2−5x−(2x2−5x)(Subtract 2x^2-5x from both sides)

−x2+2x=0

x(−x+2)=0(Factor left side of equation)

x=0 or −x+2=0(Set factors equal to 0)

x=0 or x=2

Check answers. (Plug them in to make sure they work.)

x=0(Doesn't work in original equation)

x=2(Works in original equation)

Answer:

x=2

What is the value of x in the equation below?

Negative 3 minus (negative 8) minus (negative 2) = x

Answers

Answer:

13

Step-by-step explanation:

[tex]3 - ( - 8) = 11[/tex]

[tex]11 - ( - 2) = 13[/tex]

[tex]\bold{Answer:}[/tex] 7

[tex]\bold{Explanation:}[/tex] -3-(-8)-(-2)
-3+8+2
5+2
7

Rewrite using i. Show your work.

Answers

5 answer: i(rad)3 -3

Drag the operator to the correct location on the image. Which operation results in a trinomial?

Answers

Answer:

-

Step-by-step explanation:

I took the test

The correct operator that enters a circle is a subtraction sign.

Given the expressions

[tex](4x^5-8x) ()(3x^2-8x+9)[/tex]

We need to know which sign goes into the bracket that will give a trinomial when simplified.

A trinomial is a function containing 3-terms.

Using the subtraction sign.

[tex](4x^5-8x) - (3x^2-8x+9)[/tex]

Expand

[tex]= 4x^5-8x - 3x^2+8x-9\\= 4x^5-3x^2-8x+8x-9\\=4x^5-3x^2+0-9\\=4x^5-3x^2-9[/tex]

Since the resulting term is a trinomial (3 terms), hence the correct operator that enters a circle is a subtraction sign.

Learn more here: https://brainly.com/question/1320408

What are the possible rational zeros of f(x) = x4 + 2x3 - 3x2 - 4x – 12? (1 point)

Answers

6 because it’s one of the three most common

what segment is equal in length to the segment XZ ? pls help

Answers

Answer:

Segment XY or YX (they are the same)

Step-by-step explanation:

The marks in the sides indicate congruency.

find the quotient 5,9,374

Answers

Answer:

I don’t know exactly what ur asking but I hope this helps

Step-by-step explanation:

6.33

NOT Answer:

i would be glad to answer this but whats a quotient

sory

Convert the unit rate: 60 mi/h = Ft/s



Please help me!

Answers

1 mile = 5,280 feet.

60 miles x 5,280 = 316,800 total feet.

1 hour = 3,600 seconds.

316,800 feet / 3,600 seconds = 88 feet per second.

The answer is 88 ft/s

help i give crown ples what is the vaule of the underlind 4
0.478

Answers

Answer:

The tenth place

Step-by-step explanation:

Find the equation of a line through (-9, 2) perpendicular to y=3x-12
1 point
y=-1/3x-1
y=3x-1
y=1/3x+4
y=-3x-1

Answers

9514 1404 393

Answer:

  y = -1/3x -1

Step-by-step explanation:

The perpendicular line will have a slope that is the negative reciprocal of the slope of the given line. The given line's slope is the coefficient of x: 3. So, the perpendicular line's slope will be ...

  m = -1/3

Only one answer choice has that value as the coefficient of x:

  y = -1/3x -1

Please help will give brainliest answer

Answers

Answer:

side C'D' = 2.8 units

Step-by-step explanation:

Recall that a rotation does NOT change the dimensions and angles of the triangle, therefore side C'D' should have the same length as the original side CD (which is 2.8 units)

Therefore side C'D' = 2.8 units

Side cd is 2.8 units

Explain how you can prove the difference of two cubes identity. a3 – b3 = (a – b)(a2 + ab + b2)

Answers

Answer:

Use the distributive property to multiply the factors on the right side of the equation.

Simplify the product by combining like terms.

Show that the right side of the equation can be written exactly the same as the left side.

Show that the right side of the equation simplifies to a cubed minus b cubed.

Step-by-step explanation:

The difference of two cubes identity a³ - b³ = (a - b)(a² + ab + b²) has been proved using; distributive property of algebra.

We want to prove that;

a³ - b³ = (a - b)(a² + ab + b²)

Now, to solve this we need to understand the distributive property of algebraic functions.

This distributive property means distributing an item over others in a bracket. For example; a(b + c) = ab + ac

Applying this same distributive property to our question gives us;

(a - b)(a² + ab + b²) = a(a² + ab + b²) - b(a² + ab + b²)

Multiplying out the brackets gives us;

a³ + a²b + ab² - a²b - ab² - b³

Like terms cancel out to give us;

a³ - b³.

This is same as the left hand side of our initial equation and thus it has been proved.

Read more at; https://brainly.com/question/2747971

nine more than the product of a number and 6 is 5

Answers

Answer:

-2/3

Step-by-step explanation:

9+6x=5

6x=-4

x=-2/3

Help Mr. North can read 3/4 of a novel and 1/5 of a week. How much of the novel can Mr. North read in one entire week?

Answers

1/5 of a week = 1.4 days
7 / 1.4= 5
5 x 3/4= 3 3/4 novels
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