20% of all the children in a class are left handed. 4 children are left handed. How many children are there in the class all together?

Answer:

1 solution

Step-by-step explanation:

x = 12

Because one side of triangle is equal and two angles are equal . So option 1 is your answer .

Answer:

12960

Step-by-step explanation:

(30+2)*405

405*30 + 405*2

12150+810

12960

Hope this helps plz hit the crown :D

Answer:

The Greatest Common Factor (GCF) for 28 and 63, notation CGF(28,63), is 7.

Step-by-step explanation:

The factors of 28 are 1,2,4,7,14,28;

The factors of 63 are 1,3,7,9,21,63.

So, as we can see, the Greatest Common Factor or Divisor is 7, because it is the greatest number that divides evenly into all of them.

Brainlist maybe? :)

Answer:

(6x+3)(6x-3)

Step-by-step explanation:

I used FOIL

Multiply the first numbers 6x*6x=36x^2

The outer -18x

Inner 18x which the outer and the inner cross out

Last 3*-3=-9

36x^2 -9

Answer:

(6x+3) (6x—3)

Step-by-step explanation:

(6x + 3) (6x—3)

(6x • 6x ) + (6x • -3) + (3 • 6x) + (3• -3)

            36x² -18x + 18x -9

                    36x²-9

Hello!

[tex]\large\boxed{c = 12.65}[/tex]

Use the Pythagorean Theorem to solve for the hypotenuse:

a² + b² = c²

Plug in the given values:

12² + 4² = c²

144 + 16 = c²

160 = c²

Take the square root of both sides:

c = √160

c ≈ 12.65.

Answer:

12.6

Step-by-step explanation:

12 square plus 4 square then the root of that equals 12.6  

Answer: q^3

Step-by-step explanation:

The required expression that is equivalent to the given expression is q³.

Given that,
To determine the expression is equivalent to (q^4)^-3/q^-15 for all values of q where the expression is defined.

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
Given expression,
[tex]= \frac{(q^4)^{-3}}{q^{-15}} \\= q^{15 - 12}\\=q^3[/tex]

Thus, the required expression that is equivalent to the given expression is q³.

Learn more about simplification here: https://brainly.com/question/12501526

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Answer:

Part A: Factor out the GCF. In this case, the GCF is 2y. So it looks like

2 x^3 * y+18xy-10 x^2 * y-90y=2y (x^3 - 5 x^2 + 9x-45)

Part B: The result from above will need to be factored by grouping.

Part C: If you switch the terms, the factoring will work out differently, but at the end, the factorization will be the same.

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Given:

The table of values.

To find:

The rate of change.

Solution:

From the given table it is clear that the rate of change is constant and function passes through two points (-1,5) and (2,-4). So, the rate of change is

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]m=\dfrac{-4-5}{2-(-1)}[/tex]

[tex]m=\dfrac{-9}{2+1}[/tex]

[tex]m=\dfrac{-9}{3}[/tex]

[tex]m=-3[/tex]

So, the rate of change is -3.

Therefore, the correct option is C.

Answer

4 Months

Step-by-step explanation:

You pay 15 for 4 months giving you 60 then add 20 so you have 80 you have 10 for 4 months which is 40 then add 40 to it which is 80

Answer:

i think your supposed to input x

Step-by-step explanation:

15x+20 for Leslie

10x+40 for Rashad

and input 6 and 4 in the place of x

15(6)+20 = $110

10(6)+40 = $100 (Not same answer)

15(4)+20 = $80

10(4)+20 = $80. (Same answer)

in 4 months the clubs will cost the same

Answer:

The relation is a linear function with the equation: y = -6/5x + 3/5

Step-by-step explanation:

                                            Question 5)

The given graph is a straight line.

We know that the graph of a linear function is a straight line that can be written in the form

[tex]y = mx+b[/tex]

where m is the slope and b is the y-intercept

The slope of the line can be determined by taking two points

(3, -3)

(-2, 3)

Finding the slope

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\left(x_1,\:y_1\right)=\left(3,\:-3\right),\:\left(x_2,\:y_2\right)=\left(-2,\:3\right)[/tex]

[tex]m=\frac{3-\left(-3\right)}{-2-3}[/tex]

[tex]m=-\frac{6}{5}[/tex]

From the graph, the y-intercept can be obtained by setting x=0 and check the corresponding y-value of y.

or substituting m = -6/5 and (3, -3) in the slope-intercept form to determine y-intercept 'b'.

[tex]y = mx+b[/tex]

[tex]-3\:=-\frac{6}{5}\left(3\right)\:+\:b[/tex]

[tex]-\frac{18}{5}+b=-3[/tex]

[tex]b=\frac{3}{5}[/tex]

now substituting m = -6/5 and b = 3/5 in the slope-intercept form to determine the equation of the linear function

y=mx+b

y = -6/5x + 3/5

Therefore, the relation is a linear function with the equation: y = -6/5x + 3/5

Answer:

a. 80g fish

b. 200g butter

Step-by-step explanation:

a. you have to divide it by 3 because 2 is 1/3 of 6 so 240/3 = 80g of fish.

b. multiply by 2.5 because 15 is 2.5 times 6 so 80*2.5=200g of butter.

Answer:

a) 80g of fish

b)200g of butter

Step-by-step explanation:

a) 240/6=40g per people

40*2=80

b)80/6=13 1/3g per people

13 1/3*15=200

Answer:

x < 3

Step-by-step explanation:

please mark me brainliest

Answer:

x<3

Step-by-step explanation:

5 > x + 2 sub 2 from both sides

x<3

Answer:

x=1.25, y=1.75

Step-by-step explanation:

The two triangles formed (one triangle with side lengths of 5, 7, 8 and another with sides 5+x, 10, and 7+y) are similar, because they share the same angle measures.

Now, 2 sides given that we can compare ratios with are the side with length 8, and the side with length 10. 10/8= 1.25, which is the ratio of the sides on these 2 triangles.

Now we want to find what the side '5+x' is equal to. To do that we can use our  ratio, and multiply 5 by 1.25 to find '5+x'. This is 6.25. To find x, all we need to do is subtract 5 from 6.25, which is 1.25.

Let's find y now. Do the same thing that we did with the side '5+x'; find what '7+y' is by multiplying 7 by 1.25, which is 8.75. 8.75-7= 1.75.

Hope this helps! :)

Step-by-step explanation:

i hope this helps its kind of hard to see but i tried lol

Answer:

P = 16x+26y units

Step-by-step explanation:

Let the length is (x+8y) units

Width = (8x-x+5y) units

We need to find the perimeter. We know that the perimeter is equal to the sum of all sides.

P = 2[(x+8y) + (8x-x+5y)]

= 2[(8x+8y+5y)]

= 2[8x+13y]

= 16x+26y

Hence, the required perimeter is 16x+26y.

Answer:

one solution

Step-by-step explanation:

Answer:

3x^3 + 7x^2 + 7x + 5

Step-by-step explanation:

Use long division for polynomials.

Answer:

c

Step-by-step explanation:

Answer:

yes because the slopes are the negative reciprocal of eachother

Step-by-step explanation:

Answer:

(-4,8)

Step-by-step explanation:

so f(-4)=8 this is easy

the -4 is the x

beause f(x)=y

so the 8 is the y

when y is f(-4)=8 then the cordinate points are (-4,8)

Answer:

89 is the answer.

Step-by-step explanation:

Answer:

yr ans is 89.

hope it helps.

Answer:

should be c

Step-by-step explanation:

Answer: D

Step-by-step explanation:

a*ex

Answer:

1,000,000

Step-by-step explanation: Since there are 10 possible digits, we know that there is a 1/10 chance for any possible digit in any slot. So, since there are 6 slots we can do 1/10^6, or 1 in 1 million.

So, 720 ways are available if each digit can be repeated

A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter. In combinations, you can select the items in any order.

The access code to a house security system consists of 6 digits.

[tex]6!=6\times 5 \times 4\times 3\times 2\times 1\\6!=720[/tex]

Learn more about the value combination:

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A complex number is said to be additive if  the sum of a complex number and its additive inverse is zero. The additive inverse of the complex number is 2+ 8i

A complex number is said to be additive if  the sum of a complex number and its additive inverse is zero.

For instance the the additive inverse of the complex number a+bi is -a-bi.

Given the comlex number -2 + 8i, the additive inverse is expressed as:

Additive inverse = -(-2 - 8i)

Additive inverse = 2 + 8i

Hence the additive inverse of the complex number is 2+ 8i

Learn more on additive inverse here; https://brainly.com/question/3402614

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Answer:

B

Step-by-step explanation:

:-)

Answer:

between 7 and 23

Step-by-step explanation:

Answer:

7 friends.....

Step-by-step explanation:

7÷2=3.5