BD=2x CD= 8 BC=x determine the numerical length of BD

Answer:

16 teachers.

Step-by-step explanation:

84 / 21 = 4

4 * 4 = 16

Hope this helped. Please give brainly if its the best!

Answer:

[tex] \huge \colorbox{blue}{16 students}[/tex]

Step-by-step explanation:

we are given the ratio of students and teachers:

[tex] \displaystyle \: \frac{21}{4} [/tex]

which means if the number of students is 21 then the number of teachers should be 4

to find how many teachers should go if students 84 we have to divide 84 by [tex]21/4[/tex] :

[tex] \displaystyle \: 84 \div \frac{21}{4} [/tex]

simplify division:

[tex] = \displaystyle \: 84 \times \frac{4}{21} [/tex]

simplify multiplication:

[tex] = \displaystyle \: \cancel{ 84} \: ^{4} \times \frac{4}{ \cancel{21}} \\ = 4 \times 4 \\ = 16 [/tex]

Answer:

-24

Step-by-step explanation:

first multiply -3 and 5 to get -15

so it will be 12-21-15 then subtract 12-21 and you get -9

then do -9-15=24  

hope this helps :)

Answer:

the answer is five(5).

Answer:

Quantitative data

Step-by-step explanation:

When we measure something, then we can quantify them. By also making a count, we are trying to quantify a particular entity.

Now in this case, we know that age is something we can quantify or measure. By nothing the difference between the year of birth and the present year, we can simply give the number of years or simply how

old a person is.

This clearly show that we have measured the count of that entity. This makes age an example of quantitative data

categorical data Step-by-step explanation:

Answer:

Axis of symmetry: x = 2

Vertex at: (2, -13)

y-intercept is (0, -5)

Step-by-step explanation:

The equation for the x-value of the vertex in a quadratic of the form:

[tex]y=ax^2+bx+c[/tex]

is given by:

[tex]x_{vert}=-\frac{b}{2\,a}[/tex]

which in our case gives:

[tex]x_{vert}=\frac{8}{2*2} =2[/tex]

Then the equation for the axis of symmetry is given by:  x = 2

and the y of the vertex can be calculated as:

[tex]y_{vert}=2 (2)^2-8\,(2)-5=-13[/tex]

Then the vertex is at the point: (2, -13)

And the y-intercept is found when x=0, that is:

y-intercept is (0, -5)

Answer:

[tex]y-4=9[/tex]

The opposite of subtraction is addition, so you would have to add 4 to both sides:

[tex]y-4+4=9+4[/tex]

[tex]y=13[/tex]

The value of the y for the equation,y – 4 = 9  will be y=13 and e have to apply the subtraction operation must be applied to both sides in order to isolate the variable y.

The subject of arithmetic operations includes the study of numbers and their operations, which are important to all other branches of mathematics. These systems' fundamental operations are addition, subtraction, multiplication, and division.

It is given that the equation is,y – 4 = 9.

We have to solve the equation y – 4 = 9 and find the operation that must be applied to both sides in order to isolate the variable y.

The following steps are to be taken to isolate the variable y.

y – 4 = 9

y-4+4=9+4

y=13

Thus, the value of the y in the equation, y - 4 = 9, will be 13, and in order to isolate the variable y, the subtraction operation must be done on both sides.

Learn more about the arithmetic operations here,

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Answer:

D. 36

Step-by-step explanation:

51-15= 36

Answer:

3s + 22 = 13

Step-by-step explanation:

Answer:

70

Step-by-step explanation:

Answer:

The answer is, 21%

Step-by-step explanation:

by adding all the responses, you get a total of 200. Then, you do 42/200 and then simplify, and 21/100 is 21%

Answer:

Correct Answer Is 3160 Maybe

Step-by-step explanation:

Answer:

3160

Step-by-step explanation:

3.16*10^3

=31.6*10^2

=316*10

=3160

Answer:

[tex]h=3[/tex]

Step-by-step explanation:

So we have the equation:

[tex](6h+8)-(3h+2)=15[/tex]

First, let's distribute the negative:

[tex](6h+8)+(-3h-2)=15[/tex]

Combine like terms:

[tex](6h-3h)+(8-2)=15[/tex]

Subtract or add:

[tex]3h+6=15[/tex]

Subtract 6 from both sides:

[tex]3h=9[/tex]

Divide both sides by 3:

[tex]h=3[/tex]

And we're done!

Answer:

h=3

Step-by-step explanation:

1 Remove parentheses.

6h+8-3h-2=156h+8−3h−2=15

2 Simplify  6h+8-3h-26h+8−3h−2  to  3h+63h+6.

3h+6=153h+6=15

3 Subtract 66 from both sides.

3h=15-63h=15−6

4 Simplify  15-615−6  to  99.

3h=93h=9

5 Divide both sides by 33.

h=\frac{9}{3}h=

​3

​

​9

​​

Answer:

draw all 100 of two colors to be assured

Step-by-step explanation:

if wrong plz tell me i can help on other things if wrong

=============================================

Explanation:

The sequence {1,2,3,4,1,2,3,4...}  has "1,2,3,4" repeat forever. We can say that the cycle is 4 terms before it restarts the pattern again. Because of this 4-cycle pattern, we know that 150/4 = 37.5 = 37 full cycles happen. The leftover part is of length 150-37*4 = 2.

In short we have 37 full cycles of {1,2,3,4} happening. The last leftover bit has {1,2} only

In the subsquence {1,2,3,4} its sum is 1+2+3+4 = 10. Having 37 copies of {1,2,3,4} leads to a sum of 37*10 = 370 so far.

Then we add on the last bit 1+2 = 3 to get 370+3 = 373.

Therefore, the sum of the first 150 terms is 373. I think your teacher made a typo when listing out the answer choices. Please double check to make sure.

7850 ft²

Hi there !

d = 2r => r = d/2 = 100ft/2 = 50 feet

A = πr²

= 3.14×(50ft)²

= 3.14×2500ft²

= 7850 ft²

Good luck !

Answer:

21x² - 19x + 4

Step-by-step explanation:

Step 1: Write factors

(7x - 4)(3x - 1)

Step 2: FOIL (First Outside Inside Last)

21x² - 7x - 12x + 4

Step 3: Combine like terms

21x² - 19x + 4

Answer:

x=12

Step-by-step explanation:

Answer:

14.62

Step-by-step explanation:

Answer:

14.62

Step-by-step explanation:

23.40

-   8.78

________

 1 4  .6 2

For you to answer you need to place the commas correctly. The commas must be below each other to help you place the other numebrs correctly vertically. And after that you subtract and remember borrowing :)

HOPE IT HELPED

Answer:

reflect it about the x axis and  stretch it  by 2 in the y direction

Step-by-step explanation:

f(x) = |x|  to f (x)=-2|x|

y = −f(x)  Reflects it about x-axis

y = Cf(x)  C > 1 stretches it in the y-direction

so we reflect it about the x axis and  stretch it  by 2 in the y direction

Answer: reflect it about the x axis and stretch it by 2 in the y direction

Step-by-step explanation:

Answer:

-1.6

Step-by-step explanation:

The quotient when 457.6 is divided by - 286 is - 1.6.

The number which is being divided is the dividend.

The number with which we are dividing is the divisor.

The result when a dividend is divided by the divisor is the quotient.

A remainder is the extra portion of a number when it isn't completely divisible.

We know A number N divided by D with quotient Q and the remainder R can be written as,

N = DQ + R.

Given, The quotient when 457.6 is divided by - 286 is - 1.6.

learn more about quotient here :

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Answer:

(-infinity, 0]

Step-by-step explanation:

I'm assuming you meant  f(x) = -4x^2.  If so, the graph is that of a parabola that opens down and has vertex at (0, 0).  In other words, f(x) is always zero or below zero.

Thus the range is (-infinity, 0]

Answer:

Step-by-step explanation:

12(17/3 - 3/4x = 1/2x + 5)

68 - 9x = 6x + 60

-15x = -8

x = 8/15

The question is incomplete. Here is the complete question.

The initial mass of a certain species of fish is 7 millions tons. The mass of fish, if left alone, would increase at a rate proportional to the mass, with a proportionality constant of 2/yr. However, comercial fishing removes fish mass at a rate of 15 million tons per year.

(a) When will all fish be gone?

(b) If the fishing rate is changed so that the mass of fish remains constant, what should the rate be?

Answer: (a) t = 1.35 years.

              (b) Rate = 14,000,000

Step-by-step explanation:

(a) Initial mass is [tex]m_{0}[/tex] = 7,000,000

Rate of increase and comercial fishing gives an equation of growth:

[tex]\frac{dm}{dt}=2m-15,000,000[/tex]

m' - 2m = - 15,000,000

This is an ordinary linear equation (ODE) of first order, of type:

y' + a(x)y = f(x)

where a(x) and f(x) are continuous.

To solve this type of linear equation, first calculate integrating factor, using:

[tex]u(x) = e^{\int\limits {a(x)} \, dx }[/tex]

In our case,

[tex]u(t) = e^{\int\limits {-2} \, dt }[/tex]

Solving:

[tex]u(t) = e^{-2t }[/tex]

The general solution of a ODE can be written as

[tex]y=\frac{1}{e^{u(x)}}[\int\ {u(x).f(x)} \, dx + c][/tex]

In our case:

[tex]m=\frac{1}{e^{-2t}}[\int\ {-2t.(-15)} \, dt + c][/tex]

Solving:

[tex]m=\frac{1}{e^{-2t}}[\frac{15}{2}e^{-2t}+c ][/tex]

To find constant c, use initial condition, i.e., m(0)=7,000,000:

[tex]7,000,000=\frac{1}{e^{-2.0}}[\frac{15}{2}e^{-2.0}+c ][/tex]

[tex]c=-500,000[/tex]

Then for the fish growth, general equation is:

[tex]m=7500,000-500,000e^{2t}[/tex]

When the fish is gone, means m = 0, then:

[tex]7500,000-500,000e^{2t}=0[/tex]

[tex]500,000e^{2t}=7500,000[/tex]

[tex]e^{2t}=15[/tex]

[tex]ln(e^{2t})=ln(15)[/tex]

[tex]t=\frac{ln(15)}{2}[/tex]

t = 1.35

It will take 1.35 years for the fish to be gone.

(b) For the mass to be constant, rate of growth must be zero:

[tex]\frac{dm}{dt}=0[/tex]

Suppose the changed fishing rate is k:

[tex]2m_{0}-k=0[/tex]

[tex]-k=-2.7,000,000[/tex]

k = 14,000,000

To remain constant, rate must be 14,000,000.

Answer:I think it’s 40 sorry if it’s wrong :/

Step-by-step explanation:

Answer:

w1 = (-1/11, 1/11, -3/11)

w2 = (12/11, 21/11, 3/11)

Step-by-step explanation:

Direction ratio of w1 = Direction ratio of L (because parallel) = K+(1, -1, 3)

Let <a,b,c> be direction ratio of w2.

Then, <a,b,c>. <1,-1,3> = 0

a-b+3c = 0

v = w1 + w2

(1, 2, 0) = k(1, -1, 3) + (a, b, c)

a + k = 1

b - K = 2

c - 3k = 0

Solving 4 equations, a = 12/11, b= 21/11, c = 3/11, k=-1/11

So, w1 = -1/11(1, -1 ,3) = (-1/11, 1/11, -3/11)

w2 = (12/11, 21/11, 3/11)

Answer:

16 < 10

Step-by-step explanation:

Less than = <

[tex]16 < 10[/tex]

By the way, this inequality is FASLE

Answer:

The answer is C.

Step-by-step explanation: The number between 0 and 1. Think of decimals as cents, 100 cents makes a whole. So the number will be greater than 0 but less than 100.

Answer:

Right answer is D.

Step-by-step explanation:

I just tried a couple of fractions like 3/4 =.75=75%   1/2=.5=0.5%

Then I got it right on test :)