Is it True or false ?? Explain .

Answer:

W

Step-by-step explanation:

9^(-1/2)*9^(3/2)=(1/3)*(3^3)=3^2=9

Answer:

Parabolas have an axis of symmetry. If we assume that x=2 is that axis of symmetry, them that must mean the x values -2 and 6 should have the same y values, which they don't, thus an equation is not possible.

Answer:

Step-by-step explanation:

The function is modeled after

[tex]y=a(b)^x[/tex] where a is the initial amount and b is the growth/decay factor. If we start with 5000 bacteria, then a = 5000. The decay factor is determined by the rate at which the bacteria decrease. We know that rate at which the bacteria decrease is 60% because 40% are left alive; therefore, b = .4:

[tex]f(x)=5000(.4)^x[/tex] with a horizontal asymptote of y = 0, the first choice.

The function that represents the number of live bacteria after x days of treatment can be written as f(x) = 5000(0.4)ˣ

A relation is a function if it has only One y-value for each x-value.

Given that 40% of the sample remains alive, which means that the number of live bacteria is decreasing exponentially over time.

The base of the exponential function is 0.4, as 40% can be written as 0.4. The initial population of bacteria is 5000, so we multiply the base by 5000 to get the total number of live bacteria after x days.

The graph of this function will have a horizontal asymptote of y = 0, since the number of live bacteria will approach zero as time goes on.

f(x) = 5000(0.4)ˣ is the function represents the number of live bacteria after x days of treatment

Hence, option A is correct, f(x) = 5000(0.4)ˣ with a horizontal asymptote of y = 0.

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Answer:

If u add the number it will show u te answer which is 7

Step-by-step explanation:

Answer:

i dont know

Step-by-step explanation:

i dont kow

Given:

The numbers are 378811, 267988, 250260, 196596, 193171.

To find:

The approximate value of the given numbers to the nearest hundreds, thousands and ten thousand.

Solution:

The required values shown in the below table:

Numbers       Nearest hundreds   Nearest thousands   Nearest ten thousand

378811                378800                     379000                        380000

267988              268000                    268000                        270000

250260              250300                    250000                        250000

196596               196600                      197000                        200000

193171                 193200                       193000                       190000

Answer:

C) it will get narrower

Step-by-step explanation:

Answer:

8 sundaes

4:32

.......

.......

...

Step-by-step explanation:

To make 1 sundae, the total number of spoons use of sprinkles=4. Let the number of sundaes made in 32 spoonfuls of sprinkles be x. Also the number of sprinkles and the number of sundaes are directly proportional. Therefore, Hence, if 32 spoonfuls of sprinkles is used, then the ice-cream shop can make 8 sundaes.

Answer:

25/1363

0.0183

Step-by-step explanation:

This question includes division. When a number is "over" that number should be the numerator of the fraction and the other number should be the denominator. So, 25 over 1363 would look like [tex]\frac{25}{1363}[/tex] in fraction form. They have no common factors so it cannot be simplified further. However, if wanted, then you could divide the two numbers to get a decimal, 0.0183. But, this is rounded because the exact answer is not rational.

Answer:

452.39

Step-by-step explanation:

Hope this is right

Answer: y =  ½x - 2

Step-by-step explanation:

Slope-intercept form: y = mx + b

y =  ½x + b

2 =  ½(8) + b

2 = 8/2 + b

2 = 4 + b

2 - 4 = b

b = -2

y =  ½x - 2

Answer:

D 3^3 *3^-7

Step-by-step explanation:

1/27 = 1/3^3 = 3^-3

When multiplying with the same base, add the exponents

A 3^1 * 3^-10  = 3^-9

B 3^-1 * 3^10 = 3^9

C 3^-4 * 3^7 = 3^3

D 3^3 *3^-7 = 3^-3

Answer:

-14y -154

Step-by-step explanation:

Multiply -14 and y = -14y

Multiply -14 and 11 = -154

Answer:

[tex]-14\left(y+11\right)[/tex]

[tex]=-14y+\left(-14\right)\cdot \:11[/tex]

[tex]=-14y-14\cdot \:1[/tex]

[tex]=-14y-154[/tex]

OAmalOHopeO

Answer:

-3, 7, 17, 27, 37

Step-by-step explanation:

Essentially, you just put -3 for the first box, and add 10. Then you take that new number and put it in the next box.

Answer:

2nd option and 4th option, other functions don't apply, remember r(1) can't be 3 since the she designs 2 rings in the first hour.

Answered by GAUTHMATH

Answer:

2/3

Step-by-step explanation:

If we know two points we can find the slope using

m = ( y2-y1)/(x2-x1)

    = ( 3 -1)/(8 - 5)

    = 2/3

Answer:

8 years

Salary: $95000

Step-by-step explanation:

Write an equation to model the salary and its raise per year. Add the base salary to the raise per year salary times (x). Where the parameter (x) represents the number of years spent in the company.

Company (1):

75000 + 2500x

Company (2):

55000 + 5000(x)

One is asked at which year will the salaries be the same. Equate the two expressions and solve for the variable (x):

75000 + 2500x = 55000 + 5000(x)

Inverse operations:

75000 + 2500x = 55000 + 5000x

20000 + 2500x = 5000x

20000 = 2500x

8 = x

Substitute (x) into any one of the experssions and simplify to solve the epxression,

55000 + 5000(x)

x = 8

= 55000 + 5000(8)

= 55000 + 40000

= 95000

Answer:

.54 (54%)

Step-by-step explanation:

Answer:

Since they are similar, 45/27=30/18=x/24. x=40

Answer:

CDJ

Step-by-step explanation:

Answer:

Choice C. C,D,J

Step-by-step explanation:

Answer:

i think b

because -5 and -2

Answer:

1000 cm²

Step-by-step explanation:

perimeter = 2 * length + 2 * width

2 * 5x + 2 * 2x = 140

10x + 4x = 140

14x = 140

x = 10

Length: 5x = 5(10) = 50

Width: 2x = 2(10) = 20

area = length * width

area = 50 cm * 20 cm

area = 1000 cm²

Answer:

y = 2x + 4

Step-by-step explanation:

(x₁ , y₁) --> (0 ,4)    & (x₂ , y₂) = (6 , 16)

Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\[/tex]

          [tex]= \frac{16-4}{6-0}\\\\=\frac{12}{6}\\\\m = 2[/tex]

(x₁  , y₁) --> (0 ,4)

y - y₁ = m(x - x₁)

y - 4 = 2(x - 0)

y - 4 = 2x

   y = 2x + 4

Answer:

[tex]\sqrt{2\frac{7}{8} } =\\\sqrt{\frac{25}{8} } =\\\sqrt{\frac{25*2}{16} } =[/tex]

±5√2/4

Answer:

x = 5

Step-by-step explanation:

4x + 17 = 12x - 23

23 + 17 = 12x - 4x

      40 = 8x

       8      8

       5  =  x

The value of x should be 5.

A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal).

As, to from the square using the dimension of parallelogram the value of x should be 5

as the side of square is equal.

4x + 17 = 12x - 23

23 + 17 = 12x - 4x

40 = 8x

5  =  x

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Answer:

12

Step-by-step explanation:

The proportion is equal to [tex]\frac{x}{10}=\frac{42}{35}[/tex]

We can simplify the right side by dividing by 7/7 to get the right side equal to 6/5. Now we can cross-multiply to get

[tex]60=5x[/tex]

Dividing both sides by 5, we have the answer as

[tex]x=12[/tex]

Answer:

Step-by-step explanation:

The position function for this is given as

[tex]h(t)=-16t^2+48t+2.75[/tex] where h(t) is the height of the football at any time t. If the ball is caught at 5.25 feet, that h(t) value is 5.25 since we are looking for the time the ball was in the air from its initial 2.75 feet to 5.25 feet, when it was caught.

[tex]5.25=-16t^2+48t+2.75[/tex] and set this equal to 0:

[tex]-16t^2+48t-2.5=0[/tex] and factor.

When we factor we get

t = .05 and t = 2.95 in seconds.

That first time tell us how long it takes to go from the initial height of 2.75 to a point 2.5 feet higher, 5.25. To get get back down to the 5.25 foot height on the other side of the vertex, is 2.95 seconds. So the total time the ball was in the air was 3 seconds exactly.

The ratio 4:3 means for every 4 girls there are 3 boys.

Divide total girls by 4, multiply that by 3 to get total boys:

180/4 = 45 x 3 = 135

There are 135 boys

For total students add boys and girls:

180 + 135 = 315 total students