find the value of x

a. 4
b. 9
c. 18
d. 14

Answer:

true

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

because you dont have a chance

Answer: Yes it is a function

Step-by-step explanation:

Answer:

Step-by-step explanation:

8-4(2+ (5)2) /12

8-4 (2+25)/12

8-4 (27)/12

4(27) /12

108/12

= 9

Answer:

a) 4800 bacteria

b) [tex]y(t) = 300(4)^t[/tex]

c) 754 bacteria

Step-by-step explanation:

A bacteria culture starts with 300 bacteria and doubles in size every half hour.

This means that the number of bacteria after t periods of half hour is given by:

[tex]y(t) = 300*(2)^{t}[/tex]

(a) How many bacteria are there after 2 hours?

2 hours is 2*60/30 = 4 periods of 2 hours, so this is y(4).

[tex]y(4) = 300*(2)^{4} = 300*16 = 4800[/tex]

(b) How many bacteria are there after t hours?

It doubles every half hour, so each hour, it is multiplied by 4. Then

[tex]y(t) = 300(4)^t[/tex]

(c) How many bacteria are there after 40 minutes?

40 minutes is 40/30 = 1.33 periods of half hour. So this is y(1.33).

[tex]y(1.33) = 300*(2)^{1.33} = 754[/tex]

Answer:

it equals 17 tenths

Step-by-step explanation:

Answer:

the answer will be 0.7 for sure

Step-by-step explanation:

for the steps

the question is given as eight tenths i.e 0.8 and another is given nine tenth i.e 0.9

so when you calculate (add) both

0.8+0.9

gives

0.7

The answer is the 3rd one:)

Answer:

the y intercept is b=0

Step-by-step explanation:

because the line is in y=mx+b form b is 0 here and b is the y incercept in a linear equation, therefore the y intercept is b=0.

Answer:

VXW

Step-by-step explanation: Since the first one is the same model as the 2nd but with different letter and the order for the first one would be the same as the 2nd model.

Answer:

a. 36ft

b. 20 inches

Step-by-step explanation:

Answer:

You´re correct.

Congrats.

Answer:

60%

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

(2/5)*b+1 = -11 // + 11

(2/5)*b+1+11 = 0

2/5*b+12 = 0 // - 12

2/5*b = -12 // : 2/5

b = -12/2/5

b = -30

b = -30

Step-by-step explanation:

hope this helped :)

Step-by-step explanation: First: Multiply 2/5 by 2. 5x2=10. 10 then turns into o a whole number +1=11.

10+1=11

Answer:

£15347.07

Step-by-step explanation:

Given data

Amount=£19064.67

% decrease=19.5%

let us find the value of 19.5%

=19.5/100*19064.67

=0.195*19064.67

=£3717.6

Hence the new Amount after the decrease is

=19064.67-3717.6

=£15347.07

Answer:

x=21.9317121994

Step-by-step explanation:

You just look at the half triangle and use the Pythagorean Theorem.  One side of the triangle is 9 (half of 18), the other is 20, so you find the hypotenuse.

9²+20²=x²

81+400=x²

481=x²

√481=x

x=21.9317121994

Answer:

The margin of error is of [tex]2.262\frac{6}{\sqrt{10}} = 4.29[/tex]

Step-by-step explanation:

We have the standard deviation for the sample. So the T-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 10 - 1 = 9

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 9 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.95}{2} = 0.975[/tex]. So we have T = 2.262

The margin of error is:

[tex]M = T\frac{s}{\sqrt{n}} = 2.262\frac{6}{\sqrt{10}} = 4.29[/tex]

In which s is the standard deviation of the sample and n is the size of the sample.

The equation that represents the margin of error is: [tex]E = 2.262 \times \frac{6}{\sqrt {10}}[/tex]

The given parameters are:

The margin of error is calculated using:

[tex]E = z_y \times \frac{\sigma}{\sqrt n}[/tex]

So, we have:

[tex]E = z_y \times \frac{6}{\sqrt {10}}[/tex]

The quantile at 95% confidence interval is 2.262

So, the equation becomes

[tex]E = 2.262 \times \frac{6}{\sqrt {10}}[/tex]

Hence, the equation that represents the margin of error is: [tex]E = 2.262 \times \frac{6}{\sqrt {10}}[/tex]

Read more about margin of error at:

https://brainly.com/question/14396648

Answer:

22.41

Step-by-step explanation:

100%-> 166

13.5%-> 22.41

Answer:

4 miles

Step-by-step explanation:

30-18=12

12÷3=4

hope this helped :)

Answer:

Right angle triangle

Step-by-step explanation:

Answer:

The density of the pine log is 0.2842 pounds per inch.

Step-by-step explanation:

To calculate the density of an object, you must divide its mass by its volume (radius times height). Thus, given that the pine log that has a 5-inch radius and is 30 inches long, while its weight is approximately 42.63 pounds, the following calculation must be performed to determine its density:

X = 42.63 / (30 x 5)

X = 42.63 / 150

X = 0.2842

Thus, the density of the pine log is 0.2842 pounds per inch.

Answer:

520.83 k g  of seed

Step-by-step explanation:

Answer:

A #2.5#-#kg# bag of grass seed covers an area of #1200# #m^2#. How much seed is needed to cover a square park with side length #500# #m#?

Step-by-step explanation:

Answer:

Emily's inequality x < 6 is correct because the number of hours is less than or equal to.

Emily's number line is incorrect The endpoint is filled in and the number line is greater than the endpoint.

Step-by-step explanation:

Emily's Model:

                                       x < 6

<----|----|----|----|----|----⊕----|----|----|----|----|----|----|----|---->

     1    2   3    4   5    6   7   8   9   10  11   12  13  14

What Emily's model should look like to make the number line true:

                                       x < 6

<----|----|----|----|----|----О----|----|----|----|----|----|----|----|---->

     1    2   3   4    5    6     7     8   9   10  11  12  13  14

Answer:

yes

Step-by-step explanation:

Answer: Can’t solve without picture.

Step-by-step explanation:

You should add a picture or at least draw it. It can’t be solved without it because the sides need to correlate together.

Answer:

c

Step-by-stepc explanation:

Answer: y=2.608x^2-115.264x+1568.064

Step-by-step explanation: