HELP IMMIDIATELY MY TEACHER IS TIMING ME! 30 POINTS

Answer:

113335800

Step-by-step explanation:

solve it step by step

10 x 5/2 is 25

25 x 4533432= 113335800

Answer:

113335800

Step-by-step explanation:

10x5=50

2x4533432=9066864

9066864+50=113335800

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:

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:

57 for the way you wrote it. -10 if you write it backwards.

Step-by-step explanation:

Answer:

c

Step-by-stepc explanation:

Answer:

X=36

Step-by-step explanation:

this question is incomplete, the complete question is:

1. is this model effective

2. what is the correlation coefficient for this data.

3. for a student with a bmi of 25, what is the predicted number of hours under the influence.

Step-by-step explanation:

1. first of all this model is not effective because we have r² as 0.134. this tells us that only 13.4 percent of the of the variations that exist in this data has been explained by the model

1. we get the correlation coefficient by

[tex]+-\sqrt{r^{2} }[/tex]

the regression slope coefficient has a negative sign. this is what we would use in calculating the correlation coefficient.

[tex]-\sqrt{r^{2} }[/tex]

= -√0.134

= -0.366

therefore the correlation coefficient is -0.366

2. to get the number of hours under the influence with a bmi of 25

the equation is

49.2-1.15bmi

= 49.2-1.15(25)

= 49.2-28.75

= 20.45

Answer:

Step-by-step explanation:

Because if you add 22 and 8 together you get 30 and once you get 30 you subtract 10 gaining 20 and then you divide 20 getting [tex]2\sqrt{5}[/tex].

22+8= 30

30-10= 20

[tex]\sqrt{20} = 2\sqrt{5[/tex]

Answer:

B

Step-by-step explanation:

If wrong don't rate and I'll edit it

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:

C

Step-by-step explanation:

This is the only possible correct answer because the other three all show the final price as 0.90x, which is correct since the price is the normal one minus 10 percent. C is incorrect because it suggests the normal price has a 10% tax, or extra value on it.

Answer:

Z=34

Step-by-step explanation:

Answer:

z = 34

Step-by-step explanation:

Given

2 + 8 - z = -24

Combine Like Terms-

10 - z = -24

Rearrange Terms-

-z + 10 = -24

Subtract 10 from both sides

-z + 10 - 10 = -24 -10

Simplify

-z = -34

Divide -1 from both sides

-z/-1 = -34/-1

Answer-

z = 34

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

Answer:

Top picture: 1/3

middle picture: 1

bottom picture: 1/2

Step-by-step explanation:

rise over run

Answer:

90°

Step-by-step explanation:

Answer:

Step-by-step explanation:

What do you have to do solve it or what

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:

8 hours

Step-by-step explanation:

it's increasing by 6 so at the end there's a reminder of 2.

Answer:

7

Step-by-step explanation:

60-16=44

44÷6≈7

Answer:

4 miles

Step-by-step explanation:

30-18=12

12÷3=4

hope this helped :)

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:

Take 148÷37. Which equals 4. The answer is C.

Answer:

28/3 approximated to 9 1/3

Step-by-step explanation:

multiply the fractions and estimate it to it's alternativve form

Answer:

180 pages

Step-by-step explanation:

200*1/10

= 200/10

= 20 pages

total pages =200

read = 20 pages

left to read =200-20

=180 pages

Answer:

5) $82

6) 300

Step-by-step explanation:

If y=x is your linear regression equation, and if x = temperature and y = $ of ice cream sales, then...

5) x = 82, and given that y=x, then y = $82

6) y = $300, and given that y=x, then x = 300

This doesn't really require algebraic calculation, so I wonder if the linear regression equation obtained from the scatter plot is correct.

9514 1404 393

Answer:

  x = 10

Step-by-step explanation:

The angle bisector divides the sides proportionally.

  (2x +1)/12 = (x +4)/8

  2(2x +1) = 3(x +4) . . . . . multiply by 24

  4x +2 = 3x +12 . . . . . . . eliminate parentheses

  x = 10 . . . . . . . . . . . . . . subtract 2+3x

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:

y = -1/3x

Step-by-step explanation:

Since the line has to be parallel, that means it will have the same slope. So, we use the given point and slop to solve for the new y= mx + b using the equation y - y = m( x - x)

m= -1/3    x = 3   y = -1

y + 1 = -1/3(x - 3)

y + 1 = -1/3x + 1

y = -1/3x