In a chemistry lab, each of the 49 students need 80ml of acid. How many 1 l bottles of acid need to be ordered?

Answers

Answer 1

Answer:

49x0.08= 3.92 l

Step-by-step explanation:

so, you must order 4 bottles

Answer 2

Answer:

4 bottles

Step-by-step explanation:

49×0.08=3921


Related Questions

/O-O\ Help no fake answers

Answers

Answer:

I want to say it is the first one and the and the third one

Step-by-step explanation:

Answer:

a, d and e

Step-by-step explanation:

3.5%=3 1/2% of 20

3.5x100=0.035 of 20

3.5+3.5=7 (x2), then 20/2 will be 10

7% of 10

The diameter of a circle is multiplied by 10 how does the circumference change?

Answers

Step-by-step explanation:

The circumference of a circle is given by :

C=2πr, r is the radius of the circle

Also, 2r = D, diameter of the circle

⇒ C = πD

If the diameter of a circle is multiplied by 10, it means,

C = π(10)

⇒ C = 10π

Hence, if the diameter of a circle is multiplied by 10, then its circumference becomes 10π.

Evaluate..................

Answers

Answer:

Step-by-step explanation:

A 78 kg runner exerts a force of 69 N. What is the acceleration of the runner?(use the formula a=F/m)

Answers

Answer:

The answer is 0.88 m/s²

Step-by-step explanation:

To find the acceleration given the mass and force we use the formula

[tex]a = \frac{f}{m} \\ [/tex]

where

a is the acceleration

m is the mass

F is the force

From the question

m = 78 kg

F = 69 N

We have

[tex]a = \frac{69}{78} = \frac{23}{26} \\ = 0.8846153...[/tex]

We have the final answer as

0.88 m/s²

Hope this helps you

How much more is a 6% pay increase when your current annual salary is $62,900

Answers

Answer:

$3744

Step-by-step explanation:

5c.) Use this to calculate the area of a square that has perimeter 18 units.

Answers

Answer:

A= 20.25 units

Step-by-step explanation:

A= p²/16

=18²/16

=20.25 units

Round 2,345,4285 to the nearest tenth

Answers

The answer: 23454285.0

order these numbers from least to greatest, 4.509, 4.58, 4.09, 4.58258

Answers

Answer:

4.09,4.509,4.58,4.58258

Step-by-step explanation:

The average person blink 15 to 20 times per minute how many times does the average person blink in an hour

Answers

Answer:

900-1200

Step-by-step explanation:

mutpliy by 60

Suppose a dress originally cost $58.00. It is on sale for 25% off. Then a 6% sales tax is added to the discounted price. How much does the customer pay???
i asked this question 3 times.. no one respond... PLEASE help I have a quiz

Answers

Answer:

29.00

Step-by-step explanation:

What sybol is true for this equation? 9/5 - 7/5
<
>
=​

Answers

Answer:

I think it's  9/5 > 7/5

Step-by-step explanation:

Well, because 9 has more value than 7. Please don't be mad if I'm wrong.

Answer:

9\5 IS GREATER THAN 7\5

Step-by-step explanation:

WELL IF YOU LOOK YOU WILL SEE NINE IS GREATER THAN 7 EASY MATH HOPE I COULD HELP. PLEAAE MARK BRAINLYIEST

In a standard Normal distribution, which z-score represents the 20th percentile?
Find the z-table here.
-1.41
-0.84
0.84
1.41

Answers

Answer: B

Step-by-step explanation:

e2020

What number is one tenth of the number 0.9

Answers

Answer:

0.09

Step-by-step explanation:

First off, we can write 0.9 as a fraction. Reading this, we would say "nine tenths"; this means the number in fraction form is 9/10.

The word "of" in mathematics means we multiply. Thus when we take 1/10 "of" 9/10, we multiply the two:

1/10(9/10)

To multiply fractions, multiply the numerators and multiply the denominators:

1/10(9/10) = (1*9)/(10*10) = 9/100

Converting this back to a decimal, we read 9/100 as "nine one-hundredths"; this means decimal form is 0.09.

What is the value of 6(82)? Use place value and the distributive property. 6(82) = 6(80 + 2) = ? 432 482 492 552

Answers

Answer:

492

Step-by-step explanation:

6x82

Answer:

the answer is 492 the person above me is correct!!

Step-by-step explanation:

Geometry question. Please help!!!

Answers

Answer:

C

Step-by-step explanation:

The answer is C for that question.

20. A rectangle has a length of x + 2 meters and a width of 2x - 5. (A.APR.1)
A. Write an expression for the perimeter of the rectangle. Simplify your final answer.
B. Write an expression for the area of the rectangle. Simplify your final answer.
x + 2
2x - 5
A. Perimeter =
B. Area =
C. If x is 5, what is the perimeter? What is the area?
Rubric
2 pts - Two key elements are present
1 pt - One key element is present
O pts - No key elements are present

Answers

Answer:

A:

2(x + 2) + 2(2x - 5) =

2x + 4 + 4x - 10 =

6x - 6

perimeter = 6x - 6

B:

(x+2)(2x - 5)            expand the brackets:

2x² - 5x + 4x - 10

area = 2x² - x - 10

C:

area = 6x - 6 = (6 x 5) - 6 = 30 - 6 = 24

perimeter = 2x² - x - 10 = (2 x 5²) - 5 - 10 = (2 x 25) - 5 - 10 = 50 - 5 - 10 = 35

brainliest please? x

2 and 1 over 4 divided by 4 and 3 over 8?

Answers

Answer:

42

43

Step-by-step explanation:

that just the answer

A $55 pair of shoes was discounted 15 percent, making the sale price $46.75. The discounted price was then discounted again by 10 percent. Explain how you would find the final price of the shoes.

Answers

Answer:

Hi there

Your answer is

$42.08

To find the final price of the shoes, we would use the 15% discounted price, $46.75, as 100% and find 10% discount of that.

46.75 = 100%

/10

4.675 = 10%

Now, subtract 10% from the 15% discounted price

46.75 - 4.675 = 42.075$ Round up

$42.08

Answer:

find the final price by subtracting 10% from the sale price of $46.75 which is $4.68 making the final price $42.07

8. Find the value of x.
42.3
56.4
a. 108
b. 16.5675
C. 108.6
d. 7

Answers

Answer:

i'm answer is letter b 16. 5675

whats the slope of -2,7 , 4,1

Answers

Answer:

-1

Step-by-step explanation:

slope = change of y/ change of x

here, 7-1 / -2-4 = 6/-6 = -1

Answer:

slope=1

Step-by-step explanation:

(-2,7), (4,1)

y2-y1=m       1-7   = -6 = 1

x2-x1.          4-(-2)    6

A lamp was originally sold for $120.00. How much does it cost after a 20% discount??

Answers

Answer:

96

Step-by-step explanation:

the final value is 96 dollars

96 is what it would come out to be after discount

The sum of two consecutive integers is
−29.
Find the numbers.

Answers

the numbers are 14 and 15

Emily claims that a tree height of 43 inches is an outlier for the distribution. Based on the 1.5x IQR rule for outliers, is there evidence to support the claim?

Answers

Given:

Emily claims that a tree height of 43 inches is an outlier for the distribution.

To find:

Evidence to support the claim if any.

Solution:

The starting and the end of the box in box plot are first and third quartile respectively.

From the given box plot it is clear that, [tex]Q_1=34[/tex] and [tex]Q_3=38[/tex].

[tex]IQR=Q_3-Q_1[/tex]

[tex]IQR=38-34[/tex]

[tex]IQR=4[/tex]

According to 1.5x IQR rule for outliers, all the data values lies outside the interval [tex][Q_1-1.5\times IQR,Q_3+1.5\times IQR][/tex] are outliers.

Now,

[tex]Q_3+1.5\times IQR=38+1.5(4)[/tex]

[tex]Q_3+1.5\times IQR=38+6[/tex]

[tex]Q_3+1.5\times IQR=44[/tex]

We know that, 43<44.

Since, 43 is not greater than [tex]Q_3+1.5\times IQR[/tex], therefore, 43 is not an outlier and there is no evidence to support the claim.

Therefore, the correct option is D.

ALGEBRA Evaluate the expression if x = –8, y = 7, and z = –11.



x – 7

Answers

Answer:

-15

Step-by-step explanation:

x= -8   (-8)-7= -15

A chicken farm produces ideally 400,000 eggs per day but this total came very buy as many as 30,000 eggs what is the maximum and minimum expected production at the farm?

Answers

Answer:

400,000+30,000

430,000

400,000-30,000

370,000

Step-by-step explanation:

. A random sample of 100 children with working mothers showed that they were absent from school an average of 6 days per term with a standard deviation of 1.6 days. Provide a 98% confidence interval for the average number of days absent per term for all the children. a. Write down the equation you should use to construct the confidence interval for the average number of days absent per term for all the children. (10 points) b. Determine a 98% confidence interval estimate for the average number of days absent per term for all the children. (10 points)

Answers

Answer:

a) The equation is:

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

b) The 98% confidence interval = (5.62784, 6.37216)

Step-by-step explanation:

a. Write down the equation you should use to construct the confidence interval for the average number of days absent per term for all the children. (10 points)

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

b. Determine a 98% confidence interval estimate for the average number of days absent per term for all the children. (10 points)

Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples

Mean = 6 days

Standard deviation = 1.6 days

Number of samples = 100

Z score of 98% confidence interval = 2.326

Confidence interval = 6 ± 2.326 × 1.6/√100

= 6 ± 2.326 × 1.6/10

= 6 ± 0.37216

= 6 - 0.37216

= 5.62784

6 + 0.37216

= 6.37216

Therefore, the 98% confidence interval = (5.62784, 6.37216)

PLZ HELPPPPP WILL GIVE BRAINLIEST AND NO WRONG ANSWER PLZ

Answers

Answer:

D

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

D. because it has a proper domain and range and no other answer has correct domain/range. Therefore, D is the answer.

Determine the equation of the inverse of y = e x + 3 - 4

Answers

Answer:it would be a

Step-by-step explanation:

I got it right on odseyware

Simplify. Round your answer to three decimal places.

1
2
·
2
3
+ 0.345

Answers

Answer:

1/2 times 2/3 equals 0.333333....

that plus 0.345 equals 0.678

Step-by-step explanation:

Help? Only right answers get thanks and five stars.

Answers

slope: -3
y-intercept: (0,-2)
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