Helpp me plzzzzzzz

Explain how the following two formulas are the same:

Volume = b x h

Volume = l x w x h

Answer:

14

Step-by-step explanation:

I am preatty sure its 14 hope this helps

Answer:

3

Step-by-step explanation:

25 - 10 -3 × [2-(-2)]

25 - 10 -3 × (2+2)

25 - 10 -3 × 4

25 - 10 - 12

3

Answer:

i don't really know if it's correct 25-10-6x-2x

15-8x

the answer that you're looking for is 5.5 or 5 1/2, it's the same thing.

Answer:

Number of bacteria when t = 0 is 2,000

Step-by-step explanation:

Given:

Number of bacteria in a culture by equation

Q(t) = 2(729^t)

Value of t = 0

where t is number of hours

Find:

Number of bacteria when t = 0

Computation:

Given equation

Q(t) = 2(729^t)

Put t = 0

Q(0) = 2(729⁰)

We know that;

a⁰ = 1

So,

Q(0) = 2(729⁰)

Q(0) = 2(1)

Q(0) = 2

Number of bacteria when t = 0 is 2,000

Answer:

25.12

Step-by-step explanation:

Formula: 2πr, r = d/2

Given: π = 3.14, d = 8

Sub: r = 8/2

Simplify: r = 4

Sub: 2(3.14)(4)

Simplify: 6.28(4)

Solve: 25.12

Answer:

Correct

Step-by-step explanation:

Step-by-step explanation:

I am sure you are 100 percent Clear.

Thanks.

Answer:

480 ft

Step-by-step explanation:

9514 1404 393

Answer:

  see below

Step-by-step explanation:

Carry out the math element by element. For example, ...

  c11 = -7a11 +3b11

  c11 = -7(8) +3(5) = -41

_____

Additional comment

Matrix operations like this one are easily handled by all spreadsheets and most graphing calculators. Some scientific calculators support matrix operations as well.

Answer:

u just asked 2 questions so..... you typed them? i really dont understand ur question but 2 + 2 =

Step-by-step explanation:

loll

Answer: you just did

Step-by-step explanation:

you just sked a question

2+2=fish

2+2=4

Answer:

Colleen alone to clear the yard of leaves in 40 minutes

Step-by-step explanation:

P.S - The exact question is -

Given - Seas and Colleen are raking leaves in their yard. Working together they can clear the yard of leaves in 24 minutes. What kind of long it would take Sean 20 minutes longer to clear the yard dinner with Colleen working alone

To find - When c is the number of minutes it would take Colleen to finish the job when working alone, the situation is modeled by this rational equation: How long would it take Colleen alone to clear the yard of leaves?

Proof -

Given that the equation is -

[tex]\frac{1}{c} + \frac{1}{c+20} = \frac{1}{24} \\\frac{c + 20 + c}{c(c+20)} = \frac{1}{24}\\\frac{2c + 20}{c^{2} +20c} = \frac{1}{24}\\24(2c + 20) = c^{2} +20c\\48c + 480 = c^{2} +20c\\28c + 480 = c^{2}\\c^{2} - 28c - 480 = 0\\c^{2} - 40c + 12c - 480 = 0\\c(c - 40) + 12(c - 40) = 0\\(c+12)(c-40) = 0\\c = -12, 40[/tex]

As time can not be negative

So,

we get

c = 40 minutes

∴ we get

Colleen alone to clear the yard of leaves in 40 minutes

Answer: 3583.37 ≈ 3500

Step-by-step explanation:

Answer:

4:1

Step-by-step explanation:

Answer:

The price of each book without sales tax

Step-by-step explanation:

It is C. 42 oz

--------

Step-by-step explanation:

15 + 17 + 23 + 19

32 + 42 = 74

74/4 = 18.5 is the mean

Answer:

Mean= 18.5

Step-by-step explanation:

How to Find the Mean

Add up all data values to get the sum

Count the number of values in your data set

Divide the sum by the count

The mean is the same as the average value in a data set.

Mean Formula

The mean x of a data set is the sum of all the data divided by the count n.

Answer:

9.7 m

Step-by-step explanation:

Your answer is 9.7cm

Answer:

10

Step-by-step explanation:

Hope this helps

Answer:

10

Step-by-step explanation:

-5(-2)

negative times negative in multipling and divding the answer is always a positive

Answer:

A. 180

b. 7

Step-by-step explanation:

Answer:

a. $180

b. $7

Step-by-step explanation:

In order to easily find the cost of x amount of pens, first find the unit price:

Part A - Find the cost of 15 pens:

Part B - How many pens can be bought for $84?:

Answer:

a=10.1

k=3

Step-by-step explanation:

Lets solve the first equation first.

94=10a-7

Lets add 7 to both sides.

101=10a

Divide both sides by 10 to isolate a

101/10=a

a=10.1

Lets do the second equation.

7k+10=31

Subtract 10 from both sides

7k=21

Divide 7 by both sides to isolate k

k=3

Answer: I believe its all of them...

Step-by-step explanation:

Answer:

that is a trapezoid.if it were a rectangle it would have four sides but not equal if it was a square it would have four sides but equal.a parallelogram it would be seen somehow slopy and a rhombus too.so that is a trapezoid.

Answer:

x= - square root 141 or x= square root 141

Answer:

0.0119047619

Step-by-step explanation:

Answer:

21/4

Step-by-step explanation:

1/4 ÷ (17 + 4)

1/4 ÷ (21)

21 × 1/4 = 21/4

-TheUnknownScientist

Answer:

x = 7

Step-by-step explanation:

Based on the angle bisector theorem, we would have the following equation:

21/(3x - 12) = 14/6

21/(3x - 12) = 7/3

Cross multiply

(3x - 12)*7 = 3*21

21x - 84 = 63

21x - 84 + 84 = 63 + 84

21x = 147

21x/21 = 147/21

x = 7

Answer:

The percentage of people taking the test who score between 489 and 573 is 34%.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean of 573, standard deviation of 84

Percentage of people taking the test who score between 489 and 573

The mean is 573.

489 = 573 - 84, which means that 489 is one standard deviation below the mean.

The normal distribution is symmetric, which means that 50% of the measures are below the mean and 50% are below the mean.

So between one standard deviation below the mean and the mean, the percentage is 68/2 = 34%

The percentage of people taking the test who score between 489 and 573 is 34%.