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White raven [17]
3 years ago
9

Can someone help i really need help

Mathematics
1 answer:
love history [14]3 years ago
6 0

9514 1404 393

Answer:

  1. no problem is stated

  2. cube: V = s³; A = 6s². prism: V = lwh; A = 2(lw +h(l+w))

  3. 400 cm²

Step-by-step explanation:

1, 2. Answers shown above. The formulas are from your list of formulas.

__

3. Cube surface area is ...

  A = 6(20 cm)² = 2400 cm²

Prism surface area is ...

  A = 2((40 cm)(20 cm) +(10 cm)(40 cm +20 cm))

  A = 2(800 cm² +10(60) cm²) = 2(1400 cm²) = 2800 cm²

The difference in areas is ...

  2800 cm² -2400 cm² = 400 cm² . . . . difference in surface area

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A point G on a segment on a segment with endpoints F(4, 8) and H(10, 12) partitions the segment in a 3:4 ratio. Find G. You must
Andru [333]

Suppose, we are given

two points as

F as (x1, y1)

H as (x2, y2)

assume  it divides  in m/n

we can use formula

G=(x,y)=(\frac{mx_2+nx_1}{m+n}, \frac{my_2+ny_1}{m+n})

now, we are given points as

F=(x1, y1)=(4,8)

x_1=4,y_1=8

H=(x2, y2)=(10,12)

x_2=10, y_2=12

\frac{m}{n} =\frac{3}{4}

so,

m=3,n=4

now, we can find  

x=(\frac{3*10+4*4}{3+4}, y=\frac{3*12+4*8}{3+4})

x=\frac{46}{7} , y=\frac{68}{7}

so, point is

G=(\frac{46}{7} , \frac{68}{7}).................Answer

7 0
3 years ago
Find the slope of the line that passes through (-21, 59) and (35, -13).
ivann1987 [24]

Answer:

-1.29

Step-by-step explanation:

y2-y1÷x2-x1

-13-59÷-35--21

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4 0
3 years ago
Read 2 more answers
What is the total investment of $2150 invested at 5.3% for 16 years and compounded continuously?
sladkih [1.3K]

Answer:

The total investment is $5020.19

Step-by-step explanation:

Given : $2150 invested at 5.3% for 16 years and compounded continuously

To find : What is the total investment?

Solution :

The formula of continuously compounded interest is

A = Pe^{rt}

Where A = amount invested

P = principal = $2150

e = Euler's number (on calculator)

r = interest rate as decimal = 5.3%=0.053

t = time in years = 16 years

Substitute the value in the formula,

A = Pe^{rt}

A = 2150\times e^{0.053\times 16}

A = 2150\times e^{0.848}

A = 2150\times 2.3349

A = 5020.19

Therefore, Option 4 is correct.

The total investment is $5020.19.

6 0
3 years ago
The chief chemist for a major oil and gasoline production company claims that the regular unleaded gasoline produced by the comp
Svetradugi [14.3K]

Answer:

The probability of finding an average in excess of 4.3 ounces of this ingredient from 100 randomly inspected 1-gallon samples of regular unleaded gasoline = P(x > 4.3) = 0.00621

Step-by-step explanation:

This is a normal distribution problem

The mean of the sample = The population mean

μₓ = μ = 4 ounces

But the standard deviation of the sample is related to the standard deviation of the population through the relation

σₓ = σ/√n

where n = Sample size = 100

σₓ = 1.2/√100

σₓ = 0.12

The probability of finding an average in excess of 4.3 ounces of this ingredient from 100 randomly inspected 1-gallon samples of regular unleaded gasoline = P(x > 4.3)

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The standardized score for any value is the value minus the mean then divided by the standard deviation.

z = (x - μ)/σ = (4.3 - 4)/0.12 = 2.5

To determine the probability of finding an average in excess of 4.3 ounces of this ingredient from 100 randomly inspected 1-gallon samples of regular unleaded gasoline = P(x > 4.3) = P(z > 2.5)

We'll use data from the normal probability table for these probabilities

P(x > 4.3) = P(z > 2.5) = 1 - P(z ≤ 2.5) = 1 - 0.99379 = 0.00621

5 0
3 years ago
Just help on what to say here
erastovalidia [21]
The congruence symbol is this: ≅.

It’s saying to write the statement that’s saying both shapes are congruent. For example ABC ≅ DEF but use the letters in the shapes they gave.
7 0
3 years ago
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