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devlian [24]
3 years ago
14

An architect is planning to make two triangular prisms out of iron. The architect will use ∆ABC for the bases of one prism and ∆

DEF for the bases of the other prism.
-
-
(a) What is the scale factor from ∆ABC to ∆DEF?

(b) Suppose the height of the prism made by ∆ABC is 15 centimeters. What is the volume of the prism made by ∆ABC? Remember to show your work.

(c) Suppose the volume of the prism made by ∆ABC is 4459 cm^3. What is the volume of the prism made by ∆DEF? Remember to show your work.

Mathematics
1 answer:
____ [38]3 years ago
4 0

a) 5/7

b) 4459 cm cube

c) 2275 cm cube

Step-by-step explanation:

Step 1 :

a)

The Side AB (28 cm) has been scaled to side DE (20 cm)

Let x b the scale factor.

Then we have 28 *x = 20

=> x = 20/28 = 5/7

Hence the scale factor is 5/7

Step 2 :

b)

Given the height of the triangular prism is 15 cm

Volume = ( 1/2 ) * base* height of the triangle * height of the prism

= (1/2)* 21*28*15 = 4410 cm cube.

Step 3 :

c)

Given volume of the triangular prism with base ABC is 4459 cm cube

The scale factor is 5/7

Hence the volume of the prism with DEF as base is

4459 * (5/7)*(5/7) = 2275 cm cube.

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Sauron [17]

Answer:

  not similar; corresponding sides are not proportional

Step-by-step explanation:

If the triangles were similar, corresponding sides would be proportional. That is, you would have ...

  AX/AB = AY/AC

Here, those ratios are ...

  6/24 ≠ 10/35

so, the corresponding sides are not proportional, and the triangles are not similar.

8 0
3 years ago
Please help me it will be quick<br> 1.)-8-5b+7+5b
iragen [17]
-8-5b+7+5b
add +5b to -5b to get 0.
-8+7 = -1
Answer is -1.
6 0
4 years ago
A salesperson makes a monthly salary of $1,200 plus 3% of the sales she makes that week. If her total take home pay for the mont
Westkost [7]

how much did they sale? you can not complete the answer without a sale amount.  because you are asking that they made $1,200 plus 3% of sale, but you do not have the amount they sold so it just $1,200+3% of the sale , but no number for how much they sale, but for advice i would get the total amount they sale and divide by 100 then times it by 3 then try to fill in the void on how they went from 1,200 to 2500. You need to tell us the amount they sold and then the we can answer your question, but without you will not get your answer, so your question is incomplete.

8 0
3 years ago
Need help ASAP, will mark brainliest if you can check my answer:
ki77a [65]

According to the <em>compound interest</em> model, we find the following results: I) x ≈ 11.5 yr, C' = $ 101317.36, II) r ≈ 7.4 %, x ≈ 9.8 yr, III) C = $ 7626.38, x ≈ 8.6 yr, IV) r ≈ 6.5 %, C = $ 12801.61

<h3>How to determined all the variables associated with compound interest</h3>

<em>Compound</em> interest describes the <em>capital</em> gain in term of <em>deposited</em> capital and the consideration that such capital is increased continuously in time. The compound interest model is shown below:

C' = C · (1 + r/100)ˣ     (1)

Where:

  • C - Initial capital
  • C' - Current capital
  • r - Interest rate, in percentage.
  • t - Time, in years

The <em>doubling</em> time (x) is the period needed for a capital to be doubled. It is described by the following expression based on (1):

x = (㏒ 2)/[㏒ (1 + r/100)]     (2)

Now we proceed to calculate each missing variable:

Case I - Doubling time

x = (㏒ 2)/[㏒ (1 + 6.2/100)]

x ≈ 11.5

Case I - Current capital

C' = 75000 · (1 + 6.2/100)⁵

C' = 101317.36

Case II - Interest rate

r = 100\cdot \left(\sqrt [5] {\frac{7130.90}{5000} }-1\right)

r ≈ 7.4

Case II - Doubling time

x = (㏒ 2)/[㏒ (1 + 7.3/100)]

x ≈ 9.8

Case III - Initial capital

C = 11414.71/(1 + 8.4/100)⁵

C = 7626.38

Case III - Doubling time

x = (㏒ 2)/[㏒ (1 + 8.4/100)]

x ≈ 8.6

Case IV - Interest rate

r = 100\cdot \left(\sqrt [11] {2 }-1\right)

r ≈ 6.5

Case IV - Initial capital

C = 17539.32/(1 + 6.5/100)⁵

C = 12801.61

To learn more on compound interest: brainly.com/question/14295570

#SPJ1

3 0
2 years ago
Two dice are rolled. Find the probability that the sum of the numbers on the two dice is 4.
photoshop1234 [79]
1/12

there are 6 faces of dice :1,2,3,4,5,6
total no. of faces(N)= 6
to make four it should= (1+2) (2+2) (3+1)
total no of dice(n) = 2
formula=
N^{n}
probability= 3/36
=1/12
4 0
3 years ago
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