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3 years ago

Which triangles are similar to triangle ABC?

Mathematics

1 answer:

olasank [31]3 years ago

3 0

Answer:

DEF

Step-by-step explanation:

DEF is half of ABC, which means they're both similar in some way.

As we can see line DE is half of line AB (DE is 5.5 and AB is 11)

Line DF and Line EF are half of Line AC and Line BC (DF/EF is 4 while AC/BC is 8)

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-3/4 + (-3/4) <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20-%203%7D%7B4%7D%20%20%2B%20%20%5Cfrac%7B%20-%203%7D%7B4%7D%20

nika2105 [10]

Firstly, since these two fractions have the same denominator, add the numerators up: $\frac{-6}{4}$

While it appears that the answer is -6/4, you can further simplify it by dividing the numerator and denominator by 2: $-\frac{6}{4}\div\frac{2}{2}=-\frac{3}{2}$

Your answer is $-\frac{3}{2}$ 

3 0

3 years ago

If 6 pipes fill a tank in 120 minutes, then 5 pipes can fill it in how many minutes

Marianna [84]

Answer:

It'll take 144 minutes for 5 pipes.

Step-by-step explanation:

${ \sf{6 \: pipes = 120 \: mins}} \\ { \sf{5 \: pipes = ( \frac{6}{5} \times 120) \: mins}} \\ \\ = { \sf{144 \: mins}}$

but practically, it seems to be abnormal. if 6 pipes take 120 mins, 5 pipes must takes a time greater than 120 mins cause amount of water flowing to the tank is decreasing.

But there is a possibility that pressure of water was increased for the case of five pipes, that's why it takes a time less than 120 mins. (t < 120)

5 0

3 years ago

Read 2 more answers

The decay of 192 mg of an isotope is given by A(t)= 192e-0.015t, where t is time in years. Find the amount left after 55 years.R

finlep [7]

This is a typical radioactive decay problem which uses the general form:

A = A0e^(-kt)

So, in the given equation, A0 = 192 and k = 0.015. We are to find the amount of substance left after t = 55 years. That would be represented by A. The solution is as follows:

A = 192e^(-0.015*55)
A = 84 mg

6 0

3 years ago

Convert 0.0148 into words

Anna71 [15]

Answer:

one hundred forty-eight ten-thousandths

Step-by-step explanation:

8 0

3 years ago

Z/-2.5-011.5=-1.34 what is z

ololo11 [35]

Answer:

z=-25.4

Step-by-step explanation:

Add 11.5 to both sides of the equation, then simplify. Multiply all terms by the same value to eliminate fraction denominators

3 0

3 years ago