1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Svetllana [295]
2 years ago
15

Help if you a real one! C”mon pls click on me!!

Mathematics
1 answer:
dem82 [27]2 years ago
6 0

Answer:

D. \frac{AB}{VW} = \frac{CD}{XY}

Step-by-step explanation:

You have to make sure that the proportions of both figures are matched correctly. These are the pairings:

AB is like VW but bigger.

CB is like XW but bigger.

AE is like VZ but bigger.

CD is like XY but bigger.

ED is like ZY but bigger.

Thus, the only correct comparison would have been  \frac{AB}{VW} = \frac{CD}{XY}

You might be interested in
An architect made a scale drawing of a building. The scale of the drawing is 3 inches equals 50 feet. The actual building has a
melamori03 [73]
The height in the scale drawing was 250 inches.
7 0
3 years ago
An object is heated to 100°. It is left to cool in a room that
stepladder [879]

Answer:

Step-by-step explanation:

Use Newton's Law of Cooling for this one.  It involves natural logs and being able to solve equations that require natural logs.  The formula is as follows:

T(t)=T_{1}+(T_{0}-T_{1})e^{kt} where

T(t) is the temp at time t

T₁ is the enviornmental temp

T₀ is the initial temp

k is the cooling constant which is different for everything, and

t is the time (here, it's in minutes)

If we are looking first for the temp after 20 minutes, we have to solve for the k value.  That's what we will do first, given the info that we have:

T(t) = 80

T₁ = 30

T₀ = 100

t = 5

k = ?

Filling in to solve for k:

80=30+(100-30)e^{5k} which simplifies to

50=70e^{5k} Divide both sides by 70 to get

\frac{50}{70}=e^{5k} and take the natural log of both sides:

ln(\frac{5}{7})=ln(e^{5k})

Since you're learning logs, I'm assuming that you know that a natural log and Euler's number, e, "undo" each other (just like taking the square root of something squared).  That gives us:

-.3364722366=5k

Divide both sides by 5 to get that

k = -.0672944473

Now that we have a value for k, we can sub that in to solve for T(20):

T(20)=30+(100-30)e^{-.0672944473(20)} which simplifies to

T(20)=30+70e^{-1.345888946}

On your calculator, raise e to that power and multiply that number by 70:

T(20)= 30 + 70(.260308205) and

T(20) = 30 + 18.22157435 so

T(20) = 48.2°

Now we can use that k value to find out when (time) the temp of the object cools to 35°:

T(t) = 35

T₁ = 30

T₀ = 100

k = -.0672944473

t = ?

35=30+100-30)e^{-.0672944473t} which simplifies to

5=70e^{-.0672944473t}

Now divide both sides by 70 and take the natural log of both sides:

ln(\frac{5}{70})=ln(e^{-.0672944473t}) which simplifies to

-2.63905733 = -.0672944473t

Divide to get

t = 39.2 minutes

3 0
3 years ago
What is the square route of 5?
denis-greek [22]

Square root are the same 2 numbers multiplied.

Ex: 8*8=64 (Square root is 8)

9*9=81 (Square root is 9)

2.2360679775*2.2360679775=5

Answer=2.2360679775


6 0
3 years ago
Complete the equation of the line through (−10,3) and (-8,-8)
yawa3891 [41]

Answer: y = (-11/2)x -52

Aka y=mx*b

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Dylan weighs 45 pounds. Use the expression you derived in part I to calculate how much more Bruce weighs than Alan.
boyakko [2]
Hi I’m sorry Alan I got home

3 0
3 years ago
Other questions:
  • What the equation and he abwser
    15·2 answers
  • Which expression is equivalent to the given expression?<br><br> 8(3/4a)−8
    11·1 answer
  • Use the graph of the sine function y = 2 sin θ shown below.
    11·1 answer
  • Kellens bill at a restaurant before tax and tip is $22.00. If tax is 5.25% and he wants to leave 15% of the bill including the t
    13·1 answer
  • Need some help with this one
    7·2 answers
  • Consider the first three terms of the sequence below. 14,000, 12,600, 11,340...
    9·1 answer
  • What is the sum of the geometric sequence -3,18,-108,.. if there are 7 terms?
    5·1 answer
  • Write an equivalent expression for -6(a+8)
    7·1 answer
  • No link need right answer
    8·2 answers
  • The numbers below are the golf score for the UGA golf team. 68, 70, 72, 73, 74, 75. What is the mean AND the mean absolute devia
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!