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Andre45 [30]
3 years ago
10

Please help me with this ASAP (Geometry)

Mathematics
1 answer:
9966 [12]3 years ago
7 0
4) They are congruent by ASA.

5) you can set up a proportion.

original height / shadow = original of tree/ shadow of tree

18/21 = x/14
21x = 252
x = 12

SO the height of the tree is 12

Hope this helps :)
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adoni [48]
\frac{13}{26} divide the numerator and denominator by 13

= \frac{1}{2}
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3 years ago
Can someone please help me with this math question
inn [45]

Answer:

1. reflection across x-axis

2. translation 6 units to the right and 3 units up (x+6,y+3)

Step-by-step explanation:

The trapezoid ABCD has it vertices at points A(-5,2), B(-3,4), C(-2,4) and D(-1,2).

First transformation is the reflection across the x-axis with the rule

(x,y)→(x,-y)

so,

  • A(-5,2)→A'(-5,-2)
  • B(-3,4)→B'(-3,-4)
  • C(-2,4)→C'(-2,-4)
  • D(-1,2)→D'(-1,-2)

Second transformation is translation 6 units to the right and 3 units up with the rule

(x,y)→(x+6,y+3)

so,

  • A'(-5,-2)→E(1,1)
  • B'(-3,-4)→H(3,-1)
  • C'(-2,-4)→G(4,-1)
  • D'(-1,-2)→F(5,1)

7 0
3 years ago
To estimate μ, the mean salary of full professors at American colleges and universities, you obtain the salaries of a random sam
GenaCL600 [577]

Answer:

<h3>73220±566.72</h3>

Step-by-step explanation:

The formula for calculating the confidence interval is expressed as;

CI = xbar ± z*s/√n

xbar is the sample mean =  $73,220

z is the z score at 99% CI = 2.576

s is the standard deviation = $4400

n is the sample size = 400

Substitute the given values into the formula;

CI = 73,220 ± 2.576*4400/√400

CI = 73,220 ± 2.576*4400/20

CI = 73,220± (2.576*220)

CI = 73220±566.72

Hence a 99% confidence interval for μ is 73220±566.72

5 0
2 years ago
Jorge baked cookies for his math class's end-of-year party. There are 28 people in Jorge's math class including Jorge and his te
timurjin [86]
You have to multiply the number of people times the number of cookies they are each supposed to get

So, 28 x 3 = 84 cookies
7 0
3 years ago
points) Thursday, September 2, 2021 01:55 PM EDT Andrew has nine fewer coins than Casey. Bob has three more than twice as many c
swat32

Answer:

Andrew: 131 coins Bob: 265 coins Casey: 145 coins

Step-by-step explanation:

3 0
2 years ago
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