All categories

3 years ago

Reflected images are congruent to their pre-image true or false

2 answers:

defon3 years ago

5 0

This is true because a reflection is a rigid transformation, which means it preserves shape size and angle measure
hope this helps!

gregori [183]3 years ago

4 0

It's true......................................

You might be interested in

In ΔJKL, l = 860 inches, j = 920 inches and ∠K=126°. Find ∠L, to the nearest degree.

fomenos

Answer:

Step-by-step explanation:

JKL= ABC, jkl=abc

1.) use law of sines to find k.

$c^{2} =a^{2} +b^{2} -2abCosC$

$c=\sqrt{920^{2} +860^{2} -2(920)(860)cos(126) } = 1586.225515$

2.) use law of cosines to find L

$\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}$

plug in for b and c: $\frac{860}{sinB} =\frac{1586.225515}{sin126}$

cross multiply: $\frac{1586.23sinB}{1586.23} =\frac{860sin126}{1586.23}$

$sinB= 0.4386227612\\B=sin^-1(0.4386227612)= 26.01604086\\$

L=26

5 0

3 years ago

The mathematics department of a college has 7 male professors, 6 female professors, 12 male teaching assistants, and 7 female

Natalka [10]

Answer:

0.78125 or 78.125%

Step-by-step explanation:

Male professors = 7

Female professors = 6

Male T.A. = 12

Female T.A. = 7

Number of people in the department = 32

The probability that the selected person is a professor or a male is given by the probability that the person is a professor added to the probability that the person is a male, minus the probability that the person is a male professor:

$P( P\ or\ M) = P(P) +P(M) - P(P\ and\ M)\\P( P\ or\ M) =\frac{7+6}{32}+ \frac{7+12}{32}- \frac{7}{32} \\P( P\ or\ M) = 0.78125 = 78.125\%$

The probability is 0.78125 or 78.125%

6 0

3 years ago

HAL SPENT 5/4 HOUR READING EACH DAY FOR 7 DAYS. HOW MUCH TOTAL DID HE SPEND READING?

kobusy [5.1K]

Answer:

35/4 hours or 8.75 Hours

Step-by-step explanation:

Take the amount of time he reads each day times the number of days to get your answer

7 0

3 years ago

Determine the rate of change for the graph from 2010 to 2012

mash [69]

Answer:

B)-20 students per year

8 0

3 years ago

What is the value of f(−1)? -3 -1 0 1

r-ruslan [8.4K]

So you see where x=-1 is
it is at (-1,-1)
answer is -1

4 0

3 years ago

Read 2 more answers