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gregori [183]
3 years ago
10

Geometry ! Please help

Mathematics
2 answers:
morpeh [17]3 years ago
8 0
DE would be half of the length of AB


hope this helps
Anestetic [448]3 years ago
6 0
DE WOULD BE HALF OF THE LENGHT OF AB
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Subtract 2x^2+6x-5from7x^2+3x+4
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-5^2+9x-9 (need more space to answer)
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3 years ago
Raul calculated that he would spend $125 on school supplies this year. He actually spent $87.50 on school supplies. What is Raul
dybincka [34]

Answer:

C 30%

Step-by-step explanation:

87.50/125= 0.70

1-0.7-0.3

3 0
2 years ago
Read 2 more answers
The route used by a certain motorist in commuting to work contains two intersections with traffic signals. The probability that
tekilochka [14]

Answer:

a) P(X∩Y) = 0.2

b) P_1 = 0.16

c) P = 0.47

Step-by-step explanation:

Let's call X the event that the motorist must stop at the first signal and Y the event that the motorist must stop at the second signal.

So, P(X) = 0.36, P(Y) = 0.51 and P(X∪Y) = 0.67

Then, the probability P(X∩Y) that the motorist must stop at both signal can be calculated as:

P(X∩Y) = P(X) + P(Y) - P(X∪Y)

P(X∩Y) = 0.36 + 0.51 - 0.67

P(X∩Y) = 0.2

On the other hand, the probability P_1 that he must stop at the first signal but not at the second one can be calculated as:

P_1 = P(X) - P(X∩Y)

P_1 = 0.36 - 0.2 = 0.16

At the same way, the probability P_2 that he must stop at the second signal but not at the first one can be calculated as:

P_2 = P(Y) - P(X∩Y)

P_2 = 0.51 - 0.2 = 0.31

So, the probability that he must stop at exactly one signal is:

P = P_1+P_2\\P=0.16+0.31\\P=0.47

7 0
3 years ago
Which rule describes the translation?
max2010maxim [7]

Answer:

c

Step-by-step explanation:

translations assignment

4 0
3 years ago
9.50 One way to evaluate the effectiveness of a teaching assistant is to examine the scores achieved by his or her students on a
EleoNora [17]

Answer:

Step-by-step explanation:

Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.

H_0: s^2 = 300\\H_a: s^2 \neq 300

(Two tailed test for variance )

Sample variance =480

We can use chi square test for testing of hypothesis

Test statistic = \frac{(n-1)s^2}{\sigma^2} \\=62.4

p value = 0.0100

Since p <0.05 our significance level, we reject H0.

The sample variance cannot be claimed as equal to 300.

5 0
3 years ago
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