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Andreyy89
3 years ago
13

URGENT!! WILL GIVE BRAINLIEST IF CORRECT!!

Mathematics
1 answer:
kati45 [8]3 years ago
4 0

Answer:

4/2-3/2=1/2

1/2=.50

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The expression 100 + 20m, gives the volume of water in Eduardo's pool (in liters) after Eduardo spends m minutes filling his poo
Fudgin [204]

Answer:

205 litres

Step-by-step explanation:

The expression that gives the volume of water in Eduardo's pool (in liters) is:

100 + 20m

where m is time, in minutes

After 5\frac{1}{4} minutes (\frac{21}{4} minutes), the volume is will be:

100 + (20 * \frac{21}{4} )\\\\\\100 + (5 * 21)\\\\\\100 + 105

= 205 litres

The volume of water in the poll will be 205 litres.

8 0
4 years ago
17. Let A denote the event that the next request for assistance from a statistical software consultant relates to the SPSS packa
ankoles [38]

Answer:

a. The probability is not equal to 1

b. P (A') = 0.70

c. P ( A U B ) = 0.80

d. P ( A' ∩ B' ) = 0.20

Step-by-step explanation:

a. Because these A and B are disjoint

b. since the probability of  A is 0.30 then the probability of A compliment is

    P(A compliment ) = 1 - P (A)

    P(A compliment ) = 1-0.30

    P(A compliment ) = 0.70

c. Since event are disjoint then intersection of A and B is 0, so probability of A U B is;

       P ( A U B ) = P (A) + P(B) - P(A∩ B)

       P ( A U B ) = 0.30 + 0.50 - 0

       P ( A U B ) = 0.80

d. The inetrsection of compilments of A and B are:

by using De Morgan's Law we have,

                     P ( A' ∩ B' ) = P [(A U B )']

                     P ( A' ∩ B' ) = 1 - P ( A U B )

                     P ( A' ∩ B' ) = 1 - 0.80

                     P ( A' ∩ B' ) = 0.20

5 0
3 years ago
Even though the population standard deviation is unknown, an investigator uses z rather than the more appropriate t to test a hy
Marta_Voda [28]

Answer:

a) The level of significance is large because here z is not appropriate.

b) The true critical value is larger than z because the level of significance is large.

Step-by-step explanation:

a) Based on the question under consideration, the true level of significance is larger than .05 level of significance is large, the reason being that z is not appropriate in this case.

b) The true critical value is larger than that of the critical z, this is because the level of significance is large.

t* in P(T > t*) = 0.975 is more than z* = 1.96 in P(z> z*) =0.975

3 0
3 years ago
Which of the following functions is graphed above?
vredina [299]

Answer:

The answer is D ⇒ -4log(-x + 4)

Step-by-step explanation:

From the graph we chose the point of x-intercept (3 , 0)

∵ f(x) = -4log(-x + 4)

∴f(3) = -4log(-3 + 4) = -4log(1)

∵ log(1) = 0

∴f(3) = 0

If x = 0

∴ f(0) = -4log(0 + 4) = -4log4 = -2.40 ⇒ same value on the graph

∴ The answer is (D)

5 0
4 years ago
Given triangle DEF similar to triangle GHF. Enter segments in the blanks provided that would result in a true equation.
Paul [167]

Given:

The triangles DEF is similar to GHF.

The objective is to find a similar ratio of DF/DE.

Explanation:

Using the basic proportionality theorem, for the similar triangles DEF and GHF,

\frac{DE}{GH}=\frac{DF}{GF}=\frac{EF}{HF}\text{ . . . .   ..  .(1)}

Considering the first two ratios of equation (1),

\frac{DE}{GH}=\frac{DF}{GF}

On interchanging the segments further,

\frac{DF}{DE}=\frac{GF}{GH}

Hence, the required segment in the blanks is GF/GH.

4 0
2 years ago
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