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Alik [6]
3 years ago
10

Solve the equation -6x-3y=-21 and 3x+y=6 by.combining the equations

Mathematics
1 answer:
Firlakuza [10]3 years ago
7 0

Answer:

i have made it in above picture hope it helps

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Given rectangle QUAD, If DU = 5x - 4 and QP = 2x + 7, then find the length of DU.
ira [324]

Answer:

DU = 86

Step-by-step explanation:

Properties of a rectangle,

- Opposite sides are equal in measure.

- Diagonals of a rectangle are equal.

- Diagonals bisect each other.

In the given rectangle QUAD,

Diagonals AQ and DU bisect each other at P.

AQ = DU

2(QP) = DU [Since, AQ = 2(PQ)]

2(2x + 7) = 5x - 4

4x + 14 = 5x - 4

5x - 4x = 14 + 4

x = 18

Since, DU = 5x - 4

DU = 5(18) - 4

     = 90 - 4

     = 86

Therefore, measure of DU = 86 units

3 0
3 years ago
Suppose that a teacher plans to give four students a quiz. The minimum possible score on the quiz is 0, and the maximum possible
denis23 [38]

Answer:

5 is the largest it could possibly be

8 0
3 years ago
ny with 350 employees is changing the employee health insurance plan to either plan A or plan B. The company wants to know if em
Marianna [84]

Answer:

All the conditions for the chi square test of homogeneity are satisfied.

Step-by-step explanation:

The conditions for the chi square test  are

1) the sample is a random sample

2) the variable under study is categorical

3) all expected value of the number of sample observations are greater or equal to 5.

A)The observations must be independent

B) for 2 categories the expected values must be at least 5

C) for the 3 categories the expected values must be at least 1 and no more than 20% may be smaller than 5

The observations given are independent that is not equally likely i.e do not have equal chances of occurrences or are not dependent on each other.

4) the overall sample must be resonably large that is greater than 50

7 0
3 years ago
Factor the expression below.4x2 - 1
marusya05 [52]

Answer:

C. (2x – 1)(2x + 1)

Step-by-step explanation:

4x² – 1 = (2x)(2x) – 1 = (2x – 1)(2x + 1)

5 0
3 years ago
Read 2 more answers
Can you please help me
alexandr402 [8]

Answer:

D

Step-by-step explanation:

Every integer is a rational number.

8 0
3 years ago
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