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aleksandr82 [10.1K]
2 years ago
13

Xyz for the given values of x=4/5, y=-15, z=7/8

Mathematics
1 answer:
zubka84 [21]2 years ago
3 0

Answer:

xyz = - \frac{21}{2}

Step-by-step explanation:

substitute the given values into the expression

xyz

= \frac{4}{5} × - 15 × \frac{7}{8}

= - 12 × \frac{7}{8}

= - 3 × \frac{7}{2}

= - \frac{21}{2}

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Inessa05 [86]

Answer:

The answer is the second one. "The distance decreases at a constant rate for the entire time"

Step-by-step explanation:

6 0
3 years ago
okay so the problem is "A circle is centered at the point (-3,2) and passes through the point (1,5). The radius of the circle is
Nesterboy [21]

Answer:

A circle is centered at the point (-3,2) and passes through the point (1,5). The radius of the circle is (5 ) units. the point (-7, -1) and point (-7, 5) lies in this circle.

Step-by-step explanation:

equation of circle is

(X-center_X)^2 + (y-center_Y)^2 = r^2

==> (x+3)^2 + (y-2)^2 = r^2

Now it passes 1,5 so

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==> r = 5

when x = -7

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5 0
3 years ago
Write 12,430,000 in expanded form
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5 0
4 years ago
31. Students are going through a three-step process to obtain their ID cards. Each student will spend 2 minutes at the registrat
mars1129 [50]

Answer:

The answer is 72 minutes.

Step-by-step explanation:

The first step will be the registration desk, which last 2 minutes.

The second step is going to one of the three cashiers, this step takes 10 minutes.

The third step is to visit one of the four ID processing stations, to take their picture and to print the ID card. this step take 20 minutes.

Demand rate= 0.5 students per minute

This means 1 student every 2 minutes.

The total amount of time of the three-step process  is 32 minutes.

During 40 minutes 20 students will start their process. These means that the student number 20 will start his/hers process at the minute number 40 of the whole process. As he/she is the last one, no one will finish their process before him/her.

The process takes 32 minutes.

We just need to add 40 minutes to the total amount of time of the three-step process takes, which is 32 minutes.

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Therefore to process 20 students it will take 72 minutes.  

7 0
4 years ago
25. The width of a rectangle is (x+1) and the length is (X-6). What is the length and width of the rectangle if the area is
Elis [28]

Answer:

x=−4 or x=9

Step-by-step explanation:

1- As we know the formula for Area of rectangle = length x width

2- Multiply given width = (x+1) with length = (x-6)

3-Equation will be (x+1)(x-6) = 30

4- Solving x^2−5 x−6  = 30

5- x^2−5 x -36 = 0

6-Factor left side of equation.

(x+4)(x−9)=0

Set factors equal to 0.

x+4=0 or x−9=0

6 0
3 years ago
Read 2 more answers
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