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nalin [4]
4 years ago
7

How many solutions does the system of equations have?

Mathematics
1 answer:
SIZIF [17.4K]4 years ago
8 0
The answer is d) none because substituting -1/4x + 5/3 for y in the first equation gives 3x - 3x + 5/3 = 20 so 5/3 = 20 which is not true. 
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35x+19−320x−7 simplified is
Masteriza [31]
The answer is:
285x+12
7 0
4 years ago
(worth a lot of points)<br> Please help! my whole grade DEPENDS on you!
mylen [45]

Answer:

1 ) 49,062.5 feet square

2) 64 π inch square .

3) 9 π meter square .

4)  289 π ft square.

5) 225 π cm square .

Step-by-step explanation:

1) From the above figure we can see that diameter of pond is given as 250 ft.

So we easily calculate the area of circular pond by using the area formula of circle.

AREA = \frac{\pi }{4}  * diameter^{2}

           = 0.785 × 250 × 250 ft square

            = 49,062.5 ft square .

2) In the second figure diameter is given  as 16 inches .

   AREA = \frac{\pi }{4}  * diameter^{2}

                = \frac{\pi }{4}  * 16^{2}

                 = 64 π inch square .

3) Here the diameter is given as 6 m .

   AREA = \frac{\pi }{4}  * diameter^{2}

               = 9 π meter square .

4) Here the radius is 17 ft .

   AREA = π × radius ×radius

               = π × 17 × 17 ft. square .

               = 289 π ft square.

5) Here the radius is give as 15 cm.

AREA = π × radius ×radius .

             = π × 15 × 15 cm square .

              = 225 π cm square .

3 0
3 years ago
PLZZZZZZZZZZZZZ HELPPPPPPPPP
12345 [234]

Answer:

Given, Distributive property, Subtraction Property, Division Property, Prove

Step-by-step explanation:

This is what I think the answer is. So if the answer is wrong than I don't know

5 0
3 years ago
A math class's mean test score is 88.4. The standard deviation is 4.0. If Kimmie scored 85.9, what is her z-score
kvv77 [185]

The z-score of Kimmie is -0.625

<h3>Calculating z-score</h3>

The formula for calculating the z-score is expressed as;

z = x-η/s

where

η is the mean

s is the standard deviation

x is the Kimmie score

Substitute the given parameter

z = 85.9-88.4/4.0

z = -2.5/4.0

z = -0.625

Hence the z-score of Kimmie is -0.625

Learn more on z-score here: brainly.com/question/25638875

#SPJ1

5 0
2 years ago
Write an expression to represent:<br> Eight less than the product of 2 and a number z.
seropon [69]
(2z) - 8 This is because you are subtracting eight from
The product of 2 and z.
8 0
3 years ago
Read 2 more answers
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