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noname [10]
3 years ago
7

X+2y+z=5 2x-y+z=4 3x+y+4z=1

Mathematics
1 answer:
Bingel [31]3 years ago
8 0
X=1.5, y=2.5,z=-1.5 I used matrices to solve it.
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A playground measures 300 m × 170 m.Find the cost of planting grass on this at the rate of Rs 80 per hectare.​
Ierofanga [76]
<h2><u>Answer</u> :-</h2>

To find the cost of planting grass , we have to find area of the field.

Area of field = Length × Breadth

{= 300×170}

{=51000 sq. m}

Now convert into hectare.

1 hectare = 10000m sq.

51000 / 10000

So area field = 5.1 hectare sq.

Now cost = 5.1 x 0.80 p

{= 0.408 p}

<h2><u>___________</u></h2>
7 0
3 years ago
Can someone do this for me and if so marking brainliest. Urgent
8_murik_8 [283]

Answer:

1. 1/3, 4

2. 3/5, -2

3. 4, 1

4. -3/2, 3

5. 1, 4

Step-by-step explanation:

- The slope is x and to find it do (rise over run) for example 5/3, but since it is done for you that is not needed. That was just a reference.

- The y-intercept is where the number hits the y-axis when at 0.

6 0
3 years ago
5-10/8=<br><br> 3 6/8<br> 4 6/8<br> 3 2/8<br> 6 2/8
Oksi-84 [34.3K]

Answer:

3 6/8

Step-by-step explanation:

5 = 5

10/8 = 1 2/8

5 - 1 = 4

4 - 2/8 = 3 6/8

7 0
3 years ago
Read 2 more answers
WILL GIVE YOU 50 POINTS
irinina [24]

Answer:

Step-by-step explanation:

8 0
3 years ago
How else can the ratio 4⁄5 be written? <br><br>        A. .2   B. 5⁄4   C. 5:4   D. 4:5
Y_Kistochka [10]
\frac{x}{y} will be either x to y or x : y
so,
\frac{4}{5} will be 4 :5

Answer is: D. 4 : 5
8 0
3 years ago
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