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Sati [7]
4 years ago
10

Add the equations. 3x - y = -1 - 3x + 3y= 27

Mathematics
1 answer:
harkovskaia [24]4 years ago
3 0

Step-by-step explanation:

3x - 3x -y + 3y = 27-1

2y = 26

y = 13 use this to find the value of x

3x - 13 = -1

3x = -1 + 13

3x = 12

x = 4

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87th term of 12,0,-12
Elan Coil [88]

Answer:

a_{87} = -1020

Step-by-step explanation:

Given:

The given AP is.

12,0,-12,......

n=87

The first term of an AP a=12

Common difference d=0-12=-12

We use the the formula for nth term of an AP.

a_{n} = a+(n-1)d

for 87th term

a_{87} = 12+(87-1)(-12)

a_{87} = 12+(86)(-12)

a_{87} = 12+(-1032)

a_{87} = 12-1032

a_{87} = -1020

Therefore, The 87th term of given series is -1020.

5 0
3 years ago
A swimming pool, in the shape of a rectangular prism, is 50 meters long, 25 meters wide, and 3 meters deep. A liter is the same
Vera_Pavlovna [14]
To find liters from meters, multiply the meters by 1000. 1 meter equals 1000 liters. So, the answer would be 375000 from 3,750. 

P.S. IF you meant 750, then it's 750000
6 0
4 years ago
Read 2 more answers
In ΔUVW, the measure of ∠W=90°, UV = 6.2 feet, and WU = 1.2 feet. Find the measure of ∠V to the nearest tenth of a degree.
Crazy boy [7]

Answer:

m<V = 11.2 degrees

Step-by-step explanation:

In ΔUVW, the measure of ∠W=90°, UV = 6.2 feet, and WU = 1.2 feet.

From the triangle;

UV = hypotenuse = 6.2feet

WU = opposite = 1.2feet

Required

m<V

Using the SOH CAH TOA identity

sin m<V = opp/hyp

sin m<V = WU/UV

sin m<V = 1.2/6.2

sin m<V = 0.1936

m<V = arcsin(0.1936)

m<V = 11.16

m<V = 11.2 degrees ((to the nearest tenth of a degree)

4 0
3 years ago
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Is 0.05=1/2 correct?
BlackZzzverrR [31]

Answer:

No

Step-by-step explanation:

To convert a decimal to a fraction you multiply by one hundred. Then, you write that number as a fraction over 100 and simplify. Eg 0.5×200 = 50 , 50/100 simplifies to 1/2. Therefore 0.05 as a fraction is 0.05×100 = 5, 5/100 simplified = 1/20

4 0
3 years ago
Plez help with mathamaticas
AlexFokin [52]

A. is correct! Good job!

8 0
4 years ago
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