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AlekseyPX
3 years ago
8

Which equation shows a line that is perpendicular to the line

Mathematics
1 answer:
maksim [4K]3 years ago
3 0
I think it’s the one that has the slope -1/2
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X=6<br> y=2x-3<br><br> i’m doing Solve Systems of Equations by Substitution.
Oksana_A [137]

y=9

Step-by-step explanation:

y=2(6)-3

y=12-3

y=9

4 0
2 years ago
Read 2 more answers
Find an exact value. Cos 75° negative square root of six plus square root of two quantity square root of six minus square root o
ehidna [41]

Answer:

√2(√3 - 1)/4

Step-by-step explanation:

To find an exact value for Cos75°, we use the compound angle formula. Since 75° = 45° + 30°, Cos75° = Cos(45° + 30°).

Using Cos(A + B) = CosACosB - SinASinB where A = 45° and B = 30°,  

Cos75° = Cos(45° + 30°) = Cos45°Cos30° - Sin45°Sin30°

Now Cos45° = Sin45° = 1/√2 = √2/2, Cos30° = √3/2 and Sin30° = 1/2.

Substituting these values into the above equation, we have

Cos75° = Cos(45° + 30°)

= Cos45°Cos30° - Sin45°Sin30°

= √2/2 × √3/2 -  √2/2 × 1/2

= √6/4 -√2/4

= √2(√3 - 1)/4

6 0
3 years ago
Find 2.2℅ of 18 2/11?
UNO [17]
The answer to ur question is 0.396
2.2% * 18 = 0.396
7 0
3 years ago
Read 2 more answers
Point B lies on Ac between A and C if AB=3 and AC=14 find BC<br><br> Please help
vovangra [49]
1000000.6 because I need sum points cuhhhhh
6 0
2 years ago
Question: Antonio is working with a new geometric series generated by the equation A(n)=20(1.1)^n-1.His sister challenged him to
Mekhanik [1.2K]

Answer:

sum of 22nd = 1,428.05

sum of 23 to 40 is 932.53

Step-by-step explanation:

A(n)=20(1.1)^n-1

20 is the first term or a1

1.1 is the common ratio or r

A(22) = 20(1.1)^22-1

22nd term = 20(1.1)^21

22nd term = 148.00

sum of geometric sequence

formula

Sn = a1(1-r^n)/1-r

Sn = sum

a1 = first term

n = number of term

r = constant ratio

sum of 22nd = 1,428.05.

23 to 40 is 17 terms

Sequence: 23, 25.3, 27.83, 30.613, 33.6743, 37.04173, 40.745903 ...

The 17th term: 105.684378686

Sum of the first 17 terms: 932.528165548

socratic

miniwebtoolcomgeometricsequencecalculator

6 0
2 years ago
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