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zhuklara [117]
3 years ago
5

Problems that are not answered I need help with quickly!

Mathematics
1 answer:
Anika [276]3 years ago
7 0
Whats the problem? just substitute. For example: 3x-5 if x=4 so what you do is this; 3(4)-5=7
You might be interested in
PLEASE HELP ON THIS MATH PROBLEM
gogolik [260]

Answer:   y = -10 sin (πx) + 4

<u>Step-by-step explanation:</u>

y = A sin (Bx - C) + D

  • Amplitude: A
  • Period = 2π/B    --->    B = 2π/Period
  • Phase Shift = C/B  --> C = B · Phase Shift
  • D: midline, vertical shift

Given:

  • A = 10
  • B = 2π/2 = π
  • C = B · 0 = 0
  • D = 4
  • reflection over x- axis

Equation:

    y = -10 sin (πx - 0) + 4

5 0
3 years ago
Solve this for me 15x+82= 20x +12<br>​
Lina20 [59]

Answer:

here

Step-by-step explanation:

15x-20x= -82+12=>

=> - 5x= -70=>

= x= 14

8 0
3 years ago
In an arithmetic sequence, t4 + t5 + t6 = 300, and t15 +t16+ t17 = 201. Find t18.
stiks02 [169]
In an arithmetic sequence:
Tn=t₁+(n-1)d

t₄=t₁+(4-1)d=t₁+3d
t₅=t₁+(5-1)d=t₁+4d
t₆=t₁+(6-1)d=t₁+5d

t₄+t₅+t₆=(t₁+3d) +(t₁+4d)+(t₁+5d)=3t₁+12d

Therefore:
3t₁+12d=300    (1)


t₁₅=t₁+(15-1)d=t₁+14d
t₁₆=t₁+(16-1)d=t₁+15d
t₁₇=t₁+(17-1)d=t₁+16d

t₁₅+t₁₆+t₁₇=(t₁+14d)+(t₁+15d)+(t₁+16d)=3t₁+45d

Therefore:
3t₁+45d=201    (2)

With the equations (1) and (2) we make an system of equations:

3t₁+12d=300
3t₁+45d=201

we can solve this system of equations by reduction method.

  3t₁+12d=300
-(3t₁+45d=201)
-----------------------------
       -33d=99      ⇒d=99/-33=-3

3t₁+12d=300
3t₁+12(-3)=300
3t₁-36=300
3t₁=300+36
3t₁=336
t₁=336/3
t₁=112

Threfore:

Tn=112+(n-1)(-3)
Tn=112-3n+3
Tn=115-3n

Now, we calculate T₁₈:

T₁₈=115-3(18)=115-54=61

Answer: T₁₈=61




5 0
3 years ago
How much greater was Maiami’s annual rainfall than Albany’s Albany 46.92 miami61.05
Ilia_Sergeevich [38]

Answer:

52.94

Step-by-step explanation:

61.06

-46.92

=52.94

<em>just</em><em> </em><em>subtract</em><em> </em><em>them</em><em> </em><em>like</em><em> </em><em>the</em><em> </em><em>.</em><em> </em><em>isn't</em><em> </em><em>even</em><em> </em><em>there</em><em>.</em>

5 0
3 years ago
Find the distance between the points (3,2) and (8,10)
nadezda [96]

Answer:

8/5

Step-by-step explanation:

(y2-y1) / (x2-x1)

10-2 = 8

8-3 = 5

8/5

6 0
2 years ago
Read 2 more answers
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