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tiny-mole [99]
3 years ago
9

In 2 hours (x) Frank earned $31(y). In 4 hours he earned $62

Mathematics
1 answer:
zubka84 [21]3 years ago
7 0
Explanation:
In 2 hours (x) Frank earned $31(y)
In 4 hours (x) Frank earned $62(y)

2x = 31y
31 / 2 = 15.5
4x = 15.5 x 4 = 62y
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55% of what number is 70? Round to the nearest tenth.
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55% of x is 70
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Jake studied x hours for a big test. Julie studied half as long. Write an algebraic expression for long julie studied.
kipiarov [429]
X/2 is howling Julie studied
6 0
3 years ago
Please try to help if you can.
PolarNik [594]

The equation of the sinusoidal function is y = -2sin(x + 1.5) - 3

<h3>The sinusoidal function</h3>

The minimum and the maximum of the function are

  • Minimum = -1
  • Maximum = -5

The amplitude (A) is calculated as:

A = 0.5 * (Maximum - Minimum)

So, we have:

A = 0.5 * (-5 + 1)

A = -2

The vertical shift (d) is calculated as:

d = 0.5 * (Maximum + Minimum)

So, we have:

d = 0.5 * (-5 - 1)

d = -3

The period (P) is calculated as:

P = 2π/B

From the graph,

B = 1

So, we have:

P = 2π/1

P = 2π

So, the amplitude is -2 and the period is 2π.

<h3>The equation of the sine function</h3>

In (a), we have:

A = -2

B = 1

d = -3

A sine function is represented as:

y = A sin(Bx + C) + D

So, we have:

y = -2sin(x + C) - 3

The graph passes through the point (0, -5)

So, we have

-5 = -2sin(0 + C) - 3

Solve for C, we have

C = 1.5

So, we have:

y = -2sin(x + 1.5) - 3

Hence, the equation of the sinusoidal function is y = -2sin(x + 1.5) - 3

Read more about sinusoidal function at

brainly.com/question/10700288

#SPJ1

7 0
1 year ago
Plz Help me
Dafna1 [17]

Answer:

6/0

Step-by-step explanation:

Step 1: Label your x and y's

(0,-11) (0, 5)

x1 y1  x2 y2

Step 2: Plug in your x1, x2, y1, and y2 into the slope formula

The slope formula is y1 -y2/ x1 - x2

-5-(-11)/ 0 = 6/0

Undefined

6 0
3 years ago
Convert the percent to a decimal, and then divide. 7% ÷ 4
Inessa05 [86]
7% = 0.07
0.07/4 = 0.0175

The answer is 0.0175
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3 years ago
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