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3 years ago

Select the correct answer.

Mathematics

2 answers:

AlexFokin [52]3 years ago

6 0

I believe it is the one on the bottom left!

riadik2000 [5.3K]3 years ago

4 0

I’m pretty sure it’s y if not I’m sorry

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Four friends equally share the cost of their dinner that was $64 plus a 20% tip. If each person contributes $19, will that be en

Ulleksa [173]

If the dinner altogether costs £64, and there is a 20% tip, that brings the total amount paid to £76.80, and if four people are paying £19 towards the total, then there would not be enough for them to pay for both the meal and the tip, as 19x4 is 76, and the total is £76.80, meaning you need another 80 Pence.

Answer: No, as there is 80 pence off the total amount with all of there money added together which they would need to pay for the meal and the tip.

Hope this helps! Xo

4 0

3 years ago

Twice the difference between a number and 4 is twenty. Find the number.

kogti [31]

Answer:

D 14

Step-by-step explanation:

Let x be the number

2(x-4) = 20

Divide each side by 2

2/2(x-4) = 20/2

x-4 = 10

Add 4 to each side

x-4+4 = 10+4

x = 14

7 0

3 years ago

Read 2 more answers

Solve the initial value problems:<br> 1/θ(dy/dθ) = ysinθ/(y^2 + 1); subject to y(pi) = 1

ladessa [460]

Answer:

$-\theta cos\thsta+sin\theta = \frac{y^{2} }{2} + ln y + \pi - \frac{1}{2}$

Step-by-step explanation:

Given the initial value problem $\frac{1}{\theta}(\frac{dy}{d\theta} ) =\frac{ ysin\theta}{y^{2}+1 } \\$ subject to y(π) = 1. To solve this we will use the variable separable method.

Step 1: Separate the variables;

$\frac{1}{\theta}(\frac{dy}{d\theta} ) =\frac{ ysin\theta}{y^{2}+1 } \\\frac{1}{\theta}(\frac{dy}{sin\theta d\theta} ) =\frac{ y}{y^{2}+1 } \\\frac{1}{\theta}(\frac{1}{sin\theta d\theta} ) = \frac{ y}{dy(y^{2}+1 )} \\\\\theta sin\theta d\theta = \frac{ (y^{2}+1)dy}{y} \\integrating\ both \ sides\\\int\limits \theta sin\theta d\theta =\int\limits \frac{ (y^{2}+1)dy}{y} \\-\theta cos\theta - \int\limits (-cos\theta)d\theta = \int\limits ydy + \int\limits \frac{dy}{y}$

$-\theta cos\thsta+sin\theta = \frac{y^{2} }{2} + ln y +C\\Given \ the\ condition\ y(\pi ) = 1\\-\pi cos\pi +sin\pi = \frac{1^{2} }{2} + ln 1 +C\\\\\pi + 0 = \frac{1}{2}+ C \\C = \pi - \frac{1}{2}$

The solution to the initial value problem will be;

$-\theta cos\thsta+sin\theta = \frac{y^{2} }{2} + ln y + \pi - \frac{1}{2}$

5 0

2 years ago

en un examen de la universidad ,el número de ingresantes es al número de postulantes como 2 es a 9.Si de los ingresantes la octa

emmasim [6.3K]

Yo creo que serian 28

5 0

2 years ago

What is the measure of ea

Svetradugi [14.3K]

Check the picture below.

notice that the inscribed angle at C is intercepting the arcEAB, and since we know that the arcAB is 72°, then arcEA is arcEAB - arcAB, or 102 - 72.

5 0

2 years ago

Read 2 more answers