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2 years ago

What is x+87.39=284.9643

Mathematics

1 answer:

Illusion [34]2 years ago

3 0

Answer:

x=4.956 im pretty sure

Step-by-step explanation:

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Which table represents a function? PLS PLS HELP FAST

Dominik [7]

Answer:

Step-by-step explanation:

Inside a function, a certain unique input cannot ever have more than one output. All of the other tables have more than one output for only one input.

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2 years ago

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Evaluate S5 for 300 + 150 + 75 + … and select the correct answer below. 18.75 93.75 581.25 145.3125

Savatey [412]

we have that

$300 + 150 + 75 +...$

Let

$a1=300\\ a2=150\\ a3=75$

we know that

$\frac{a2}{a1} =\frac{150}{300} \\\\ \frac{a2}{a1}=0.5 \\ \\ a2=a1*0.50$

$\frac{a3}{a2} =\frac{75}{150} \\\\ \frac{a3}{a2}=0.5 \\ \\ a3=a2*0.50$

$a(n+1)=an*0.50$

Is a geometric sequence

Find the value of $a4$

$a(4)=a3*0.50$

$a(4)=75*0.50$

$a(4)=37.5$

Find the value of $a5$

$a(5)=a4*0.50$

$a(5)=37.5*0.50$

$a(5)=18.75$

Find $S5$

$S5=a1+a2+a3+a4+a5\\ S5=300+150+75+37.5+18.75\\ S5=581.25$

therefore

the answer is

$581.25$

Alternative Method

Applying the formula

$S_n=\frac{a_1 (1-r^n)}{1-r} \\\\a_1=300 \\ r=\frac{1}{2}\\\\ S_5=\frac{300(1-(\frac{1}{2})^5)}{1-\frac{1}{2}}\\\\=\frac{300(1-\frac{1}{32})}{\frac{1}{2}}\\\\=\frac{300 \times \frac{31}{32}}{\frac{1}{2}}\\\\=\frac{75 \times \frac{31}{8}}{\frac{1}{2}}\\\\=\frac{\frac{2325}{8}}{\frac{1}{2}}\\\\=\frac{2325}{8} \times 2\\\\=\frac{2325}{4}\\\\=581 \frac{1}{4}\\\\=581.25$

therefore

the answer is

$581.25$

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2 years ago

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Help me please I don’t have much time!!! I don’t understand this

xeze [42]

The answer is choice C

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2 years ago

A school typically sells 500 year books in a year for $50 each. the economics class does a project and discovers that they can s

zysi [14]

The answer is $40

500*50x=25,000

625*40x=25,000

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2 years ago

Write an equation for the line that passes through the given point and is perpendicular to the graph of the given equation.

Nezavi [6.7K]

Answer:

y + 2 = - 3/2(x - 4)

Step-by-step explanation:

Given line:

y + 4 = 2/3(x - 2)

It has a slope of 2/3.

Perpendicular lines have negative-reciprocal slopes, so the perpendicular slope is:

m = - 3/2

Find its equation provided it passes through the point (4, - 2):

y - (-2) = - 3/2(x - 4)
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1 year ago