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3 years ago

-6x+7y=-8 and -2x-7y=16

Mathematics

1 answer:

finlep [7]3 years ago

5 0

Answer:

89!or 30/46%19

Step-by-step explanation:

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Suppose your friends parents invest $15,000 in an account paying 6% compounded annually. What will be the balance after 9 years

JulijaS [17]

A = 15000(1.04)6 .........You can put this into your calculator such that it becomes
A = $18,979.79

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3 years ago

Simple math my tiny brain can’t understand PLEASE HELP

gogolik [260]

Answer:

if im not mistaken its 143

8 0

3 years ago

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Cot^2x/cscx-1=1+sinx/sinx

KATRIN_1 [288]

$\bf \textit{difference of squares}
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(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)
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sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)\\\\
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\cfrac{cot^2(x)}{csc(x)-1}=\cfrac{1+sin(x)}{sin(x)}\impliedby \textit{let's do the left-hand-side}$

$\bf \cfrac{\quad \frac{cos^2(x)}{sin^2(x)}\quad }{\frac{1}{sin(x)}-1}\implies \cfrac{\quad \frac{cos^2(x)}{sin^2(x)}\quad }{\frac{1-sin(x)}{sin(x)}}\implies \cfrac{cos^2(x)}{sin^2(x)}\cdot \cfrac{sin(x)}{1-sin(x)}
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5 0

3 years ago

Find the zero of the following function: f(×)=(×-1)/(×-3)

nlexa [21]

Answer:

$\boxed{\sf \ \ x = 1 \ \ }$

Step-by-step explanation:

Hello,

First of all we need to take x different from 3 as dividing by 0 is not allowed

then for x real different from 3

$f(x)=0\\\\ \dfrac{x-1}{x-3}=0\\\\ x-1 = 0\\\\ x = 1$

hope this helps

6 0

4 years ago

Read 2 more answers

The lcm of 165xy and 77x 3 y is _____. 1,155x 3y 11xy 12,705x 4y 2 105x 3y

trapecia [35]

The least common multiple (LCM) can be determined by factoring out the terms first,
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77x³y = (7)(11)(x)(x)(x)(y)
Copy the factors writing off the repeated factors only once,
LCM = (3)(11)(5)(x)(y)(7)(x)(x)= 1155x³y
The answer is 1155x³y (first choice)

4 0

3 years ago

Read 2 more answers