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3 years ago

Whats the answer for 2x+3y=-13 I would appreciate all of the work please and thank you

Mathematics

2 answers:

Artemon [7]3 years ago

8 0

Answer: X=2 and y=3

Step-by-step explanation: 2x2=4 and 3x3=9 and 9+4=13

dlinn [17]3 years ago

3 0

She is right just do what she said and you should be fine

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vesna_86 [32]

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3 years ago

A sound wave has a frequency of 125 Hz and a speed 5000 m/s What is the wavelength of the wave

kipiarov [429]

The wave length of the sound with parameters frequency of 125 Hz and a speed 5000 m/s is 40 meters

<h3>Given Data</h3>

velocity = 5000 m/s

frequency = 125 Hz

wavelength = ??

We know that the relationship between speed, frequency and wavelength is given as

v = fλ ----------------------------1

substitute our given parameters

5000 = 125 * λ

Divide both sides by 125

λ = 5000/125

λ = 40 m

Hence the wave length of the sound is 40 meters

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5 0

3 years ago

Solve the system of equations using substitution<br> 4x + 2y = 16<br> =−12+5

mario62 [17]

Answer:

$x=\frac{70}{11},\:y=\frac{20}{11}$

Step-by-step explanation:

$\begin{bmatrix}4x+2y=16y\\ y=-\frac{1}{2}x+5\end{bmatrix}$

$\mathrm{Substitute\:}y=-\frac{1}{2}x+5$

$\begin{bmatrix}4x+2\left(-\frac{1}{2}x+5\right)=16\left(-\frac{1}{2}x+5\right)\end{bmatrix}$

$Simplify$

$\begin{bmatrix}3x+10=16\left(-\frac{1}{2}x+5\right)\end{bmatrix}$

Isolate x for 3x+10=16(-1/2x+5): $x=\frac{70}{11}$

$\mathrm{For\:}y=-\frac{1}{2}x+5$

$\mathrm{Substitute\:}x=\frac{70}{11}$

$y=-\frac{1}{2}\cdot \frac{70}{11}+5$

$-\frac{1}{2}*\frac{70}{11}+5=\frac{20}{11}$

$y=\frac{20}{11}$

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$x=\frac{70}{11},\:y=\frac{20}{11}$

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3 years ago

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Zigmanuir [339]

Answer: Answer is on first screenshot

Step-by-step explanation:

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2 years ago

Combining like terms although there has to be two terms<br> y-9+y-4

liberstina [14]

Answer:

2y - 13

Step-by-step explanation:

y - 9 + y - 4

2y - 9 - 4

2y - 13

3 0

3 years ago

Read 2 more answers