Mathematics : asked on taniyasmith

04.03.2022

Solve the system of equations. 2y + 77 = -5 5y – 7x = 12 72

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09.07.2023, solved by verified expert

Mathematics, DAV Post Graduate College

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Step-by-step explanation:

Isolate y for 2y+77=-5:

Isolate x for -205-7x=1272

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Mathematics

Solve the system of equations. 2y + 77 = -5 5y – 7x = 12 72

Step-by-step answer

P Answered by Master

$y=-41,\:x=-211$

Step-by-step explanation:

$\begin{bmatrix}2y+77=-5\\ 5y-7x=1272\end{bmatrix}$

Isolate y for 2y+77=-5:

y=-41

$\mathrm{Substitute\:}y=-41$

$\begin{bmatrix}5\left(-41\right)-7x=1272\end{bmatrix}$

Simplify

$\begin{bmatrix}-205-7x=1272\end{bmatrix}$

Isolate x for -205-7x=1272

x=-211

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

$y=-41,\:x=-211$

Mathematics

Which of these strategies would eliminate a variable in the system of equations? begin{cases} -7x + 2y = 5 3x - 5y = -5 end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ −7x+2y=5 3x−5y=−5 Choose all answers that apply: Choose all answers that apply: (Choice A) A Add the equations. (Choice B) B Multiply the top equation by 333, multiply the bottom equation by 777, then add the equations. (Choice C) C Multiply the top equation by 555, multiply the bottom equation by 222, then add the equations.

Step-by-step answer

P Answered by Master

I want you to c*u*m on me then in me daddy

Step-by-step explanation:

$Which of these strategies would eliminate a variable in the system of equations? \begin{cases} -7x$
$Which of these strategies would eliminate a variable in the system of equations? \begin{cases} -7x$
$Which of these strategies would eliminate a variable in the system of equations? \begin{cases} -7x$

Mathematics

Which of these strategies would eliminate a variable in the system of equations? begin{cases} -7x + 2y = 5 3x - 5y = -5 end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ −7x+2y=5 3x−5y=−5 Choose all answers that apply: Choose all answers that apply: (Choice A) A Add the equations. (Choice B) B Multiply the top equation by 333, multiply the bottom equation by 777, then add the equations. (Choice C) C Multiply the top equation by 555, multiply the bottom equation by 222, then add the equations.

Step-by-step answer

P Answered by Master

I want you to c*u*m on me then in me daddy

Step-by-step explanation:

$Which of these strategies would eliminate a variable in the system of equations? \begin{cases} -7x$
$Which of these strategies would eliminate a variable in the system of equations? \begin{cases} -7x$
$Which of these strategies would eliminate a variable in the system of equations? \begin{cases} -7x$

Mathematics

You can buy jars of the same jam in 2 sizes large jar:440g for £1.54 small jar:340g for £1.26 By considering the price per gram, work out which jar is the best value for money. Working must be shown

Step-by-step answer

P Answered by PhD

Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram

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Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

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Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

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Step-by-step answer

P Answered by PhD

The solution is in the following image

The solution is in the following image

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Step-by-step answer

P Answered by PhD

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

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Therefore, till now 8 pieces have been made.

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Step-by-step answer

P Answered by PhD

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Step-by-step answer

P Answered by PhD

tip=18% of 75.45

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Tip = $13.581

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