Mathematics : asked on taniyasmith

04.03.2022

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

0

Step-by-step answer

09.07.2023, solved by verified expert

Mathematics, DAV Post Graduate College

6 770 answers

Unlock the full answer

Step-by-step explanation:

Isolate y for 2y+77=-5:

Isolate x for -205-7x=1272

It is was helpful?

Helpful Useless

Faq

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

Neil places £2000 in a bank account that pays 1.5% simple interest per year. How much interest will he earn in 6 years?

Step-by-step answer

P Answered by PhD

SI=(P*R*T)/100

P=2000

R=1.5

T=6

SI=(2000*1.5*6)/100

=(2000*9)/100

=180

Neil will earn interest of 180

Mathematics

The last time Robert filled up his car with gas, he paid $24.50 for 7 gallons. This time, he needs 15 gallons. If the price is the same, how much will he pay?

Step-by-step answer

P Answered by PhD

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5

Mathematics

An ice cream shop offers 5 different flavors of ice cream and 9 different toppings. How many choices are possible for a single serving of ice cream with one topping?

Step-by-step answer

P Answered by PhD

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45

Mathematics

The value of a collectible coin can be represented by the equation y = 2 x + 15, where x represents its age in years and y represents its total value in dollars. What is the value of the coin after 19 years? $2 $23 $38 $53

Step-by-step answer

P Answered by PhD

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

Mathematics

A 4300-N force from a car s engines produces an acceleration of 3.3 m/s2. What is the mass of the car? A. 4300 kg B. 1300 kg C. 14,000 kg D. 390 kg

Step-by-step answer

P Answered by PhD

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

=4300/3.3

=1303.03kg

Mathematics

Which number is the smallest? 4.4 ⋅ 10−5, 3.99 ⋅ 10−6, 2.6 ⋅ 102, 1.85 ⋅ 103

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

Stefania pure 2 liters of orange juice and 1.5 liters of pineapple juice into a punch bowl how many kiloliters are in the punch bowl

Step-by-step answer

P Answered by PhD

The answer is in the image

The answer is in the image

free Ask question

Today we have helped

1 410 students

just now

Mathematics

Is ab = a when b = 3, always, sometimes, or never true? Explain your answer.

m Answered by Master

1 minute ago

Spanish

Pizarro conquered the Mayan Empire:
True
False

p Answered by PhD

1 minute ago

Biology

I need help with filling out the attached chart,

m Answered by Master

1 minute ago

Mathematics

Solve for x: -3x +10 = 31

p Answered by PhD

2 minutes ago

Mathematics

A survey was conducted to find the frequency with which people go to the movies. A group of 120 people in a mall were asked about how often they go out for a movie and It was found that 36 people go to movies at least once in a month. Which of these is an example of descriptive statistics

p Answered by PhD

Get help with homework

What is Studen

Studen helps you with homework in two ways:

Our base includes complete solutions from various experts

chat

Leave a question

Studen will automatically choose an expert for you.

directly

We have more than 5 000 verified experienced expert