All categories

4 years ago

4x+2y=2 3x+y=4 explain how you got the answer pls answer it is a timed test

Mathematics

2 answers:

valina [46]4 years ago

7 0

Answer:

1. if you solve for y you will get y=−2x+1 and if you solve for x then you get x= −1 2 y+ 1 2

SECOND ONE IDK

Alex_Xolod [135]4 years ago

7 0

Answer:

x = 3, y = -5 ( 3, -5)

Step-by-step explanation:

<h2>substitution </h2>

4x+2y=2 subtract 4x

2y = - 4x + 2 divide by 2

y = -2x + 1

Plug in y = -2x + 1 for y in the equation 3x+y=4 to find x value

3x+2x + 1=4 combine like terms

x + 1 = 4 make x alone/ subtract 1 from both sides

x = 3

Plug in x=3 into y = -2x + 1 to find y value

y = -2(3) + 1 multiply -2 by 3

y = -6 +1 combine like terms

y = -5

I hope this wasn't too late and helped! :)

You might be interested in

-6(x + 1) < 2(x + 5)<br> how do you solve this

Jobisdone [24]

Answer and work down below

3 0

4 years ago

What is the completely simplified form of the expression 2(1 – 3x) – (5x + 1)?

Nady [450]

Answer:

i think it's 11x-1

Step-by-step explanation:

2(1-3x)-(5x+1)

2-6x-5x-1

2-11x-1

11x-1

3 0

3 years ago

The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained

poizon [28]

Answer:

a. $H_{0}:$ u1≤u2

$H_{a} :u1>u2$

b P<0.05 rejected H

Step-by-step explanation:

College High School

485 442

534 580

650 479

554 486

550 528

572 524

497 492

592 478

487 425

533 485

526 390

410 535

515

578

448

469

The mean is the average . the sum of number over the number of observation

x1=525

x2=487

s.d1=59.42

s.d2=51.74

n1=16

n2=12 $\alpha =0.05$

Determine the hypothesis

$H_{0}:$ u1≤u2

$H_{a} :u1>u2$

find the degree of freedom $(\frac{s1^2}{n1} +\frac{s2^2}{n2} )^2/(\frac{s1^2}{n1} )^2/n1-1+(s2^2/n2)^2/n2-1\\\\(\frac{59.42^2}{16} +\frac{51.7476^2}{12} )^2/(\frac{59.42^2}{16} )^2/16-1+(51.74^2/12)^2/12-1$

p-value is the probability of obtaining the value of the test statistics. In the column of t-value in the row df=25

0.025<P<0.05

if the P value is actually less than or the same as the significant level, then the null hypothesis is rejected

P<0.05 rejected H

8 0

3 years ago

Consider the function f(x) = x2 + 2x – 35. If one of the zeros of the

Whitepunk [10]

If one zeros is x= -7 then the other zero is x=5

Step-by-step explanation:

We are given the function: $f(x) = x^2 + 2x-35$

If one zeros of the function is x=-7 we need to find other zero of the function.

We can find zeros of the quadratic equation by factorizing the equation

$f(x) = x^2 + 2x-35$

Factorizing the quadratic equation:

$x^2 + 2x-35=0\\x^2-5x+7x-35=0\\x(x-5)+7(x-5)=0\\(x+7)(x-5)=0\\x+7=0\,\,and\,\,x-5=0\\x=-7\,\,and\,\,x=5$

So, if one zeros is x= -7 then the other zero is x=5

Keywords: Solving Quadratic Equation

Learn more about Solving Quadratic Equation at:

#learnwithBrainly

8 0

3 years ago

Which equation represents the proportional relationship in the table ?

den301095 [7]

C=3r

hope this helps!

3 0

3 years ago

Read 2 more answers