3 years ago

A system of equations has infinitely many solutions. if 2y-4x=6 is one of the equations, which could be the other equations?

Mathematics

1 answer:

Romashka [77]3 years ago

8 0

You have to do rearranging formulae to find that out so basically solve for x

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Pwease help me anyone. thanks :-) :-) :-) :-) :-) :-) :-) :-)!!!!

adell [148]

A)
$x+3$

b)
$x(x+3)=340\\
x^2+3x-340=0$

c)
$x(x+3)=340\\ x^2+3x-340=0\\
\Delta=3^2-4\cdot1\cdot(-340)=9+1360=1369\\\sqrt{\Delta}=37\\
x_1=\dfrac{-3-37}{2}=-20\\
x_2=\dfrac{-3+37}{2}=17$

It's 17.

3 0

2 years ago

The area of a playground is 266 yd. The width of the playground is 5 yd longer than its length. Find th

Mademuasel [1]

Answer:

Step-by-step explanation:

The width is 5 yds longer so we can mark out b and d if you multiply 19 and 24 is 456 so you are left with C

5 0

2 years ago

If the lowest value of a data set increases what happens to the standard deviation

lara [203]

Answer:

It becomes lower

Step-by-step explanation:

This is because as the lowest value becomes larger, one of the values becomes closer to the mean, and as more numbers are closer to the mean, the standard deviation becomes lower.

4 0

3 years ago

Marshall invest $4500 into an account bearing 6% interest compounded semiannually. How much interest will be added into this acc

Sphinxa [80]

Answer:

$1547.62

Step-by-step explanation:

The principal Marshall invested is $4500.

The rate of interest is 6%

The compound interest formula is

$A=P(1+r)^n$