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3 years ago

8

In Evan's white gold wedding ring, the ratio of nickel to gold is 3 to 13. If the ring contains 4.16 oz of gold, how much nickel

does it contain?

1 answer:

Elenna [48]3 years ago

3 0

Answer:

.96

Step-by-step explanation:

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5 - y = 27<br><br><br>Answer as fast as u can

Trava [24]

Answer:

Its -22

Step-by-step explanation:

you do 27 - 5 = 22 then add negative sign in front of 22 and then check by doing 5 - -22 and you get 27

can you pleaseeeeeee mark me brainliest :)

7 0

3 years ago

Last year a community had 32 incidents of vandalism. This year they had 23 incidents of vandalism. What is he percent of decreas

Bogdan [553]

He's percent of decreased, will be .72% or 72% decrease.

7 0

4 years ago

Q8 Q3.) Solve the system by the substitution method.

inn [45]

Recall that $(x+y)^2=x^2+2xy+y^2$ . So we can add twice the first equation to the second one to get

$x^2+y^2+2xy=10+2\cdot3\iff(x+y)^2=16\implies x+y=\pm4$

Since $xy=3$ , we have $y=\dfrac3x$ $(x\neq0)$ so

$x+y=x+\dfrac3x=\pm4\implies x^2\mp4x+3=0$

If $x+y=4$ , then

$x^2-4x+3=(x-3)(x-1)=0\implies x=3,x=1\implies y=1,y=3$

If $x+y=-4$ , then

$x^2+4x+3=(x+1)(x+3)=0\implies x=-1,x=-3\implies y=-3,y=-1$

So the solution set is

$(x,y)\in\{(-3,1),(1,3),(-1,-3),(-3,-1)\}$

3 0

3 years ago

HIII PLEASE PLEASE HELP

Solnce55 [7]

8. length is 4 feet

9. width is 8 inches

20. this one could be l=6 and w=8 or l=4 and w=12 because I don't know which side of the rectangle her garage is

4 0

3 years ago

Match each given domain of the function f(x)=2/2.5 with its corresponding range.

mamaluj [8]

$f(x)=\dffrac{x}{2.5}$

$\text{Domain:}\{40,\ 45,\ 50,\ 55,\ 60\}\\\\f(40)=\dfrac{40}{2.5}=16\\\\\text{Range:}\{16,\ 18,\ 20,\ 22,\ 24\}\\----------------------------\\\text{Domain:}\{52,\ 56,\ 63,\ 67,\ 71\}\\\\f(16)=\dfrac{52}{2.5}=20.8\\\\\text{Range:}\{20.8,\ 22.4,\ 25.2,\ 26.8,\ 28.4\}\\----------------------------$

$\text{Domain:}\{37,\ 46,\ 49,\ 55,\ 57\}\\\\f(37)=\dfrac{37}{2.5}=14.8\\\\\text{Range:}\{14.8,\ 18.4,\ 19.6,\ 22,\ 22.8\}\\----------------------------\\\text{Domain:}\{44,\ 51,\ 59,\ 66,\ 73\}\\\\f(44)=\dfrac{44}{2.5}=17.6\\\\\text{Range:}\{17.6,\ 20.4,\ 23.6,\ 26.4,\ 29.2\}\\----------------------------$

7 0

4 years ago