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nadya68 [22]
3 years ago
12

HELP ASAPPPPPPPPPPPPPPP

Mathematics
1 answer:
Marina CMI [18]3 years ago
7 0

Answer:

x = 3 or -3

Step-by-step explanation:

8 - x = 5           or         8 + x = 5

-x = -3              or         x = -3

x = 3                 or        x = -3

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Plane tickets to Chicago usually cost $120. On a travel deal website, you scored a coupon for 35% off. Your budget for the trip
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Answer: yes it’s 78$

Step-by-step explanation: The difference is 42.00

4 0
2 years ago
Determine the constant of proportionality in each of the representations below.
cluponka [151]

Answer:

Pretty sure is 15

Step-by-step explanation:

90 divided by 6 is 15.

7 0
3 years ago
Read 2 more answers
The mass of the sun is 21.3525×102921.3525×1029 kg. the mass of mercy is 328.5×1021328.5×1021 kg.how many times larger is the ma
Liono4ka [1.6K]
This is basically a simple problem to understand. The only thing that needs to be done is to divide the mass of the sun by the mass of mercury. It will give the required result.

Number of times the mass of sun is greater than
the mass of mercury =  21.3525×102921.3525×1029/<span>328.5×1021328.5×1021
                                  = </span><span>7.1783629e+15
I hope that this is the answer that you were looking for and it has come to your great help.</span>
8 0
3 years ago
Jane has 15 coins in total of $2.18. She has 5 more quarters than nickels, has 3 pennies and dimes. How many quarters, nickels,
fredd [130]
She has 7 quarters two nickels and 3 dimes
8 0
3 years ago
Look at picture. Does anybody know the answer I’m lost?
masha68 [24]

Let x,y be the dimensions of the rectangle. We know the equations for both area and perimeter:

A=xy=36

P=2(x+y)=36 \iff x+y=18

So, we have  the following system:

\begin{cases}xy=36\\x+y=18\end{cases}

From the second equation, we can deduce

y=18-x

Plug this in the first equation to get

xy=x(18-x)=-x^2+18=36

Refactor as

x^2-18x+36=0

And solve with the usual quadratic formula to get

x=9\pm3\sqrt{5}

Both solutions are feasible, because they're both positive.

If we chose the positive solution, we have

x=9+3\sqrt{5} \implies y=18-x=18-9-3\sqrt{5}=9-3\sqrt{5}

If we choose the negative solution, we have

x=9-3\sqrt{5} \implies y=18-x=18-9+3\sqrt{5}=9+3\sqrt{5}

So, we're just swapping the role of x and y. The two dimensions of the rectangle are 9+3\sqrt{5} and 9-3\sqrt{5}

6 0
2 years ago
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