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aleksandrvk [35]
3 years ago
13

Solve for n. Show your work.

Mathematics
1 answer:
VladimirAG [237]3 years ago
3 0

Answer:

n = -3

Step-by-step explanation:

2n-8 = 5n   Times both of the sides by 2

-9 = 3n       subtract 2n from both sides

-3 = n       Divide 3 from both sides.

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the student council set a goal of raising at least $500 in flower sales. so far it has raised $415 .write an inequality to show
Nat2105 [25]
415 + d ≥ 500

I believe that's the inequality since they want to raise a minimum of $500 so that means it can be more than $500. Hope I helped.
4 0
3 years ago
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Three hundred thousand five thousand sixty three in standard form
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305,063 is
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one tamk of gasoline has an octane rating of 140 and another tank of gasoline has an octane rating of 80. To obtain a mixture of
Zarrin [17]

Answer:

20 gallons were used from the tank with the octane rating of 80.

Step-by-step explanation:

Given : One tank of gasoline has an octane rating of 140 and another tank of gasoline has an octane rating of 80. To obtain a mixture of 60 gallons with an octane rating of 120.

To find : How many gallons should be used from the tank with the octane rating of 80?

Solution : Let x be the volume of gas whose octane rating is 140 and

y be the volume of gas whose octane rating is 80.

Then, we form the equation as:

(1) x\times140 + y\times80 = 60\times120

140x+80y = 7200

or  7x+4y = 360 .........[3]

(2) x + y = 60

Now multiply equation (2) by 4  

4x + 4y = 240 ...........[4]

Subtract (4) from (3)  

7x+4y-4x-4y=360-240

3x=120

x=\frac{120}{3}

x=40

Put x in equation [4] we get,

4(40) + 4y = 240

160 + 4y = 240

4y = 80

y=\frac{80}{4}

y=20

Therefore, x=40 and y=20

So, 20 gallons were used from the tank with the octane rating of 80.






7 0
3 years ago
If I paid $9.00 for 4 lb of candies, how much candies can I buy for $12.00?
Lina20 [59]

Answer:

We are given that 4 lb of candies are bought for $9.00

Therefore, the price of 1 lb of candies is:

\frac{9}{4}=2.25

Now the amount of candies that can bought for $12.00 is:

\frac{12}{2.25} =5.3333 lb

Therefore, 5.3333 lb of candies can be bought for $12.00


3 0
3 years ago
What is the factorization???
Sav [38]

we can see that

the above curve is parabola

so, firstly , we can find vertex

vertex is (4,0)

(h,k)=(4,0)

now, we can use vertex formula of parabola

y=(x-h)^2+k

we can plug h and k

and we get

y=(x-4)^2+0

so, we can factor it as

y=(x-4)(x-4)............Answer

6 0
3 years ago
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