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dedylja [7]
3 years ago
6

SOMEONE HELP I AM CONFUSED!

Mathematics
1 answer:
jarptica [38.1K]3 years ago
4 0
The third one if you try and solve that on a graph it will be harder. 
5x-1 = 4x-8
-4x=    -4x
x-1=-8
  +1 = +1 
X=-7
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Janet has three times as many dimes as nickels and twice as many quarters as nickels. If she has $3.40 in all, how many nickels,
lord [1]
Let N be no. of nickles. Then N($.05)+3N($.10)+2N($.25)=$3.40.

Or

4 nickels = $0.20
12 dimes = $1.20
8 Quarters = $2.00

Total = $3.40

6 0
3 years ago
How long would it take me to earn$139.50 of interest at a 6% interest rate if I started with$930.00
Triss [41]
6% of 930 is 55.8

139.50 / 55.8 = 2.5

I will take two and a half years
8 0
3 years ago
(4,2);slope=3<br><br>help me out
ivolga24 [154]
We have a point and a slope, so let's use the point slope formula!

(y - y1) = m(x - x1)
where
x1=4
y1=2
and m=3

(y - 2) = 3(x - 4) \\ y - 2 = 3x - 12 \\ y = 3x - 10
8 0
4 years ago
A new car depreciates as soon as you drive it out of the parking lot. A certain car depreciates to half its original value in 4
Alexandra [31]

Answer:

Original price of car = $20,000

Step-by-step explanation:

Let the original price of the car be 'x' dollars.

Given:

Here, the depreciation of the car is occuring exponentially as the value depreciates to half in every four years.

Worth of car after 8 years = $5000

Value after depreciation in 4 years = Half of original value = \frac{x}{2}

So, value of car after depreciation in another 4 years = Half of the value after 4 years = \frac{1}{2}(\frac{x}{2})=\frac{x}{4}

Therefore, final depreciated value after 8 years is \frac{x}{4}.

But, as per question, final depreciated value is $5000. Thus,

\frac{x}{4}=5000\\x=5000\times 4\\x=20000

Therefore, the original price of the car was $20,000.

3 0
3 years ago
How much cakes can you bake if 1,12 of teaspoon of vanilla and she has 9/12 of teaspoon?
prohojiy [21]
If 9/12 is how much it takes to bake a cake you would need 9 of 1 and1/2
7 0
3 years ago
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