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Katen [24]
2 years ago
13

PLEASE HELP ME

Mathematics
1 answer:
makvit [3.9K]2 years ago
4 0

Answer:

i think its x

Step-by-step explanation:

it looks simple yet intimidating

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Problem IDPRAQT48 At the beginning of a trip, a car's gasoline tank contained 14 1/5 gallons of gas. At the end of the trip, it
Kryger [21]

Answer:

5 8/15 Gallons

Step-by-step explanation:

Step 1: Change mixed numbers into improper fractions.

14 1/5 = 71/5

8 2/3 = 26/3

Step 2: Change the improper fractions to have the same denominator.

71/5 = 213/15

26/3 = 130/15

Step 3: Subtract

213/15 - 130/15 = 83/15

Step 4: Simplify

83/15 = 5 8/15

Hope this helps! :D

8 0
3 years ago
Picture attached pls help (will give brainliest)
motikmotik

Answer:

\boxed{ \tt{b.}}

Step-by-step explanation:

{2x}^{4}  +  {2x}^{3}  -  {x}^{2}  - x \\ x({2x}^{3}  + {2x}^{2}  - x - 1) \\ x({2x}^{2}  (x + 1) - 1(x + 1)) \\ {2x}^{3} (x + 1) - x(x + 1) \\ ({2x}^{3}  - x)(x + 1)\\ x({2x}^{2} - 1)(x + 1)

8 0
3 years ago
Write the equation of a line that is perpendicular to y =3x-2 and that passes through the point(-9,5)
Oduvanchick [21]

Answer:

y = -1/3x + 8

Step-by-step explanation:

If two lines are perpendicular, the signs of the slope must be opposite and the slopes are reciprocals.

(basically if one is say -2/3, the other is 3/2. just flip it upside down)

So this slope is 3, so the new slope should be -1/3

The equation is now y = -1/3x + b

To find b, substitute (-9,5) in the equation

y = -1/3x + b

5 = -1/3(9) + b

5 = -3 + b

8 = b

So the equation is y = -1/3x + b

7 0
4 years ago
Read 2 more answers
What is 3/4 +3/5 as a mixed number
Dmitry_Shevchenko [17]

Answer:

27 /20 =1 and 7 over 20= 1.35

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Why can you use cross products to solve the proportion StartFraction 18 over 5 EndFraction = StartFraction x over 100 EndFractio
gtnhenbr [62]

9514 1404 393

Answer:

  it is application of the multiplication property of equality

Step-by-step explanation:

You can use "cross products" to solve any proportion. What looks like a "cross product" is just application of the multiplication property of equality. That property says the variable value is unchanged if both sides of the equation are multiplied by the same value.

For your fraction, the "cross product" is what you get when you multiply both sides of the equation by 500.

  \dfrac{18}{5}=\dfrac{x}{100}\qquad\text{given}\\\\\dfrac{18\cdot5\cdot100}{5}=\dfrac{x\cdot5\cdot100}{100}\qquad\text{multiply by $5\cdot100$}\\\\18\cdot100=5\cdot x\qquad\text{cancel common factors; looks like cross product}

__

Note that the next step here is to divide by the x-coefficient, the 5 that was in the left-side denominator.

  \dfrac{18\cdot100}{5}=x\qquad\text{divide by 5}

Please also note that this is exactly the same result you would get by multiplying the original equation by the original denominator of x.

8 0
3 years ago
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