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Anon25 [30]
3 years ago
11

Two less than seven times a number cbtw this is write the phrase as an algebraic expression​

Mathematics
1 answer:
velikii [3]3 years ago
8 0

Answer:

3c-2

Step-by-step explanation:

Hope it helps!!!!!!!

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Derive the equation of the parabola with a focus at (-5,5) and a directix of y = -1
Paladinen [302]

Answer:

D

Step-by-step explanation:

From any point (x, y) on the parabola the focus and directrix are equidistant

Using the distance formula

\sqrt{(x+5)^2+(y-5)^2} = | y + 1 |

Squaring both sides

(x + 5)² + (y - 5)² = (y + 1)^2 , that is

(y + 1)² = (x + 5)² + (y - 5)² ← subtract (y - 5)² from both sides

(y + 1)² - (y - 5)² = (x + 5)² ← expand left side and simplify

y² + 2y + 1 - y² + 10y - 25 = (x + 5)²

12y - 24 = (x + 5)² ← factor left side

12(y - 2) = (x + 5)² ← divide both sides by 12

y - 2 = \frac{1}{12} (x + 5)² ← add 2 to both sides

y = \frac{1}{12} (x + 5)² + 2

or

f(x) = \frac{1}{12} (x + 5)² + 2 → D

7 0
3 years ago
Pie stands for 3.14 but need to know the answer
Kaylis [27]

the formula for this questions would be pie multiplyed by d

so to solve this problem you would 3.14* 120 which equals 376.8

what you need to do to find six laps is multiply 376.8 with 6

which gives you 2260.8

answer- 2260.8

7 0
3 years ago
The perimeter of the original rectangle on the left is 30 meters. The perimeter of the reduced rectangle on the right is 24 mete
LenaWriter [7]

Answer:

8 meters

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Plz help me asap worth 20 points
Ainat [17]

Answer:

OK so the equation has a exponent so if there is a exponent then you need to multiply. since 227 is the Area and the exponent is 2.

Step-by-step explanation:

3 0
3 years ago
The value of the exponent in (22)−5<br><br>is​
lyudmila [28]

Answer:

Let's calculate:

22-5

• Remove minus in the exponent and invert the base:

= (1/22)5

• Expand the multiplication:

= (1/22) * (1/22) * (1/22) * (1/22) * (1/22)

• Find your result:

= 1/5153632 ≈ 0.000000194038

3 0
3 years ago
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