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3 years ago

Which is the better buy? Show your work and explain your reasoning.

Mathematics

1 answer:

Vinvika [58]3 years ago

6 0

Answer:

5.03

Step-by-step explanation:

Because

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How do you solve 7x-2=x²-10? Can you show the steps please :)

nekit [7.7K]

Answer: x=−1 or x=8

Step-by-step explanation: 7x−2=x2−10

Learn how to solve quadratic equations

Khan Academy Video: Solving a quadratic by factoring

Khan Academy Video: Quadratic Formula 1

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3 years ago

8 decreased by the difference of t and 4

Zina [86]

Answer:

See below.

Step-by-step explanation:

(t-4)-8

Remove parenthesis.

t-4-8

Combine like terms.

t-12

-hope it helps

8 0

2 years ago

Can someone please help me with this question 23 over 12 =

SSSSS [86.1K]

23/12 = 1 and 11/12

Hope this helps!

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3 years ago

Read 2 more answers

The 3rd term of a geometric sequence is -1/3 and the 8th term is 81. what is the 11th term?

shepuryov [24]

Answer: $t_{11}=-2187$

Step-by-step explanation:

$t_{3}=-1/3$

That is :

$ar^{2} = -1/3$ ................. equation 1

Also

$t_{8}=81$

that is

$ar^{7}=81$ ................. equation 2

divide equation 2 by equation 1 , that is

$\frac{ar^{7}}{ar^{2}} = 81 / -1/3$

$r^{5}=$ $81$ x $-3/1$

$r^{5}= -243$

find the fifth root of both sides

$r = -3$

substitute $r = -3$ , into equation 1 to find a , that is

$a(-3^{2})= -1/3$

$9a = -1/3$

multiply through by 3

$27a = -1$

$a =- 1/27$

To find the 11th term , the formula for the 11th term is given as :

$t_{11}=ar^{10}$

$t_{11}= -1/27(-3^{10})$

$t_{11}=-2187$

6 0

4 years ago

How do you discribe any opposite in a parallelogram?

Mademuasel [1]

Answer:

Opposite sides of a parallelogram are parallel (by definition) and so will never intersect. The area of a parallelogram is twice the area of a triangle created by one of its diagonals. The area of a parallelogram is also equal to the magnitude of the vector cross product of two adjacent sides.

Step-by-step explanation:

4 0

3 years ago