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4 years ago

How many solutions are there to this equation?

Mathematics

2 answers:

Lelechka [254]4 years ago

6 0

There are 0 solutions

victus00 [196]4 years ago

6 0

Answer: the correct option is

(b) 0.

Step-by-step explanation: We are given to find the number of solutions for the following linear equation :

$9x-16=9x-23~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

To find the number of solutions of the given equation, we must try to solve the equation and find the value of x.

From equation (i), we have

$9x-16=9x-23\\\\\Rightarrow 9x-9x=-23+16\\\\\Rightarrow 0=-7,$

which can never be possible.

Thus, the given equation has NO solution.

Option (b) is CORRECT.

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olga nikolaevna [1]

Answer:

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3 years ago

Read 2 more answers

Mary buys a 10-meter spool of thread for sewing. She uses 210 centimeters. How much is left on the spool in centimeters?

Margaret [11]

100 cm = 1 meter

210 cm = 2.1 meters (multiply both sides by 2.1)

Mary uses 2.1 meters of thread so far, meaning she has 10-2.1 = 7.9 meters left

7.9 meters = (7.9 m)*(100 cm/1 m) = 790 cm

--------------------------------------

Alternate route:

10 meters = (10 m)*(100 cm/1 m) = 1000 cm

Mary uses 210 cm out of 1000 cm total, so she has 1000-210 = 790 cm left.

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<h3>Answer: 790 cm</h3>

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3 years ago

Verify the identity sin^2(x/2)=(1-cosx)/2

horsena [70]

Use the following identity:

cos(2x)=1-2sin^2(x)

5 0

4 years ago

Choose the explicit and recursive formulas for the geometric sequence 45, 135, 405, 1215, 3645, .... PLEASE HELP ASAP

sesenic [268]

Answer:

Option (B)

Step-by-step explanation:

Given sequence is 45, 135, 405, 1215, 3645..........

Since it's a geometric sequence,

Common ratio of each successive term to the previous term

r = $\frac{135}{45}=3$

First term of the sequence 'a' = 45

Explicit formula of a geometric sequence will be,

$a_n=a(r)^{n-1}$

$a_n=45(3)^{n-1}$

Recursive formula of this sequence will be,

$a_n=3(a_{n-1})$ , $a_1=45$

Therefore, Option (B) will be the answer.

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3 years ago

f a football player passes a football from 4 feet off the ground with an initial velocity of 36 feet per second, how long will i

saveliy_v [14]

When it hits the ground h = 0 so we have

-16t^2 + 36t + 4 = 0

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4 0

4 years ago