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3 years ago

There are 5 smiles Linda mad one a fawn haw many smiles are there now

Mathematics

2 answers:

pychu [463]3 years ago

7 0

Answer:

Step-by-step explanation:

5 smiles - 1 = 4 smiles

katrin2010 [14]3 years ago

6 0

Answer:

I think there are still 5 smiles. I dont know

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Marcus is running a science experiment in which he measures the rate at which bacteria multiply. Every 15 seconds the bacteria d

lesantik [10]

Answer:

C. 20480

Step-by-step explanation:

so the equation is (60x3) divided by 15 because there are 3 minutes and 60 seconds in each minute and the bacteria doubles every 15 seconds so when you get your answer (12) that is how many times you will double 5.

6 0

3 years ago

Based on the graph what are the solutions to ax^2 + bx+c=0 Select all that apply

AlexFokin [52]

Answer:

x=-2 and x = 5

Step-by-step explanation:

The solutions to the equation are where the graph crosses the x axis

We can see that the graph crosses at x=-2 and x = 5

8 0

3 years ago

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How many minutes are there in a day?

RoseWind [281]

1440

because yea

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3 years ago

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What is the value of the product (3 – 2i)(3 + 2i)?

eimsori [14]

Answer:

Step-by-step explanation:

(3 - 2i)(3 + 2i)

Expand

(9 + 6i - 6i - 4i^2)

Add

(9 - 4i^2)

Convert i^2

i^2 = ( $\sqrt{-1}$ )^2 = -1

(9 - 4(-1))

Add

(9 + 4)

= 13

6 0

3 years ago

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Solve the equation using the quadratic formula. Enter each solution in simplest form.

sergeinik [125]

For this case we have the following quadratic equation:

$x ^ 2-4x + 23 = 0$

The solutions will be given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Where:

$a = 1\\b = -4\\c = 23$

Substituting the values we have:

$x = \frac {- (- 4) \pm \sqrt {(- 4) ^ 2-4 (1) (23)}} {2 (1)}\\x = \frac {4 \pm \sqrt {16-92}} {2}\\x = \frac {4 \pm \sqrt {-76}} {2}\\x = \frac {4 \pm \sqrt {76i ^ 2}} {2}\\x = \frac {4 \pmi \sqrt {76}} {2}\\x = \frac {4 \pmi \sqrt {2 ^ 2 * 19}} {2}\\x = \frac {4 \pm2i \sqrt {19}} {2}\\x = 2 \pm i\sqrt {19}$

We have two roots:

$x_ {1} = 2-i \sqrt {19}\\x_ {2} = 2 + i \sqrt {19}$

ANswer:

$x_ {1} = 2-i\sqrt {19}\\x_ {2} = 2 + i\sqrt {19}$

6 0

3 years ago