3 years ago

The new pencil is 19 centimeters long how many millimeters long with a pencil

Mathematics

1 answer:

juin [17]3 years ago

6 0

The pencil will be 190 millimeters

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Solve 2x^2 - 7x - 15 = 0. <br> a, (3/2,-5)<br> b (-3/2,5)<br> c ()

Brut [27]

For this case we must solve the following quadratic equation:

$2x ^ 2 -7x -15 = 0$

We must apply the following formula:

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

We have to:

$a = 2\\b = -7\\c = -15$

Substituting we have:

$x = \frac {- (- 7) \pm \sqrt {(- 7) ^ 2-4 (2) (- 15)}} {2 (2)}\\x = \frac {7 \pm \sqrt {49 + 120}} {4}\\x = \frac {7 \pm \sqrt {169}} {4}\\x = \frac {7 \pm13} {4}$

Thus, the solutions are:

$x_ {1} = \frac {7 + 13} {4} = \frac {20} {4} = 5\\x_ {2} = \frac {7-13} {4} = \frac {-6} {4} = - \frac {3} {2}$

ANswer:

$x_ {1} = 5\\x_ {2} = - \frac {3} {2}$

4 0

3 years ago

isabella and aiden get a reward of $119 in the ratio of 4 3, what fraction of the total reward does isabella get

Zina [86]

Using proportions, considering the given ratio, Isabella gets $\frac{4}{7}$ of the total reward.

<h3 /><h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

The ratio of Isabella and Aiden is 4:3, which means that out of 4 + 3 = 7 items, Isabella gets 4 and Aiden gets 3, hence the fraction is given by:

$\frac{4}{7}$ .

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

7 0

2 years ago

is it possible to draw a quadrilateral that is not a rectangle that is not a rectangle but has at least one right angle? explain

andrezito [222]

Yes, a quadrilateral can be a square, which has a right angle also.

5 0

4 years ago

Will give Brainly! Need help!

densk [106]

Answer:

(-3,5)

Step-by-step explanation:

Please brainleist me

3 0

3 years ago

7 1/2 times 3 1/4<br><br> Help me

Gre4nikov [31]

= 15/2 ( 13/4

= 195/8

= 24.3

I hope that's help !

8 0

3 years ago

Read 2 more answers