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3 years ago

Find the value of |-4| - 5 · 2(-1 + 3).

Mathematics

2 answers:

vredina [299]3 years ago

6 0

Use PEMDAS

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

and |a| = a for a ≥ 0 or |a| = -a for a < 0.

|-4| - 5 · 2(-1 + 3) =-(-4) - 5 · 2(2) = 4 - 10(2) = 4 - 20 = -16

kirill [66]3 years ago

5 0

Answer:

sorry if im late but the answer is -16

Step-by-step explanation:

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lara [203]

Answer:

Step-by-step explanation:

1/3 of 60 is 20

40 would be left

1/4 of 40 is 10 so 30 would be left

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3 years ago

What am I supposed to do?

aleksley [76]

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3 years ago

URGENT!!! SOLVE BY TAKING THE SQUARE ROOTS. 50 POINTS

il63 [147K]

Answer:

Step-by-step explanation:

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3 0

2 years ago

How do u factor this

PilotLPTM [1.2K]

You can factor a parabola by finding its roots: if

$p(x)=x^2+bx+c$

has roots $x_1,\ x_2$ , then you have the following factorization:

$p(x) = (x-x_1)(x-x_2)$

In order to find the roots, you can use the usual formula

$x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

In the first example, this formula leads to

$x_{1,2} = \dfrac{-2\pm\sqrt{4+4}}{2} = \dfrac{-2\pm\sqrt{8}}{2} = \dfrac{-2\pm2\sqrt{2}}{2} = 1 \pm \sqrt{2}$

So, you can factor

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

The same goes for the second parabola.

As for the third exercise, simply plug the values asking

$f(1.5)=-5.25$

you get

$f(-1.5) = 1.5c-3 = -5.25$

Add 3 to both sides:

$1.5c = -2.25$

Divide both sides by 1.5:

$c = 1.5$

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3 years ago

Mr lim had 3kg of sugar . He divided the sugar into 5 equal amounts.what is the mass of eacy amount of sugar give your answer as

kicyunya [14]

Divide total # kg by the # of parts it is divided in to.

=3 kg ÷ 5 parts
=3/5 kg

Hope this helps! :)

6 0

3 years ago