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3 years ago

PLEASEEE HELP FAST

Mathematics

1 answer:

Viktor [21]3 years ago

4 0

Answer:

1. 4 as that is when he is closest.

2. 3 is when he is waiting as the graph is horizontal showing no movement

3. 4 would change as that is showing his pace walking home if it increased the slope would become steep but if it decreased it would level out more.

Step-by-step explanation:

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Problem

anyanavicka [17]

a. $x^4 + 4x^2 + 4$

b. x = ∛-1 and -3

<h3>How to expand the expression</h3>

a. Given

(x² + 2)²

First, we open up the bracket

$(x^2 + 2) (x^2 + 2)$

Multiply through

$x^4 + 2x^2 + 2x^2 + 4$

Collect like terms

$x^4 + 4x^2 + 4$

b. Let's factorize

$x^4 + 4x + 3$

Find the factors of 3 that are products of 4, they are 3 and 1

Use it to replace 4x as 3x and x

$x^4 + 3x + x + 3$

Let's make the expression two

$(x^4 + 3x) (x+ 3)$

Find the common factor

$x^3(x + 3)+ 1(x+ 3)$

So,

$x^3 + 1 = 0$ and $x + 3 = 0$

$x = 3\sqrt{-1}$ and x = -3

Thus, x = ∛-1 and -3

Learn more about factorization here:

brainly.com/question/25829061

#SPJ1

4 0

2 years ago

The sum of the measures of the angles in a triangle is 1800. If two of the angles are 72 and 76 degrees, what is the missing ang

ehidna [41]

Answer:

Step-by-step explanation:

72 + 76 = 148

180 - 148 = 32

I hope this helps!!

4 0

2 years ago

1/6÷6÷6= please help me with this :D

slava [35]

Answer:

1 / 216

Step-by-step explanation:

Remember, when you divide fractions you have to multiply by the reciprocal

1/6 ÷ 6/1 ÷ 6/1

1st step: 1/6 ÷ 6/1 = 1/6 · 1/6 = 1/36

2nd step: 1/36 ÷ 6/1 = 1/36 · 1/6 = 1 /216

6 0

3 years ago

Use the base ten system and mental math to find the products. of 40x50=

Fantom [35]

Answer:

2000

Step-by-step explanation:

(4x5) x 100

4 0

3 years ago

Read 2 more answers

Twice the sum of a certain number and 26 is 72

katen-ka-za [31]

Answer:

The unknown number is 12

Step-by-step explanation:

2(x+26)=76

or,x+26=76÷2

or,x=38-26

Therefore,x=12.

3 0

3 years ago