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3 years ago

Use the Perfect Square Trinomial and provide the first step to calculating 42^2 without a calculator.

Mathematics

2 answers:

r-ruslan [8.4K]3 years ago

7 0

Answer:

1764

Step-by-step explanation:

(40 + 2)²

40² + 2(40)(2) + 2²

1600 + 160 + 4

1764

(46 - 4)²

46² - 2(46)(4) + 4²

2116 - 368 + 16

1764

Evgen [1.6K]3 years ago

6 0

Answer: D) (40+2)2

I got it right on my test

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Find the x and y intercepts of this line: -5x+4y=-18

vaieri [72.5K]

Answer:

Step-by-step explanation:

x- intercepts: ( 18/5,0)

y- intercepts: ( 0,-9/2)

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3 years ago

Read 2 more answers

G(t)=(t−7)(t+6) What is the domain of gg?

Oxana [17]

Answer:

All Real Numbers

Step-by-step explanation:

g(t) = (t − 7)(t + 6)

= t^2 - t - 42

This is a parabola which opens upwards.

The domain is All Real Numbers

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3 years ago

Please help me asap I will give brainliest or whatever you want

dangina [55]

Answer/Step-by-step explanation:

Part A:

$Key:\left[1 Adult = 4 Student]$

$Formula: Divide$ $by$ $4$

12 Student = 3 Adult

24 Student = 6 Adult

40 Student = 10 Adult

Part B:

33 Student

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2 years ago

Please solve the equation by factorising

Kobotan [32]

Answer:

X= -2/3, 4

Step-by-step explanation:

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3 years ago

Solve 5x + 4 = 14 EXPLAIN your answer.

Crazy boy [7]

We know the value absolute of x is possible x if x positive or -x if x negative.
So we have two cases:
* 5x+4=14 or 5x=14-4, and 5x=10, x=10:5 and we obtain x=2
* 5x+4=-14 or 5x=-14-4, and 5x=-18, so we have x= -18:5
So we choose c, 2, -18/5

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4 years ago