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3 years ago

11

Can anyone work me through this and explain how to do this? I'm kinda confused. Subject is: "simplify numerical radical expressi

ons involving square roots"
i don't just want the answers, I want help understanding how to do this.

1 answer:

murzikaleks [220]3 years ago

3 0

1: Its B
4: Its D

Sorry I don't know what how to explain it.

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Use the given information to find the value of x. Then, find the measure of angle ADC.

skad [1K]

Answer:

60degrees

Step-by-step explanation

To get the angle x, you must first know that the sum of angle at a point is 360degrees. Hence;

x + <ADB + <CDB = 360

x +150 + 150 = 360

x+ 300 = 360

x = 360 - 300

x = 60

Hence the value of x is 60degrees

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3 years ago

A 2-digit number with x units and 7 less units than tens.

Hatshy [7]

Each two digit number has two numbers (duh!). Let's allow the tens digit to be x and the units digit to be y. Tens digit is 3 less than the units digit: x = y-3 Original number is 6 more than 4 times the sum of the digits: 10x+y-6 = 4x + 4y This gives us simultaneous equations!First let's clear the mess: 1. x= y-32. 6x-3y=6 Substitute 1 into 2: 6(y-3) -3y =66y - 18 - 3y = 6
3y = 24y = 8 Our units digit is 8 Substitute y= 8 into 1. x = y - 3x = 5 Our tens digit is 5 Therefore, our number is 58

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2 years ago

If F(x)=4x-1 and g(x)=x^2+7, what is g(f(x))

VashaNatasha [74]

Answer

$g(f(x)) = = 16 {x}^{2} - 8x + 8$

step by step Explanation

The functions given are

$f (x)= 4x- 1$

$g(x)= {x}^{2} + 7$

We want to find:

$g(f (x))= g( 4x- 1)$

This implies that

$g(f (x))= ( (4x- 1)^{2} + 7)$

Let us now simplify

$( {a - b)}^{2} = {a}^{2} -2ab + {b}^{2}$

This implies that

$( (4x- 1)^{2} + 7) =( {(4x)}^{2} - 2(4x) \times 1 + 1$

Combine the terms to get,

$= 16 {x}^{2} - 8x + 1 + 7$

$= 16 {x}^{2} - 8x + 8$

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3 years ago

Read 2 more answers

Can anyone please help me with 1-18

ruslelena [56]

Answer:

a. 15 on top 8 on bottom

b. 2 on top -3 on bottom

c. 4 and 2

d. 4 on top 8.5 on bottom

e. -3 and -4

Step-by-step explanation:

multiply the two numbers on the sides to get the top answer and add them together to get the bottom answer.

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3 years ago

Write the inequality for the graph.

Slav-nsk [51]

9514 1404 393

Answer:

-1 < x < 2

Step-by-step explanation:

The graph indicates the variable may take on values between -1 and 2, not including those values. The compound inequality is written ...

-1 < x < 2

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3 years ago