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3 years ago

HELP PLEASE! What is the value of x? 4 42√ 8 82√

Mathematics

2 answers:

kondaur [170]3 years ago

5 0

See picture for answer.

Mariana [72]3 years ago

5 0

It's a 45 degree angle, so both of the small sides are 4✓2

x=✓([4✓2]^2+[4✓2]^2)

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Unit Rates a

harina [27]

Answer:

12 pages per minute

Step-by-step explanation:

60 pages are being printed in 5 minutes.

60 pages/5 minutes = 12 pages/minute

4 0

3 years ago

Read 2 more answers

What is the value of the dicsriminant of x^2-7x+4?

Aleks [24]

Answer:

33.

Step-by-step explanation:

x^2 - 7x + 4.

The discriminant of the above

= b^2 - 4ac

= (-7)^2 - 4*1*4

= 49 - 16

= 33.

8 0

3 years ago

hi, i dont undertand number 20 because i was absent in class today and i rerally need help, i will appraciate with the help, and

Mariulka [41]

Given:

The equation is,

$2\log _3x-\log _3(x-2)=2$

Explanation:

Simplify the equation by using logarthimic property.

$\begin{gathered} 2\log _3x-\log _3(x-2)=2 \\ \log _3x^2-\log _3(x-2)=2_{}\text{ \lbrack{}log(a)-log(b) = log(a/b)\rbrack} \\ \log _3\lbrack\frac{x^2}{x-2}\rbrack=2 \end{gathered}$

Simplify further.

$\begin{gathered} \log _3\lbrack\frac{x^2}{x-2}\rbrack=2 \\ \frac{x^2}{x-2}=3^2 \\ x^2=9(x-2) \\ x^2-9x+18=0 \end{gathered}$

Solve the quadratic equation for x.

$\begin{gathered} x^2-6x-3x+18=0 \\ x(x-6)-3(x-6)=0 \\ (x-6)(x-3)=0 \end{gathered}$

From the above equation (x - 6) = 0 or (x - 3) = 0.

For (x - 6) = 0,

$\begin{gathered} x-6=0 \\ x=6 \end{gathered}$

For (x - 3) = 0,

$\begin{gathered} x-3=0 \\ x=3 \end{gathered}$

The values of x from solving the equations are x = 3 and x = 6.

Substitute the values of x in the equation to check answers are valid or not.

For x = 3,

$\begin{gathered} 2\log _3(3^{})-\log _3(3-2)=2 \\ 2\log _33-\log _31=2 \\ 2\cdot1-0=2 \\ 2=2 \end{gathered}$

Equation satisfy for x = 3. So x = 3 is valid value of x.

For x = 6,

$\begin{gathered} 2\log _36-\log _3(6-2)=2 \\ 2\log _36-\log _34=2 \\ \log _3(6^2)-\log _34=2 \\ \log _3(\frac{36}{4})=2 \\ \log _39=2 \\ \log _3(3^2)=2 \\ 2\log _33=2 \\ 2=2 \end{gathered}$

Equation satifies for x = 6.

Thus values of x for equation are x = 3 and x = 6.

6 0

1 year ago

Will mark brainlest Thanks

klasskru [66]

Answer:

the answer is d

Step-by-step explanation:

5 0

3 years ago

What is the gcf for 45 51 and 63

Marina86 [1]

$Greatest\ common\ factor\ is\ the\ highest\ number\ by\ witch\ 45, \ 51\ and\\ 63\ can\ be\ divided\\\\
45:3\\
15:3\\
5:5\\\\
51:3\\
17:17\\\\63:3\\21:3\\7:7\\\\GCF=3\\\\Greatest\ common\ factor\ of\ 45,\ 63\ and\ 51\ is\ equal\ to\ 3.
$

7 0

3 years ago