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tia_tia [17]
2 years ago
9

17/20

Mathematics
1 answer:
Lena [83]2 years ago
6 0

Answer:

2.39 cm

Step-by-step explanation:

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1 question pleasee i need this asap!! thank you :D
nydimaria [60]
The correct answer is:  [A]:  " x = 6 " or  " x = - 9 " .
________________________________________________________
Explanation:
________________________________________________________
Given the following equation:
________________________________________________________
   
   " x² + 3x – 54 = 0 " ;  Solve for "x" ; 
_____________________________________________________
Check if the part of the equation on the "left-hand side" can be "factored":

   " x² + 3x – 54 " ; 

→  We see the " + 3x " and the " – 54 "

Factors of " -54 " that add up to " +3" ;

Let us try:  " -9, 6" ;   →  " -9 + 6 = -3 " ;  →  " -3 ≠ +3 ;

Let us try:  " 9, -6" ;   →  " 9 + (-6) = 9 – 6 = 3 " ;   YES!
       →   {that is:  " +9 , -6 "} ; 


So, we can rewrite the entire equation:

→  " (x + 9)(x – 6) = 0 " ;

→  " x = -9 " ;  or,  " x = 6 " ; which is:  

→  Answer choice:  [A]:  " x = 6 "  or  " x = - 9 " .
______________________________________________________
6 0
3 years ago
Find the volume and show work to be brainliest
stiks02 [169]

Answer:

(7) 1482 in³

(8) 216 yd³

Step-by-step explanation:

Formulas

<u>Volume</u><u> </u><u>of</u><u> </u><u>prism</u>

= base × height/length

<u>Area of parallelogram</u>

= base × height

<u>Area of trapezium</u>

= (upper base + lower base) × height ÷ 2

(7)

Area of the base = 19×6

= 114 in²

Length = 13 in

Volume = 144×13

= <u>1482 </u><u>in</u><u>³</u>

(8)

Area of the base = (11+7)×12÷2

= 108 yd²

Length = 2 yd

Volume = 108×2

= <u>216 yd³</u>

6 0
3 years ago
Read 2 more answers
Consider a 7-year bond with a 9% coupon and a yield to maturity of 12%. If interest rates remain constant, 1 year from now the p
mr_godi [17]
After a year from now the price of the bond will be
C. higher
8 0
3 years ago
Find the percent of increase from 40 gallons to 89 gallons. Round to the nearest tenth of a percent if necessary.
tiny-mole [99]

Answer:

50

Step-by-step explanation:

because 89-49=49 49 rouded to the nearest ten is 50

3 0
2 years ago
Express in logarithmic form for the base. x y = P
denis-greek [22]
So

x^y=P

remember
a^b=c translates to log_a(c)=b
basically, the power that a must be raised to to obtain c is b

so
x^y=P translates to log_x(P)=y
8 0
3 years ago
Read 2 more answers
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