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Lilit [14]
3 years ago
13

Which operation should you perform first in the expression 12 x 4^2

Mathematics
1 answer:
Degger [83]3 years ago
7 0

Answer:

4^2

Step-by-step explanation:

Order of operations:

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

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4x^2+2xy-10y^2+9=0 what is the value of a,b,c and the discriminant?
zavuch27 [327]

basically you treat y like a number and not a variable

Answer:

a is 4

b is 2y

c is -10y²+9

discriminant is 4(41y²-36)

Step-by-step explanation:

4x²+2xy-10y²+9=0

rewrite in standard form of a quadratic equation like ax² + bx + c = 0

4x²+2yx-10y²+9=0

basically you treat y like a number and not a variable

a is the number with the x²

right away we know a is 4 because of 4x²

b is the one with x so in this formula b is 2y

c is the number without the x which in this case is -10y²+9

discriminant is

b² - 4ac

(2y)²- (4)(4)(-10y²+9)

4y²-(16)(-10y²+9)

4y²-(16)(-10y²+9)

4y²+160y²-144

164y²-144 =

4(41y²-36)

6 0
2 years ago
LenaIs is converting 2/25 to a percent what should she multiply the numerator and the denominator of the fraction why to find th
Contact [7]

Answer:

Multiply 2/25 by 4 to get 8/100 which can be turned into 8%

Step-by-step explanation:

6 0
2 years ago
P/-8 + 9 &gt; 13 <br> pls explain i don't get it
KonstantinChe [14]

Answer:

p < -32

Step-by-step explanation:

<em>Given:</em> p/-8 + 9 > 13

<em>Rewrite:</em> \frac{p}{-8} + 9 > 13

<em>Subtract 9 from both sides:</em> \frac{p}{-8}  > 4

<em>Move the negative (it is a fraction): </em>\frac{-p}{8} > 4

<em>Multiply both sides by 8:</em> -p > 32

<em>Times by -1 (-p -> -1p): </em>p > -32

<em>Flip the sign (multiplied by a negative): </em>p < -32

Hope this helps, have a nice day :D

3 0
2 years ago
Read 2 more answers
What are the x- and y- intercepts of -x + 4y = 8?
Oksana_A [137]

Answer:

X intercept: -8

Y intercept: 2

Step-by-step explanation:

Simplify the equation, and then solve like a normal two-step equation. (I'm sorry that it wasn't a great explanation. If you want a better one just send me an email in the inbox and I can give you a better explanation.)

8 0
3 years ago
Read 2 more answers
What I another way to write 42+63?
otez555 [7]
73+42 is correct because it’s addition
8 0
3 years ago
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