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ValentinkaMS [17]
2 years ago
13

Maggie says that if the expression was 12÷3to the second power, you would divide before simplifying 3 to the second power. Is sh

e right? Explain
Mathematics
1 answer:
mezya [45]2 years ago
4 0

Answer:

Maggie is incorrect.

Step-by-step explanation:

PEMDAS tells us the order of operations and the steps of solving a mathematical statement. It states that exponents must be performed before multiplication or division.

P - Parentheses

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

Therefore, to solve 12÷3² correctly, 3² needs to be simplified to 9 <em>before</em> dividing.

I hope this helps!

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Will 5x-3y&gt;15 have a solid line
marysya [2.9K]

Answer:

The inequality 5x-3y >15 have a dashed line

Step-by-step explanation:

we have

5x-3y >15

The solution of this inequality is the shaded area below the dashed line

The equation of the dashed line is 5x-3y=15

The slope of the dashed line is positive

The y-intercept of the dashed line is -5 ---> point (0,-5)

The x-intercept of the dashed line is x=3 ----> point (3,0)

Graph the solution

see the attached figure

6 0
3 years ago
Hector found twice as many seashells as
MissTica
Hector = 2s or h/2
Sister = s


Equation: h/2 = s

Substitution: (20)/2 = s

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4 0
3 years ago
The sum of two numbers is 80 . The ratio of those two numbers is 3:5 find the larger Number
Oksana_A [137]

Answer:

the larger number is 50

Step-by-step explanation:

Notice there are two unknown numbers. Let's address the smaller one as x and the larger one as y. now we can write two equations from translating the phrases given into algebraic expressions:

"the sum of two numbers is 80" can be written as:

x+y=80

Now the second phrase:

"The ratio of those two numbers is 3/5"

Notice here that in our ratio we need to use our small number (x) in the numerator of the quotient, and the larger number (y) in the denominator to make it in agreement with the small and larger numbers of the ratio \frac{3}{5}, and solve for x:

\frac{x}{y} = \frac{3}{5} \\x= \frac{3}{5}y

Replace the value of x we just obtained in the first equation we wrote, so we obtain one equation with only one unknown hat we should be able to solve:

x+y=80\\\frac{3}{5} y+y=80\\\frac{3}{5} y+\frac{5}{5} y=80\\\frac{8}{5}y=80 \\8y=80*5\\8y=400\\y=\frac{400}{8} \\y=50

Therefore the larger number (y) equals 50.

7 0
3 years ago
Angle A and Angle B are supplementary angles. If angles A = 65, find the m Angle B.
WARRIOR [948]

Answer:

B = 115

Step-by-step explanation:

Since A and B are supplementary, they add up to 180 degrees.

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8 0
3 years ago
4. Solve the equation, please type your steps and your work:<br> 3x – 5 = -3
Evgesh-ka [11]

Answer:

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3 0
2 years ago
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