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3 years ago

Evaluate A2 for A = -3.

Mathematics

2 answers:

4vir4ik [10]3 years ago

6 0

If you are solving A^2 then the answer is 9.
Or If you are solving A•2 then the answer is -6.

Marysya12 [62]3 years ago

6 0

Answer: The required value of A² is 9.

Step-by-step explanation: We are given the following value of a variable A :

$A=-3.$

We are to find the value of $A^2.$

To evaluate $A^2,$ we need to multiply A and A.

Therefore, the evaluation is as follows :

$A^2=A\times A=(-3)\times(-3)=9.$

Thus, the required value of A² is 9.

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10+2r=8 need the answer now

natulia [17]

Simplifying

10 = 2r + -8

Reorder the terms:

10 = -8 + 2r

Solving

10 = -8 + 2r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-2r' to each side of the equation.

10 + -2r = -8 + 2r + -2r

Combine like terms: 2r + -2r = 0

10 + -2r = -8 + 0

10 + -2r = -8

Add '-10' to each side of the equation.

10 + -10 + -2r = -8 + -10

Combine like terms: 10 + -10 = 0

0 + -2r = -8 + -10

-2r = -8 + -10

Combine like terms: -8 + -10 = -18

-2r = -18

Divide each side by '-2'.

r = 9

Simplifying

r = 9

3 0

3 years ago

Read 2 more answers

Solve the inequality. 4x+6<3x-5 A)x<1 B) x<11 C) x<-1 D)x<-11

klasskru [66]

4x + 6 < 3x - 5 is our given inequality

4x < 3x -11 by subtracting 6 on both sides of the inequality sign

x < -11 by subtracting 3x on both sides.

Thus, x < -11 -- choice D -- is the solution.

4 0

3 years ago

I don’t get it this ain’t make no sense

Arturiano [62]

Answer:

65 m

Step-by-step explanation:

u = 6 m/s

v = 20 m/s

t = 5 s

$s=\frac{1}{2} (6+20)5$

$s=\frac{1}{2} (26)5$

$s=(13)5$

$s=65$

7 0

3 years ago

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What is the answer to this math question?

oksano4ka [1.4K]

Answer:

The answer is option 3.

Step-by-step explanation:

First we have to find the area of both rectangle and triangle :

Rectangle,

$area = base \times height$

Let base = 9,

Let height = 3,

$area = 9 \times 3 \\ area = 27 \: {m}^{2}$

Triangle,

$area = \frac{1}{2} \times base \times height$

Let base = 3,

Let height = 3,

$area = \frac{1}{2} \times 3 \times 3 \\ area = \frac{1}{2} \times 9 \\ area = \frac{9}{2} \\ area = 4.5 \: {m}^{2}$

Lastly, in order to find the shaded region you have to substract the area of triangle from the area of rectangle :

$area = 27 - 4.5 \\ area = 22.5 \: {m}^{2}$

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3 years ago

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Someone please help I hate probability :(

nikdorinn [45]

I think starting from the top it would go as follows

9/36, 27/36, 32/36 , 4/36

b.) 9/36

c.) I really don't remember how to do the "order doesn't matter" thing anymore, so idk. my best idea is for you to look up the formulas for permutation and combinations. I know it has to do with that

7 0

3 years ago