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andrew11 [14]
3 years ago
10

What is the difference of –96.43 – (–98.67)?

Mathematics
2 answers:
Vikki [24]3 years ago
6 0

Answer:

2.24

Step-by-step explanation:

This problem can actually be changed from a subtraction problem to an addition problem. Two negative signs together make a positive.

So, the problem becomes:

-96.43

+ 98.67

Now, remember this phrase to help solve problems like this:

Same sides add and keep. Different signs subtract. Keep the sign of the higher number.

kvv77 [185]3 years ago
6 0
That equation would become -96.43 + 98.67 which would be 2.24
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Explain why the exponents cannot be added in the product 12 to the power of three times 11 to the power of 3
egoroff_w [7]
Normally, we could add exponents.
however, that only is possible when the bases are the same
recall what exponents mean

12³=12*12*12


so we cannot add exponents for 12³*11³ because that means 12*12*12*11*11*11
it would not equal 12⁶ or 11⁶



or you  could refer to the rule
(x^a)(x^b)=x^{a+b}
notice when x=x then we can add the bases


fun fact below
we can reverse a previous exponential rule like this
since (ab)^c=(a^c)(b^c) then (a^c)(b^c)=(ab)^c
therefor
12^3*11^3=(12*11)^3



we can't add the exponents because the bases are not the same
5 0
3 years ago
If the areas of the given pairs of shapes are equal, find the value of x.​
den301095 [7]

Answer:

x = 8cm

Step-by-step explanation:

we are given a square and rectangle.we want to figure out x which is the width of the rectangle. we are also given a condition i.e

  • the area of the square equal to the area of the rectangle

therefore,

\displaystyle \rm A _{square } = A _{rect}

recall the formula of the area of square and rectangle so,

\displaystyle  {s}^{2} = lw

now assign variables

  • s \implies16cm
  • l \implies32cm
  • w \implies x

thus substitute:

\displaystyle 32cmx =  {16cm}^{2}

simplify square:

\displaystyle 32cmx = 256cm^2

divide both sides by 32:

\displaystyle  \boxed{x = 8cm}

and we're done!

3 0
2 years ago
Read 2 more answers
What are the x intercept and y intercept of the graph of 5x+8y=20
Arada [10]

Answer:

x intercept: (4,0)

y intercept: (0,2 1/2)

Step-by-step explanation:

4 0
2 years ago
Prove that the sum of the squares of any two odd numbers is always even
ValentinkaMS [17]

Answer:

proof below

Step-by-step explanation:

Remember that a number is even if it is expressed so n = 2k. It is odd if it is in the form 2k + 1 (k is just an integer)

Let's say we have to odd numbers, 2a + 1, and 2b + 1. We are after the sum of their squares, so we have (2a + 1)^2 + (2b + 1)^2. Now let's expand this;

(2a + 1)^2 + (2b + 1)^2 = 4a^2 + 4a + 4b + 4b^2 + 4b + 2

= 2(2a^2 + 2a + 2b^2 + 2b + 1)

Now the sum in the parenthesis, 2a^2 + 2a + 2b^2 + 2b + 1, is just another integer, which we can pose as k. Remember that 2 times any random integer, either odd or even, is always even. Therefore the sum of the squares of any two odd numbers is always even.

6 0
3 years ago
The area of the shaded sector is shown. Find the radius of circle M. Round your answer to the nearest hundredth.
Vaselesa [24]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the sector, its area and the angle at the center are not given.

I will solve this using the following illusration

The area of a sector is:

Area= \frac{\theta}{360} * \pi r^2

Assume that:

\theta = 120

Area = 20

The equation becomes

20= \frac{120}{360} * \pi r^2

Simplify

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Take: \pi = 3.14

20= \frac{1}{3} *3.14* r^2

Cross Multiply

3.14 * r^2 = 20 * 3\\

Solve for r^2

r^2 = \frac{20 * 3}{3.14}

r^2 = 19.11

Take square roots

r = \sqrt{19.11

r = 4.4

3 0
2 years ago
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