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3 years ago

Is 0.9 greater than 0.81?

Mathematics

2 answers:

otez555 [7]3 years ago

7 0

Yes 0.9 it greater then 0.81 because 0.9 it equal to 0.90 which it greater then 0.81.

Sliva [168]3 years ago

3 0

0.9 is greater than 0.81 because 0.9 is equal to 0.90, and 0.90 is greater than 0.81 by .09

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Area of a 158 degree sector

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3 years ago

Identify the slope from the points (1,-3) and (4,2) identify the slope for each graph

Aliun [14]

Answer:

First: 1/4

Second: 3/5

Step-by-step explanation:

FIRST:

You can easily solve this problem by creating a slope triangle between the points given.

1 up

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SECOND:

To solve for slope with two points, you do y1-y2/x1-x2.

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3 years ago

Is my answer correct ??

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the solution set of this inequality. select the correct graph. |-4x+14|>6

lions [1.4K]

Split the inequality into two:
(-4x+14)>6 & -(-4x+14)>6

solve:
(-4x+14)>6
-4x>-8
x<2
(symbol changes when ÷/× by negative for inequalities.)

-(-4x+14)>6
-4x+14<-6
-4x<-20
x>5

the answers are x<2 and x>5, so you would write your answer like this: (-∞,2) ∪ (5,∞)

5 0

3 years ago

Write down the quadratic equation whose roots are $x = -7$ and $x = 1,$ and the coefficient of $x^2$ is 1. Enter your answer in

pav-90 [236]

<h2>Steps:</h2>

So firstly, since we know that the coefficient of x² is 1, this means that this is our base equation:

y = x² + bx + c

Now, since we know that the roots are -7 and 1, set y = 0 and set x = -7 and 1 and simplify:

$0=(-7)^2+b(-7)+c\\0=49-7b+c\\-49=-7b+c\\\\0=1^2+b(1)+c\\0=1+b+c\\-1=b+c\\\\-49=-7b+c\\-1=b+c$

Now with this, we can set up a system of equations to solve for b and c. For this, I will be using the elimination method. For this, subtract the 2 equations:

$\begin{alignedat}{2}-49&=-7b+c\\-(-1&=b+c)\\-48&=-8b\end{alignedat}$

Now that the c variable has been eliminated we can solve for b. For this, divide both sides by -8 and your first part of your answer is b = 6.

Now that we know the value of b, plug it into either equation to solve for c:

$-49=-7(6)+c\\-49=-42+c\\-7=c\\\\-1=6+c\\-7=c$

<h2>Answer:</h2>

<u>Putting it together, your final answer is x² + 6x - 7 = 0.</u>

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3 years ago