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3 years ago

Explain how comparing 645 and 738 is different from 645 and649

Mathematics

1 answer:

Schach [20]3 years ago

8 0

let me tell u I don't know so give me an complete thuought

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What does "d2" mean in trigonometry?

Lisa [10]

D is a notation for differential. There is a d2 in your formula because in the numerator there are two differentials. The formula is thus the second derivative of a function with respect to two variables.

7 0

3 years ago

Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.

barxatty [35]

Answer:

x=9,-1 and $x^2+(-8)x=9$

Explanation:

we have been given with the quadratic equation $x^2-8x-9$

we compare the given quadratic equation with general quadratic equation

general quadratic is $ax^2+bx+c=0$

from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant $D=b^{2}-4ac$

$D=(-8)^2-4(1)(-9)=100$

Now, to find the value of x

Formula is $x=\frac{-b\pm\sqrt{D}}{2a}$

Now, substituting the values we will get

$x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1$

And rewritting the given equation by shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of

$x^2+bx=c$

4 0

3 years ago

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Please help me im stuck on this question

STALIN [3.7K]

Answer:

78.0 kilo

Step-by-step explanation:

85.8- 93.6= 7.8

101.4-93.6= 7.8

85.8-7.8 = 78.0 kilo

6 0

2 years ago

Simplify(-4.5(-6(5.4

kherson [118]

If this is all multiplication
145.8

8 0

2 years ago

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Which one of the following would be a good tool to represent data in terms of percentage of a whole?

NemiM [27]

I think the correct answer from the choices listed above is the first option. It is a pie chart that would be <span>a good tool to represent data in terms of percentage of a whole. It is a graph that makes use of a circle divided into parts that represents the proportion of the whole.</span>

6 0

3 years ago

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