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3 years ago

Will give brainliest

Mathematics

1 answer:

erastova [34]3 years ago

8 0

Answer:

1. A, 2. A , good luck!!!

Step-by-step explanation:

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What is the area of a rectangle with a length 4x - 3 and width 6x = 9?

Romashka-Z-Leto [24]

I hope this helps you

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4 years ago

Two cubes have their surface areas in the ratio 1:4 , what is the ratio of their volumes ?

yKpoI14uk [10]

Answer:

1 : 8

Step-by-step explanation:

For similar figures with ratio of sides = a : b

Then ratio of areas = a² : b² and

ratio of volumes = a³ : b³

Given ratio of areas = 1 : 4

linear ratio = $\sqrt{1}$ : $\sqrt{4}$ = 1 : 2

ratio of volumes = 1³ : 2³ = 1 : 8

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4 years ago

Best estimate for 1kg =1,000g

Sphinxa [80]

I think the answer is 1g

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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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5 1/10 divided by 1 1/5

hoa [83]

4.25 is the correct answer

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4 years ago

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