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2 years ago

1. Which of the following natural numbers are perfect squares? Give reasons in support

Mathematics

1 answer:

mylen [45]2 years ago

6 0

Answer:

729 and 1024

Step-by-step explanation:

If you take the square root of all of these numbers, only 729 and 1024 will give whole numbers.

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Solve the equation using the zero-product property. (2x − 8)(7x + 5) = 0 x = –2 or x = 7 x = 4 or x = x = 4 or x = x = –4 or x =

aliya0001 [1]

$(2x-8)(7x+5)=0\iff2x-8=0\ \vee\ 7x+5=0\\\\2x-8=0\qquad\text{add 8 to both sides}\\2x=8\qquad\text{divide both sides by 2}\\\boxed{x=4}\\\\7x+5=0\qquad\text{subtract 5 from both sides}\\7x=-5\qquad\text{divide both sides by 7}\\\boxed{x=-\dfrac{5}{7}}$

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3 years ago

Mary wants to fill in a cylinder vase. At the flower store they told her that the vase should be filled 3/4 for the flowers to

Alex Ar [27]

Answer:

About 376.99 cubic inches

Step-by-step explanation:

Cylinder has a volume of:

$V=\pi r^2h$

Where

V is the volume

r is the radius

h is the height

We need to find the volume of the cylinder, then multiply that answer by 3/4 to get the solution to this problem. First, the full volume of the cylinder.

Given

r = 4

h = 10

So,

$V=\pi r^2h\\V=\pi (4)^2 (10)\\V=502.65$

Now, we multiply by 3/4:

$502.65*\frac{3}{4}=376.99$

Mary should be vase to 376.99 cubic inches

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3 years ago

Which of the following properties completes the proof?

Tresset [83]

The subtraction property of inequality can be used to proof that x = 7 from x + 8 = 15

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Given that x + 8 = 15

Hence:

x + 8 - 8 = 15 - 8 (subtraction property of inequality)

x = 7

The subtraction property of inequality can be used to proof that x = 7 from x + 8 = 15

Find out more on equation at: brainly.com/question/2972832

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2 years ago

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Kamila [148]

Answer:

Step-by-step explanation:

observe, grouping by gcd not 1

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= 28r² – 4xr + 35ry – 5xy

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= (4r + 5y)(7r – x)

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2 years ago

PLEASE HELP! GEOMETRY.

vitfil [10]

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3 years ago