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3 years ago

9

Ryan shaded 70 squares on his hundredths grid. Sarah shaded 80 squares on her hundredths grid .Which decimals show how much of t

he grid Ryan shaded?

1 answer:

Novay_Z [31]3 years ago

7 0

Answer:

0.7

Step-by-step explanation:

70 shaded squares out of 100

= 70/100

=0.7

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Angelo rode his bike around a bike trail that was 1/4 of a mile long. He rode his bike around the trail 8 times. Angelo says he

coldgirl [10]

They are both correct it's just that the say it differently 8/4 IS 2 so yea. I'm a middle schooler.

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4 years ago

What is the value of x in the diagram?

makvit [3.9K]

Answer:

x=5

Step-by-step explanation:

Since this is a right triangle, we can use the pythagorean theorem

a^2 + b^2 = c^2

x^2+ ( 2x+2)^2 = (2x+3)^2

FOIL the squared terms

x^2 +(4x^2 + 4x+4x+4) = 4x^2 + 6x+6x +9

Combine like terms

5x^2+8x +4 = 4x^2 +12x +9

Subtract 4x^2 +12x +9 from each side

5x^2+8x +4 -4x^2 -12x -9= 4x^2 +12x +9-4x^2 -12x -9

x^2 -4x -5 =0

Factor

(x-5) (x+1) = 0

Using the zero product property

x=5 x=-1

But x cannot be negative or we would have negative length

x=5

6 0

3 years ago

Solve 2x^3+7x^2-2x-1=o

Mashcka [7]

Answer:

$x=\sqrt{3}-2\\x=-\sqrt{3}-2\\x=\frac{1}{2}$

Step-by-step explanation:

This is a hard one

We have to use the rational root theorem

$2x^3+7x^2-2x-1$ = 0

We have to find all the factors of a and d and put them in a fraction

$a=2\\d=-1\\\frac{1}{1,2}$

We then plug them into the equation to see if any of them work

The equation isn't true when plugging 1, but is true when plugging in 1/2

factored form of 1/2 is (2x-1)

Then we divide the original equation by (2x-1) (you can use synthetic division or long division, it would be hard to type out the process for that) to get $x^2+4x+1$

So now the equation is $(2x-1)(x^2+4x+1)$

Solve the second half of this equation using the quadratic formula to get

$\sqrt{3}-2$ and $-\sqrt{3}-2$

We already know the solution for the first half of the equation (1/2)

So the final answers are:

$x=\sqrt{3}-2, -\sqrt{3}-2, \frac{1}{2}$

8 0

3 years ago

Can someone plz help me dont know the awnser

Bumek [7]

The area of the right triangle = $\frac{1}{2}bh$

b = base = SV = 12.3
h = hight = HL = 24.6
A = area
$\frac{1}{2}bh = A$
$\frac{1}{2}(12.3)(24.6) = 151.29$

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3 years ago

A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.

denis23 [38]

Area of a square = side^2
area = 6.25^2 = <span> <span> <span> 39.0625 </span> </span> </span> square feet

= 39.06 (rounded)

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3 years ago