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2 years ago

Is it possible to form a square whose area is 18 by connecting four lattice points? Explain.

1 answer:

5 0

Note the squares... 13 is possible because it is a sum of two squares (integers) 9 + 4 .. use (0,3) & (2,0) ... get the square roots and place on different coordinate axes... for a simpler value. but there is none for 15... there is one for 18 ... 18 = 3^2 + 3^2 ... try (0,3) ,(3,0) , (3,6), (6,3).

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In Exercises 13-16, estimate the slope of the line.

mrs_skeptik [129]

Answer:

Hi there!

The answer for number 13 is 2.

I picked two coordinates: (1,1) and (2,3)

Then I used the (y1-y)/(x1-x) equation to get 2.

The answer for number 14 is 2.

I picked two coordinates: (1,0) and (2,2)

Then I used the (y1-y)/(x1-x) equation to get 2.

6 0

2 years ago

I help with this 7th grad math question

HACTEHA [7]

X=32
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7 0

2 years ago

Find the value of x. Round the answer to the nearest tenth, if needed.

wolverine [178]

X/49 = 21/x
x^2 = 21(49) = 1029
x = √1029 = 32.1
x = 32.1

6 0

2 years ago

Read 2 more answers

Lashonda is saving money to buy a game. So far she has saved $6, which is two-thirds of the total cost of the game. How much doe

aliina [53]

Answer:

The game costs $9

Step-by-step explanation:

I wrote an equation using the variable "t" for the total cost of the game.

6=2/3t

t=6/2/3

t=(6/1)(3/2)

t=18/2

t=9

4 0

2 years ago

For a certain model of car the distance d required to stop the vehicle if it is traveling at v mi/h is given by the formula d =

enyata [817]

Given that <span>For a certain model of car the distance $d$ required to stop the vehicle if it is traveling at $v$ mi/h is given by the formula $d=v+\frac{v^2}{20}, where [tex]d$ is measured in feet.

If Kerry wants her stopping distance not to exceed 75 ft, then the range of speeds (in mi/h) can she travel is obtained as follows:

$v+ \frac{v^2}{20} \leq75 \\ \\ 20v+v^2\leq1,500 \\ \\ v^2+20v+100\leq1,500+100 \\ \\ (v+10)^2\leq1,600 \\ \\ |v+10|\leq\sqrt{1,600} \\ \\ -40\leq v+10\leq40 \\ \\ -40-10\leqv\leq v\leq40-10 \\ \\ -50\leq v\leq30$

Therefore, the range of speed she can travel is $v\leq30\ mi/hr$
</span>

8 0

2 years ago