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3 years ago

A square has one side that is 19 cm long. What is the perimeter of the square?

2 answers:

6 0

Since a square has 4 equal sides, just do 19 + 19 + 19 + 19 which is 76. Or, 19 x 4, even though you add with permieter, it'll still work on a square.

Hope I helped!

mars1129 [50]3 years ago

4 0

Square has 4 equal sides and the peremeter is adding all the sides together and so 19 + 19 + 19 + 19 = 76

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Jon is 3 years younger than Laura. The product of their ages is 1,330. If j represents johns age and j+3 represents Laura’s age,

Lyrx [107]

645668888888854389000099876543322247

4 0

3 years ago

PLZ HELP ME What shape is this cross-section?

Irina18 [472]

Answer:

i'm not sure if i'm right but think is cube

6 0

3 years ago

Y=x+1 y=x^2-1 please help i don't understand

ololo11 [35]

ANSWER

The solution is

$(x=1,y=2),(x=2,y=3)$

EXPLANATION

We have

$y=x+1---(1)$

and

$y=x^2-1---(2)$

Let us substitute equation (1) in to equation (2). This gives us,

$x+1=x^2-1(2)$

We rewrite this as a quadratic equation as the highest degree is 2.

$x^2-x-1-1=0$

This implies that

$x^2-x-2=0$

we factor to obtain,

$x^2+x-2x-2=0$

$x(x-1)-2(x-1)=0$

$(x-1)(x-2)=0$

This means,

$(x-1)=0\:\: or\:\:(x-2)=0$

$x=1\:\: or\:\:x=2$

We substitute this values into any of the above equations, preferably equation (1)

When, $x=1$ , $y=1+1=2$

When, $x=2$ , $y=2+1=3$

The solution is

$(1,2),(2,3)$

8 0

3 years ago

3(x - 2) = 12 show how you would solve plz

Yakvenalex [24]

Answer: x=6

Step-by-step explanation:

3(x-2)=12

3x-6=12

3x=18

x=6

8 0

3 years ago

Read 2 more answers

Julian jogs 222 kilometers east, 444 kilometers north, and then 777 kilometers west. how far is julian from his starting positio

lawyer [7]

If you would like to know how far is Julian from his starting position, you can calculate this using the following steps:

First, you have to make a right triangle, where the hypotenuse of this triangle will actually be the distance we are looking for. The distances of the other two sides are 444 kilometers, and 777 kilometers - 222 kilometers; to be exact: 444 kilometers and 555 kilometers.

The distance we are interested in ... d:
d^2 = 444^2 + 555^2
d^2 = 197136 + 308025 = 505161
d = sqrt(505161)
d = 710.7 kilometers

The correct result would be 710.7 kilometers.

7 0

3 years ago