How to know if an equation is false, true, or an open scentence

2 answers:

7 0

To know when a equation is false, it is simply incorrect. When a equation is true, it will be correct. An open sentence is a statement which contains a variable, and becomes either true or false, depending on the value that replaces the variable. Hope this helps!

beks73 [17]3 years ago

4 0

Well it is true if the problem is the right with the right answer. If not you have a false eqaution.

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Find the value of y.

olga nikolaevna [1]

Try this option:
1. the sides of the biggest triangle are 16; x and √(16²-x²); the sides of the smallest triange are x;5 and y. The smallest triangle ~ the biggest triangle. Using the property of the similar triangles:
$\frac{x}{5} = \frac{16}{x}, \ then \ x= \sqrt{80}$
2. according to the Pyphagorean theorem (in the smallest triangle):
$y= \sqrt{ \sqrt{80^2} -5^2} = \sqrt{55}$

answer: y=√55.

4 0

3 years ago

PLEASE HELP ASAP!!

Arada [10]

This is like the equivalent to a jar with 4 green balls and 6 white balls, where you are picking 3. (The 4 green balls signify the friends from kindergarten.)

You want to solve the probability that the first two balls are green and the third is white.
First draw --> 4 green out of 10 balls --> 4/10 = 2/5

Second draw --> 3 green out of 9 balls --> 3/9 = 1/3

Third draw --> 6 white out of 8 balls --> 6/8 = 3/4

2/5 x 1/3 x 3/4

= 6/60

= 1/10

so the answer is 1/10 (or 10%)

6 0

2 years ago

Read 2 more answers

X+13/2=4 what x equal

Harlamova29_29 [7]

Step-by-step explanation:

x+13÷2×2=4×2

x+13=8

x+13-13=8-13

x=8-13

x=-5

7 0