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postnew [5]
3 years ago
6

What number must you add to complete the square? x^2 +4 =23A. 4B. 8C. 16D. 2

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
8 0
A. 4 

to complete the square, take half of the the second number and square it
You might be interested in
4/3 divided by 11/12 whats the answer
AveGali [126]

Answer:

16/11 is the answer to this.

4 0
3 years ago
Which dimensions can create more than one triangle? A. Three angles measuring 75°,45°, and 60°. B. 3 sides measuring 7, 10, 12?
NeTakaya

This is vague.  Any dimensions that make a triangle can make more than one, just draw another right next to it.  What's really being asked is which dimensions can make more than one non-congruent triangle.

<span>A. Three angles measuring 75°,45°, and 60°.

That's three angles, and 75+45+60 = 180, so it's a legit triangle. The angles don't determine the sides, so we have whole family of similar triangles with these dimensions.  TRUE

<span>B. 3 sides measuring 7, 10, 12?

</span>Three sides determine the triangles size and shape uniquely; FALSE

<em>C. Three angles measuring 40</em></span><span><em>°</em></span><em>, 50°</em><span><em>, and 60°? </em>

40+50+60=150, no such triangle exists.  FALSE

<em>D. 3 sides measuring 3,4,and 5</em>

Again, three sides uniquely determine a triangle's size and shape;  FALSE


</span>
7 0
3 years ago
Read 2 more answers
5 rows of 4 snack-size boxes of cereal in its bottom layer and is 3 layers high
leva [86]
For this problem, you're finding volume. The expression for volume is l•w•h (length times width times height). 
5 0
3 years ago
The height, H,of a cylinder is 5 units less than 3 times the radius, R, which expression expresses the height of the cylinder in
Zina [86]
The answer is:  [B]:  " 3r − 5 " .
_______________________________________________________
   
H = 3r <span>− </span>5
_______________________________________________________
3 0
3 years ago
1. Una escalera de 4 m de longitud se apoya sobre una pared vertical. Si la distancia entre la base de la escalera a la pared es
enot [183]

Answer:

puedes resolver de dos maneras si diste teorema de Pitágoras lo aplicas

hipotenusa al cuadrado = cateto 2 +cateto 2 ( el 2 significa al cuadrado)

sustituyes

hipotenusa= 4m

cateto= 2,5

hay que hallar el otro cateto que nos daría la altura a la que está la escalera

despejamos y tenemos

cateto 2= hip2 -cat2

cat2=(4)2-(2,5)2=

       =   16-6,25=9,75

luego hallamos la raíz cuadrada de 9,75= 3,12

     

la altura a la que se encuentra es 3,12m

-si aun no diste Pitágoras podes representarlo en una hoja utilizando cm en lugar de metros( a escala). trazas el triángulo rectángulo la base te la da la distancia a la cual se encuentra la escalera de la pared es decir 2,5cm trazas la hipotenusa de 4cm de manera que coincida con el cateto opuesto , y mides el valor de este ,será de 3,12cm no olvides que la respuesta la debes dar en metros ya que es la unidad de medida que te da.

4 0
2 years ago
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