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3 years ago

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Bingel [31]3 years ago

5 0

Answer:

:;;;,,,

Step-by-step explanation:

^^^^^^^^^!!~~~

Alexeev081 [22]3 years ago

3 0

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(Ummmmm ?????)
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Where is the location of the vertex of the parabola on a coordinate grid?

IrinaVladis [17]

Answer:

below the x-axis

Step-by-step explanation:

y=x^2+2x-3

the vertex is located on the axis of symmetry

to find h ax^2 +bx+c

h= -b/2a = -2/2(1) = -1

the x coordinate of the vertex is -1

to find the y coordinate, substitute into the equation

y = (-1)^2 +2(-1) -3

= 1-2-3

= -4

(-1,-4)

the vertex is below the x axis

7 0

3 years ago

The radius of a cylinder is increased by 15% and its height is decreased by 20%. Find the percentage change in the volume of the

Alexxx [7]

First cylinder(V1) = $\pi$ r²h

insert 10 as r&h
⇒V1 = 1000 $\pi$

second cylinder(V2)= $\pi$ ×11.5² × 8 = 1058 $\pi$

V2-V1 = 58 $\pi$

100 × $\frac{58 \pi }{1000 \pi }$ = 5.8% increase

8 0

3 years ago

How can you tell if a set of bivariate data shows a linear relationship?

Anastasy [175]

<span>It introduces the relationship between two variables and is called correlation. Proportionality or variation is state of relationship or correlation between two variables It has two types: direct variation or proportion which states both variables are positively correlation. It is when both the variables increase or decrease together. On the contrary, indirect variation or proportion indicates negative relationship or correlation. Elaborately, the opposite of what happens to direct variation. One increases with the other variables, you got it, decreases. This correlations are important to consider because you can determine and identify how two variables relates with one another. Notice x = y (direct), y=1/x (indirect)
</span>

5 0

3 years ago

I am one of the numbers represented on a number line when you divide the segment between -15 and 25 into 4 equal parts. I am pos

Aliun [14]

Answer:

2, 3, 5, 7, 11, 17, 19, 23

Step-by-step explanation:

The segment between - 15 and 25 has 40 numbers given by

25 - -15

= 25 + 15

= 40

Divided into 4 segments, each would contain 10 numbers such that the

1st segment is from -15 to -5 (which is -15 + 10)

2nd segment is from -5 to 5 (which is -5 + 10)

3rd segment is from 5 to 15 (which is 5 + 10)

4th segment is from 15 to 25 (which is 15 + 10)

Given that the unknown number is prime and positive this may be

2 or 3 or 5 from the 2nd segment

7 or 11 from the third segment

17 or 19 or 23 from the 4th segment

5 0

3 years ago

A circle has an area of 50 square meters. Which answer is closest to the measure of its diameter?

gregori [183]

Area of a circle is computed by multiplying pi to the square of the circle's radius.

A = πr²
50m² = 3.14 r²
50m²/3.14 = r²
r² = 15.92m²
r = √15.92m²
r = 3.99m

Diameter is computed by multiplying the radius twice.
d = 2r
d = 2(3.99m)
d = 7.98m or rounded up to 8 m

8 0

3 years ago