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3 years ago

I'm really confused on this question..could anybody help?

Mathematics

1 answer:

DerKrebs [107]3 years ago

7 0

Okay, so for example, A. A which equals 0.75 can be put in between 0 and 1 but closer to 1 by a little bit. They are just asking you to graph it, thats all.

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The vertices of a square are A(–2, 4), B(4, 4), C(4, –2), and D(–2, –2). The diagonals of the square intersect at their midpoint

sertanlavr [38]

A(–2, 4), B(4, 4), C(4, –2), D(–2, –2)
-> select some diagonal: AC
midpoint is at A+(1/2)*AC

-> calculate vector AC:
AC=(4-(-2),-2-4)=(6,-6)
-> calculate half length of AC:
(1/2)*AC=(3,-3)

A+(1/2)*AC=
(-2,4)+(3,-3)=(1,1) which is the midpoint

so the first option is correct

4 0

3 years ago

Which expression can be used to represent the phrase Lamar decreased his collection of cards by seven

jenyasd209 [6]

Answer:

$x-7$

Step-by-step explanation:

Let

x------> Lamar's collection of cards

The algebraic expression of the phrase "Lamar decreased his collection of cards by seven" is equal to subtract the number seven from Lamar's collection of cards

$x-7$

3 0

3 years ago

Com uma lata de tinta dá para pintar 10 m² de parede. Quantas latas serão necessárias para pintar uma parede de 5m de largura po

Crank

Answer:

b. 2 cans of ink

Step-by-step explanation:

In order to calculate the number of cans you need to paint the complete wall, you first calculate the area of the wall by using the information about its width and height:

$A=(5m)(2,5m)=12.5m^2$

With one can you can paint 10m^2 of wall, with two cans you can paint 20m^2, which is enough to paint the wall of 12.5m^2.

Then, you need only two cans of ink

b. 2

8 0

4 years ago

Бр - 5 =13 <br> need help !

malfutka [58]

Answer:

$p=3$

Step-by-step explanation:

$6p-5=13$

$+5$ $+5$

$6p=18$

$/6$ $/6$

$p=3$

4 0

3 years ago

Given the directrix of y = -1 and focus of (0, 3), which is the equation of the parabola?

guajiro [1.7K]

Answer:

$y=\dfrac{1}{8}x^2+1$

Step-by-step explanation:

Since the vertex is right between the vertex and the directrix, the y value of the vertex must be (3+(-1))/2=1. The x coordinate will just be the same as that of the focus, or in this case 0. This means that the vertex will be at (0,1). Since the graph opens toward the focus, it will be opening up, and since its vertex is at (0,1), it will have an equation of:

$y=\dfrac{1}{8}x^2+1$

Hope this helps!

3 0

4 years ago