Brenda observes that the keyboard and the screen of an open laptop lie on two different planes. In how many lines do the planes containing the keyboard and the screen intersect?

Answers

Answer 1

Answer: Let's assume the laptop is opened at 90 degrees (this is done for the sake of simplicity, is actually irrelevant) then each plane would be analogous to the 'x' and 'y' planes you see in a Cartesian Plane, which only intersect at one point called the Origin. Any two lines with different slopes will intersect only one time (if they're parallel they have the same slope)

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The Slope of a Line(8,2) and (5,11)
Calculate the slope of the line
that contains the given points.

Answers

Answer:

m = -3

Step-by-step explanation:

Slope Formula: $m = (y2-y1)/(x2-x1)$

Simply plug in our coordinates to find slope:

m = (11 - 2)/(5 - 8)

m = 9/-3

m = -3

what is the equation of a parabola whose vertex is (-6,0) and whose graph is half as tall as y=x^2 and opens upside down?

Answers

$The\ vertex\ form:y=a(x-h)^2+k\n\nvertex\ (h;\ k)\to(-6;\ 0)\n\nthen:y=a[x-(-6)]^2+0=a(x+6)^2\n\ngraph\ is\ half\ as\ tall\ as\ y=x^2\ and\ o\ pens\ upside\ down\ then\ a=-2\n\nAnswer:y=-2(x+6)^2$

If I understood correctly "graph is half as tall as y=x^2".

2 3/4 Quarts is how many pints?

Answers

Hey there,

2.75q=5.5

so there is 1 quart in 2 pints so

so 2=4+3/4=.5 so 5.5

Mark brainlyist if helped!!!!

For place values that occur to the left of the decimal point, each place value is ten times ______ than the place value to its right.a. exponential
b. fractional
c. smaller
d. larger

Answers

d. think about it this way. the closer it is to decimal, the closer it is to a whole number which is the "biggest"

Final answer:

Each place value to the left of the decimal point in a number is ten times larger than the place value to its right.

Explanation:

In mathematics, specifically in the idea of place value, each position to the left of the decimal point is ten times larger than the place value to its right. For example, in the number 1234.0, the '1' is in the thousands place, which is ten times larger than the hundreds place where '2' is located. Likewise, the '2' in the hundreds place represents a value that is ten times larger than the tens place where '3' resides, and so on.

Learn more about Place Value here:

brainly.com/question/27734142

#SPJ2

The table shows the battery life of four different mobile phones.Mobile Phone Battery Life
Phone Battery Life
A 20
B 25
C 10
D 18

If 7.75% of the battery life of each mobile phone is used in a day by a typical user, for which mobile phone is 0.775 hour of battery life used in a day?
Phone A
Phone B
Phone C
Phone D

Answers

Answer:

Probably phone C

Step-by-step explanation:

Answer:

1. B

2. D

hope this helped

In sunlight, a vertical stick 6 ft tall casts a shadow 2 ft long. At the same time a nearby tree casts a shadow 14 ft long. How tall is the tree? Round to the nearest tenth A) 42.0 ft 
B) 85.7 ft 
C) 18.0 ft 
D) 52.5 ft<br /

Answers

The nearby tree's height is 42.0 ft, which is A

Alrighty friend, let me explain you a math.
We're gonna want to start by setting up a fraction. We'll set up the fraction as height/shadow. The stick's height is 6 feet and the shadow is 2 feet, making the fraction 6/2. The second fraction only gives us the shadow, so the fraction is x/14.
Now, we're gonna do some cross multiplication m8. 6/2 x x/14. Multiply 6x14= 84 and 2x(x)= 2x ---> 2x = 84
Do you some basic algebra here, and divide both sides by 2.
Your final answer is 42, so the tree is 42 feet tall.

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1+4 =5 2+5=12 3+6=21 8+11=

A = bh; solve for hh =