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3 years ago

Can someone please answer and explain to me

Mathematics

2 answers:

Eddi Din [679]3 years ago

5 0

Answer:

30 degrees i hope this helps! :)

Step-by-step explanation:

measure of angle Q is 90 degrees

measure of angle R is 60 degrees

measure of angle S is 30 degrees

side RQ is 1 unit

side RS is 2 units

side SQ is 1.732 units

Right Scalene Triangle

Side a = 1

Side b = 1.73205 = √3

Side c = 2

Angle ∠A = 30° = 0.5236 rad = π/6

Angle ∠B = 60° = 1.0472 rad = π/3

Angle ∠C = 90° = 1.5708 rad = π/2

C=90°B=60°A=30°b=1.732a=1c=2

Area = 0.86603

Perimeter p = 4.73205

Semiperimeter s = 2.36603

gtnhenbr [62]3 years ago

3 0

Answer:

30 degrees

Step-by-step explanation:

USE the sine function to determine S. Set up the equation:

sine(S) = 1/2 -->

S = Sine^-1(1/2) -->

S = 30 degrees

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Which expression could be substituted for y in the second equation to find the value of x?

EastWind [94]

value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Step-by-step explanation:

We need to find Which expression could be substituted for y in the second equation to find the value of x

The given equations are:

$2x-y=-10\,\,\,(1)2x - 3y= -1\,\,\,\,(2)$

For putting value of y in second equation, we will find from equation 1

From equation 1:

$2x-y=-10\\-y=-10-2x\\y=10+2x$

Putting value of y i.e y=10+2x in equation (2) to find value of x

$2x-3y=-1\\2x-3(10+2x)=-1\\2x-30-6x=-1\\-4x=-1+30\\-4x=29\\x=\frac{29}{-4}\\x=-\frac{29}{4}$

So, now finding value of y by putting value of x= -29/4 in eq(1)

$2x-y=-10\\2(-\frac{29}{4})-y=-10\\-\frac{29}{2}-y=-10\\-y=-10+\frac{29}{2}\\ -y=\frac{-20+29}{2}\\ -y=\frac{9}{2}\\ y=-\frac{9}{2}$

So, value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Keywords: System of equations

Learn more about System of equations at:

#learnwithBrainly

6 0

4 years ago

There are two different clocks in Wendy's house, one is 20 minutes faster in a day, and the other is 30 minutes slower in a day.

Annette [7]

Answer:

The answer is below

Step-by-step explanation:

For the first clock that is 20 minutes faster in a day, that means it is $\frac{20\ min}{60\ min/hr}=\frac{1}{3}hr$ faster every day. For it to show the correct time, the clock should be 24 hours faster.

Since 1 day = 1/3 hr faster

x days = 24 hr faster

Let x number of days be required to be 24 hr faster. To find x we use the formula:

$x=\frac{24 \ hr* 1\ day}{\frac{1}{3}hr } \\x=72\ days$

For the second clock that is 30 minutes slower in a day, that means it is $\frac{30\ min}{60\ min/hr}=\frac{1}{2}hr$ faster every day. For it to show the correct time, the clock should be 24 hours slower.

Since 1 day = 1/2 hr slower

y days = 24 hr faster

Let x number of days be required to be 24 hr slower. To find x we use the formula:

$y=\frac{24 \ hr* 1\ day}{\frac{1}{2}hr } \\y=48\ days$

4 0

3 years ago

If cos 0 = -4/9 with 0 in Quadrant II, find sin 0

Neko [114]

Sin0= y/r

X= -4 and r= 9 (radius is also the hypotenuse)
In quadrant II y is positive
X^2 +y^2 = r^2

-4^2 + y^2 = 9^2
16 + y^2 = 81
Y^2 = 81-16
Y^2 = 65
Y= sqrt65

Sin0= sqrt65/9

4 0

3 years ago

Ramon makes a spinner with 4 colors. he colors 25% of the spinner red, 15% blue, 40% orange, and the rest green. ramon then spin

Murljashka [212]

Answer:

c. the spinner landing on orange or red

Step-by-step explanation:

So first you find how much is green

25 + 15 + 40 = 80

100 - 80 = 20

So the amount green is 20%

Then you choose the color that has the biggest percentage because it has a higher change of being chosen

25% is red

15% is blue

40% is orange

20% is green

orange and red is the biggest amount/ has the biggest percentage

c is your answer

3 0

3 years ago

PLEASE HELP AND PLEASE DON'T GUESS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

ddd [48]

It actually depdens on which one you set for x and y

let's say that x=number of televisions sold
y=number of copmuter sold

72x+90y=profit
wants to make at least 360
72x+90y≥360
graph

one way is to find the x and y intercepts, first solve for '=' and not '≥'
x intercept, set y=0
72x=360
x=5
x intercept at (5,0)

yintercept
set x=0
90y=360
y=4
yiint at (0,4)

garph the points (5,0) and (0,4) and connect those points with aline
see witch side to graph one
is (0,0) in the solution set?
0≥360
false
it is not
shade on the side that it isn't on

we have
90x+72y≥360
that underline tells us that (0,5) and (4,0) are possible solutions

hmm
see each
the answer is A, if we do x=computers and y=TV, then D is also acceptable

answer is A

6 0

3 years ago