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3 years ago

What is the measure of Angle 1?

Mathematics

2 answers:

strojnjashka [21]3 years ago

6 0

Answer:

130

Step-by-step explanation:

50 (given angle) minus 180 (what the angle should add up to)

50-180 = Measure of angle 1 (130)

ANEK [815]3 years ago

3 0

Answer:

it is not 130.its 50

Step-by-step explanation:

50 is basically connected to the other part hope this helps the brainliest

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Solve by elimination: x-2y= -7 ; 4x+2y= 22

svp [43]

Apply the elimination method to the 2y terms since they are opposites & therefore can eliminate. Combine the rest of the terms, vertically.

x-2y= -7
4x+2y= 22
5x = 15
Divide both sides by 5.
x=3

Plug the x value to one of the original equations and solve for y.

4x + 2y = 22
4(3) + 2y = 22
12 + 2y = 22
Subtract by 12 on both sides.
2y = 10
Divide by 2 on both sides.
y = 5

Therefore, the solution to the system of equations shown is:

x=3 y=5

or

as an ordered pair (3, 5).

6 0

4 years ago

Graph 3x+y=-10 -x+3y=0

nikdorinn [45]

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

We have the equations in the standard form. Convert to the slope-intercept form:

$3x+y=-10$ subtract 3x from both sides

$y=-3x-10$

$-x+3y=0$ add x to both sides

$3y=x$ divide both sides by 3

$y=\dfrac{1}{3}x$

-----------------------------------------------------

We need only two points to plot a graph of each function.

$y=-3x-10$

for x = 0 and for x = -3:

$y=-3(0)-10=0-10=-10\to(0,\ -10)\\\\y=-3(-3)-10=9-10=-1\to(-3,\ -1)$

$y=\dfrac{1}{3}x$

for x = 0 and for x = -3:

$y=\dfrac{1}{3}(0)=0\to(0,\ 0)\\\\y=\dfrac{1}{3}(-3)=-1\to(-3,\ -1)$

Look at the picture.

3 0

3 years ago

I need help with this one.

nexus9112 [7]

9514 1404 393

Answer:

1,563.5 in³
904.8 yd³
2,144.7 mm³
1,288.2 cm³
434.9 in³

Step-by-step explanation:

The formula for the volume of a sphere is ...

V = (4/3)πr³

When you have several of these calculations to do, it is convenient to let a graphing calculator or spreadsheet do them. A spreadsheet can do the rounding for you, too. The results are attached. The units are the cube of the units of the radius.

Example calculation:

(4) Radius = diameter/2 = 13.5 cm/2 = 6.75 cm

V = (4/3)π(6.75 cm)³ = 4.18879 × 307.547 cm³ = 1288.2 cm³

Note that the constant (4/3)π ≈ 4.18879 remains the same for each calculation. All you need to do is multiply that by the cube of the radius.