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Irina-Kira [14]
3 years ago
8

Please explain, I don't understand why.

Mathematics
1 answer:
Bingel [31]3 years ago
5 0
Whyyyyyyyyy wutttttt
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Someone plz answer.....
BabaBlast [244]

Answer:

50°

Step-by-step explanation:

angle 5 = angle 4 ( Alternative Interior Angles are equal )

But angle 3 & angle 4 are linear pairs. So,

angle 3 + angle 4 = 180°

=> angle 3 + angle 5 = 180° (angle 5 = angle 4)

=> angle 3 + 130° = 180°

=> angle 3 = 180° - 130° = 50°

6 0
3 years ago
Round 919827 to the nearst thousand
blondinia [14]
It would be 0 because 8 is over 5 so ya
5 0
3 years ago
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You buy a game for $40, and the sales tax is $2. What percent of the game price are you paying in sales tax? Your doctor told yo
AfilCa [17]

Answer:

a) 5%

b) 24%

Step-by-step explanation:

a) You buy a game for $40, and the sales tax is $2. What percent of the game price are you paying in sales tax?

Percentage you are paying in sales tax

= Sales tax / Sale price of the game × 100

= $2/$40 × 100

= 5%

b) Your doctor told you to eat 25 grams of fiber each day. You had 6 grams of fiber for breakfast. What percent of the 25 grams of fiber have you eaten so far?

The percent of 25 grams of fiber you have eaten so far =

6 grams/25 grams × 100

= 24%

3 0
2 years ago
4x^2+2xy-10y^2+9=0 what is the value of a,b,c and the discriminant?
zavuch27 [327]

basically you treat y like a number and not a variable

Answer:

a is 4

b is 2y

c is -10y²+9

discriminant is 4(41y²-36)

Step-by-step explanation:

4x²+2xy-10y²+9=0

rewrite in standard form of a quadratic equation like ax² + bx + c = 0

4x²+2yx-10y²+9=0

basically you treat y like a number and not a variable

a is the number with the x²

right away we know a is 4 because of 4x²

b is the one with x so in this formula b is 2y

c is the number without the x which in this case is -10y²+9

discriminant is

b² - 4ac

(2y)²- (4)(4)(-10y²+9)

4y²-(16)(-10y²+9)

4y²-(16)(-10y²+9)

4y²+160y²-144

164y²-144 =

4(41y²-36)

6 0
2 years ago
The radius of a sphere is 5.5 inches. What is the surface area of the sphere? Express the answer in terms of Piin.Squared. Recal
ikadub [295]

Answer:

121

Step-by-step explanation:

EDG 21

7 0
3 years ago
Read 2 more answers
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