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xxMikexx [17]
3 years ago
13

Solve the stimultanious equations

Mathematics
1 answer:
AleksAgata [21]3 years ago
6 0

Answer:

x = -1 /2= -0.5 y = 15 /10= 1.5

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10. What is the measure of angle C?<br> A. 25°<br> B. 30°<br> C. 60°<br> D. 75°
Reil [10]

Answer:

D

Step-by-step explanation:

x + 5 + 3x + C = 180                All triangles have 180 degrees.

4x + 5 + C = 180

But C must be equal to 3x. Notice the markings on the lets of the triangle.

4x + 5 + 3x = 180

7x + 5 = 180                          Subtract 5 from both sides

7x = 180 - 5

7x = 175

x = 25

But angle C = 3x

C = 3*25

C = 75

8 0
3 years ago
Choose the correct word that completes each statement about inscribing a square in a circle.
Anna11 [10]

Answer:

1. Perpendicular

2. Isosceles

3. Never

Step-by-step explanation:

1. AC ⊥ BD because diameter of a square are perpendicular bisector of each other.

2. In Δ AOB , By using pythagoras : AB² = OA² + OB² .......( 1 )

In Δ COB , By using pythagoras : BC² = OC² + OB²  ..........( 2 )

But, OA = OC because both are radius of same circle

So, by using equations ( 1 ) and ( 2 ), We get AB = BC ≠ AC

⇒ ABC is a triangle having two equal sides so ABC is an isosceles triangle.

3. The side can never be equal to radius of circle because the side of the square will be chord for the circle and in a circle chord can never be equal to its radius


7 0
2 years ago
3^5 + 6^3 evaluate the expression
tigry1 [53]

Answer:

459

Step-by-step explanation:

because 3^5 is 243 and 6^3 is 216 then add up 243+216=459

4 0
3 years ago
Jennifer got a box of chocolates. The box is a right triangular prism shaped box. It is 7 inches long, and the triangular base m
Dafna1 [17]
The surface area would be 68 squared inches. I hope this helps!
4 0
3 years ago
4,2,1,...<br> Find the 9th term.
harkovskaia [24]

Answer: 0.015625

Step-by-step explanation:

i noticed the pattern. it is getting divided by 2 each time. so, i just divided each new number by 2 and got 0.015625.

8 0
3 years ago
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