All categories

2 years ago

In isosceles triangle RST below, what is the value of y?

Mathematics

2 answers:

son4ous [18]2 years ago

7 0

Answer:

y =71

Step-by-step explanation:

The sum of the angles of a triangle add to 180

y+y+38 = 180

Combine like terms

2y +38 =180

Subtract 38 from each side

2y+38-38 =180-38

2y = 142

Divide each side by 2

2y/2 =142/2

y = 71

nadezda [96]2 years ago

6 0

Answer:

71°

Step-by-step explanation:

total angle in a triangle is 180

y + y + 38 = 180

2y = 142

y = 71°

You might be interested in

Can someone pls pls PLS, help me out? ASAP!! (Geometry) “Complete the proof”

Maru [420]

1) $\overline{AB} \perp \overline{BD}$ , $\overline{AB} \cong \overline{DB}$ , $\overline{AC} \cong \overline{DE}$ (given)

2) $\angle ABD$ is a right angle (perpendicular lines form right angles)

3) $\triangle ABD$ and $\triangle DEB$ are right triangles (a triangle with a right angle is a right angle)

4) $\triangle ABD \cong \triangle DEB$ (HL)

5) $\angle ACB \cong \angle DEB$ (CPCTC)

8 0

1 year ago

Solve for m: 2r= m/r m = 2r m = 2r squared by 2 m=r m = 2

Bad White [126]

Solution

Switch sides so that m is on the left side

m/r = 2r

Them multiply both sides by r

mr/r = 2rr

Now simplify the equation

m = 2r^2

Therefore the equation evaluates to
m = 2r squared by 2

6 0

2 years ago

A circle with centre O has a radius of 6.2 cm.

Paul [167]

Answer:

it could either be 10.781 or 65.6, if not either of em then iam truly very sorry

Step-by-step explanation:

6 0

2 years ago

find the value of x. Can someone please explain how to find the answer? I'm so confused at the point

Phantasy [73]

Check the picture below

5 0

2 years ago

What is the surface area ,in square meters of the toy box

salantis [7]

Answer:426m^2

Step-by-step explanation:

8 0

2 years ago