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3 years ago

What is the surface area

Mathematics

1 answer:

lesya692 [45]3 years ago

6 0

Answer:660

Step-by-step explanation:

there you go please rate full satr

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Solve -21 = -9 + 2/3b

Svet_ta [14]

Final Answer: $b = -18$

Steps/Reasons/Explanation:

Question: Solve $-21 = -9 + \frac{2}{3}b$ .

Step 1: Simplify $\frac{2}{3}b$ to $\frac{2b}{3}$ .

$-21 = -9 + \frac{2b}{3}$

Step 2: Regroup terms.

$-21 = \frac{2b}{3} - 9$

Step 3: Add $9$ to both sides.

$-21 + 9 = \frac{2b}{3}$

Step 4: Simplify $-21 + 9$ to $-12$ .

$-12 = \frac{2b}{3}$

Step 5: Multiply both sides by $3$ .

$-12$ × $3 = 2b$

Step 6: Simplify $-12$ × $3$ to $-36$ .

$-36 = 2b$

Step 7: Divide both sides by $2$ .

$-\frac{36}{2} = b$

Step 8: Simplify $-\frac{36}{2}$ to $-18$ .

$-18 = b$

Step 9: Switch sides.

$b = -18$

~I hope I helped you :)~

3 0

2 years ago

Can someone please help me

EastWind [94]

Let
x = measure of angle TAP
y = measure of angle BRE

We're told that "angle BRE is its own complement" meaning that angle BRE added to itself is 90 degrees. In algebraic terms, we can say

y+y = 90
2y = 90
2y/2 = 90/2
y = 45

So angle BRE is 45 degrees. Note how 45+45 = 90.

We also know that angle TAP and angle BRE are supplementary. They add up to 180 degrees

x+y = 180
x+45 = 180 ... replace y with 45
x+45-45 = 180-45 ... subtract 45 from both sides
x = 135

Since we defined x to be the measure of angle TAP, this means that angle TAP is 135 degrees

5 0

3 years ago

Help it is impossible

emmasim [6.3K]

D is the correct answer
hope it helps

4 0

2 years ago

Need answers ASAP

dimaraw [331]

All angles of a triangle added together equal 180 degrees
180=(6x-1)+(x+14)+(20) which simplifies to 180=7x+33
next, solve for x by subtracting 33
147=7x
then solve by dividing by 7
21=x
plug x back into your original equations to find the angle measures
A=6(21)-1 A=125 degrees
B=(21)+14 B=35 degrees

7 0

3 years ago

Read 2 more answers

Find the value of x. Round your answer to the nearest tenth (Will give brainiest)

ratelena [41]

Answer:

Its 67.9 but technically its 67.912 *hope this helps

Step-by-step explanation:

Right scalene triangle.

Sides: a = 66 b = 16 c = 67.912

Area: T = 528

Perimeter: p = 149.912

Semiperimeter: s = 74.956

Angle ∠ A = α = 76.373° = 76°22'23″ = 1.333 rad

Angle ∠ B = β = 13.627° = 13°37'37″ = 0.238 rad

Angle ∠ C = γ = 90° = 1.571 rad

Height: ha = 16

Height: hb = 66

Height: hc = 15.55

Median: ma = 36.674

Median: mb = 66.483

Median: mc = 33.956

Inradius: r = 7.044

Circumradius: R = 33.956

Vertex coordinates: A[67.912; 0] B[0; 0] C[64.142; 15.55]

Centroid: CG[44.018; 5.183]

Coordinates of the circumscribed circle: U[33.956; 0]

Coordinates of the inscribed circle: I[58.956; 7.044]

Exterior (or external, outer) angles of the triangle:

∠ A' = α' = 103.627° = 103°37'37″ = 1.333 rad

∠ B' = β' = 166.373° = 166°22'23″ = 0.238 rad

∠ C' = γ' = 90° = 1.571 rad

8 0

3 years ago