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3 years ago

Calculate the length a to two decimal places.

Mathematics

2 answers:

Anton [14]3 years ago

7 0

Obtuse scalene triangle.

Sides: a = 7 b = 9 c = 3.31

Area: T = 10.324

Perimeter: p = 19.31

Semiperimeter: s = 9.655

Angle ∠ A = α = 43.868° = 43°52'6″ = 0.766 rad

Angle ∠ B = β = 117° = 2.042 rad

Angle ∠ C = γ = 19.132° = 19°7'54″ = 0.334 rad

Height: ha = 2.95

Height: hb = 2.294

Height: hc = 6.237

Median: ma = 5.808

Median: mb = 3.119

Median: mc = 7.891

Inradius: r = 1.069

Circumradius: R = 5.05

Vertex coordinates: A[3.31; 0] B[0; 0] C[-3.178; 6.237]

Centroid: CG[0.044; 2.079]

Coordinates of the circumcenter: U[1.655; 4.772]

ivolga24 [154]3 years ago

6 0

Answer:

13.68

Step-by-step explanation:

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2a + b = 3 and a - 3b = 5

vfiekz [6]

Answer:

a= 2 b=-1

Step-by-step explanation:

a-3b=5

or, a= 5+3b_(i)

substituting value of a in 2a+b=3,

2×(5+3b)+b=3

or, 10+6b+b=3

or, 7b=3-10

or, 7b=-7

b= -1

substituting value of b in(i),

a=5+3b

=5+3×(-1)

=5-3

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3 years ago

A Jersey is $35 and is 30% off. How much will you save? PLEASE HURRY WITH THE ANSWER !

yanalaym [24]

Answer:

You will save $24.50

Step-by-step explanation:

because 35 x0.3= 10.50, therefore 35 - 10.50=24.50 the answer

4 0

3 years ago

F(x) = 2x and g(x) = x + 1, find f(3) and find gf(3)

lord [1]

Answer:

6 and 7

Step-by-step explanation:

To evaluate f(3), substitute x = 3 into f(x) , that is

f(3) = 2(3) = 6

To evaluate g(f(3)), substitute f(3) = 6 into g(x)

g(6) = 6 + 1 = 7

8 0

3 years ago

If -48 equals 6(a) then a is what

Oksi-84 [34.3K]

<h2>PLEASE MARK BRAINLIEST!</h2>

Expression:

$\frac{-48}{6}=\frac{6}{6}a$

$-8 = a$

Your answer is -8.

I hope this helps!

8 0

4 years ago

Brian has 14 bins and 70 books. He places the same number of books, x in each bin.

adelina 88 [10]

Answer:

14x=70

Step-by-step explanation:

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3 years ago