3 years ago

I am giving Brainiest Answer +25 points to anyone who can answer these correctly, try you're best and take you're time :)

Mathematics

1 answer:

Ede4ka [16]3 years ago

6 0

Answer:

1. 1,728m

2. 570cm

3. 748mm

4. 37mL

5. 65mL

6. 2.3mL

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2x5x1742x2133+12/4= PlS hellllp

Fynjy0 [20]

Answer:

37,156,863

Step-by-step explanation:

2 x 5 x 1742 x 2133 + 12/4 =

10 x 1742 x 2133 +12/4 =

17420 x 2133 + 3=

37,156,860 + 3 =

37,156,863

8 0

3 years ago

A random variable x takes four possible values, 0, 2, a, and b, where a and b are unknown numbers. if pr[x = 0] = 0.2, pr[x=2] =

Alexus [3.1K]

$\displaystyle\sum_{x\in\{0,2,a,b\}}\mathbb P(X=x)=1$
$\mathbb P(X=0)+\mathbb P(X=2)+\mathbb P(X=a)+\mathbb P(X=b)=1$
$0.2+0.4+0.3+\mathbb P(X=b)=1$
$\implies\mathbb P(X=b)=0.1$

$\mathbb E(X)=\displaystyle\sum_{x\in\{0,2,a,b\}}x\mathbb P(X=x)=2.8$
$0\mathbb P(X=0)+2\mathbb P(X=2)+a\mathbb P(X=a)+b\mathbb P(X=b)=2.8$
$0.8+0.3a+0.1b=2.8$
$0.3a+0.1b=2$

$a+b=6\implies0.3a+0.1b=0.2a+0.1(6)=2$
$0.2a+0.6=2\implies0.2a=1.4\implies a=7$

7 0

3 years ago

a 20 in tall hexagonal pyramid has a regular hexagon base that can be divide into six equilateral triangles with side lengths of

Klio2033 [76]

Answer:

Step-by-step explanation:

4 0

3 years ago

The lengths of the sides of a triangle are in the extended ratio 7 : 8 :9 . The perimeter of the triangle is 96 cm. What are t

PIT_PIT [208]

Answer:

28, 32, 36

Step-by-step explanation:

If you multiply each 7, 8, and 9 by 4 you get 28, 32, and 36. The sum of those numbers is 96.

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3 years ago

Let f(x) = 2x – 1, g(x) = 3x, and h(x) = x2 + 1. Compute the following.

bonufazy [111]

4.
h(f(x)=h(2x-1)=
(2x-1)^2+1=
4x²-4x+1+1=
4x²-4x+2

5.
f(f(x))=2(2x-1)-1=4x-2-1=4x-3

6.
f o g (x)=f(g(x))
h o g (x)=h(g(x))=
(3x)^2+1=
9x²+1

4 0

3 years ago