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3 years ago

Can someone help me in question D

Mathematics

1 answer:

irina1246 [14]3 years ago

4 0

I’m confused. The answer is already given. It’s 0.
Explanation: A dice only has up to 6 sides, therefore it won’t be possible for it to reach the number 8.

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2/5x + 4 = 1/4x. Find x

irina1246 [14]

Answer:

Solve for x by simplifying both sides of the equation, then isolating the variable.

Exact Form:

x = − 80 /3

Decimal Form:

x = − 26. ¯

Mixed Number Form:

x = − 26 2

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4 0

3 years ago

Plzzzz answer fast..

Tema [17]

Answer:

A) Yes; AA Similarity

Step-by-step explanation:

Yes; AA Similarity

5 0

3 years ago

X + y + w = b

White raven [17]

Answer:

(a) a=6 and b≠ $\frac{11}{4}$

(b)a≠6

Step-by-step explanation:

writing equation in agumented matrix form

$\begin{bmatrix}1 &1 & 0 &1 &b\\ 2 &3 & 1 &5 &6\\ 0& 0 & 1 &1 &4\\ 0& 2 & 2&a &1\end{bmatrix}$

now $R_{2} =R_{2}-2\times R_{1}$

$\begin{bmatrix}1 &1& 0 &1 &b\\ 0 &1& 1 &3 &6-2b\\ 0& 0 & 1 &1 &4\\ 0& 2 & 2&a &1\end{bmatrix}$

now $R_{4} =R_{4}-2\times R_{2}$

$\begin{bmatrix}1 &1& 0 &1 &b\\ 0 &1& 1 &3 &6-2b\\ 0& 0 & 1 &1 &4\\ 0& 0 & 0 &a-6 &4b-11\end{bmatrix}$

a) now for inconsistent

rank of augamented matrix ≠ rank of matrix

for that a=6 and b≠ $\frac{11}{4}$

b) for consistent w/ a unique solution

rank of augamented matrix = rank of matrix

a≠6

c) consistent w/ infinitely-many sol'ns

rank of augamented matrix = rank of matrix < no. of variable

for that condition

a=6 and b=[tex]\frac{11}{4}

then rank become 3 which is less than variable which is 4.

4 0

4 years ago

Ivanna purchased a prepaid phone card for $30. Long distance calls cost 16 cents a minute using this card. Ivanna used her card

Wewaii [24]

Answer:

11 Minutes

Step-by-step explanation:

$30 - $28.24 = $1.76

$1.76/ 0.16 Cents /minute = 11 Minutes

7 0

3 years ago

Help I really need the answers to these by tomorrow morning.

Damm [24]

Answer(s):

31:

4.5 = 4 + 1/2 (0.5)

32:

23.7 = 20 + 3 + 7/10 (0.7)

33:

6.9 = 6 + 0.9

34:

35.4 = 30 + 5 + 0.4

it's kinda implied :)

Good Luck Dude.

7 0

4 years ago