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3 years ago

!!PLEASE ANSWER IMMEDIATELY!!

Mathematics

1 answer:

kenny6666 [7]3 years ago

4 0

Answer:

<E=<G=115°

since opposite angle of rhombus is equal

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Hi lol i don't need help with anything

Ivenika [448]

Answer:

hi...so...why did you asked like lol

7 0

4 years ago

Write the volume of a cube 25 cm on a side using an exponent. Then, find the volume.

kirill115 [55]

V = 25^3

Since a cube has equal lengths on each side, you multiply the 25 by itself three times to get:

V = 15,625cm^3

4 0

3 years ago

How are algebraic expressions evaluated using substitution?

Alinara [238K]

Answer:

if you mean like you have a algebraic expression and they give you the values of the variables to substitute into the equation, then you just replace the variable with the value for instance

if x = 5

in the equation x + 3 =

then we would replace x with 5 and get 5 + 3 = 8

Step-by-step explanation:

4 0

3 years ago

HELP PLEASEEEEEEEEEEEEEEEEEEEEEEEEE

umka21 [38]

Answer:

The solution set to the absolute value is:

$S = \{x \in \mathbb{R}| x \ge 0\}$ or $S = [0, +\infty)$

Negative real numbers are not included in the solution set, as for $x < 0$ , $|x| = - x$ .

Step-by-step explanation:

From Mathematics, we know that absolute values are defined by the following characteristics:

1) For $x \ge 0$ , $|x| = x$

2) For $x < 0$ , $|x| = - x$

Then, if $|x| = x$ , then the solution set to the absolute value is:

$S = \{x \in \mathbb{R}| x \ge 0\}$ or $S = [0, +\infty)$

Negative real numbers are not included in the solution set, as for $x < 0$ , $|x| = - x$ .

3 0

3 years ago

ritu can row downstream 20km in 2 hrs and upstream 4km in 2 hrs. find the speed of rowing in still water and the speed of the cu

Marina CMI [18]

Answer:

Speed of boat in still water is 6km/h

Speed of current is 4km/h

Step-by-step explanation:

We know speed = distance / time

Let the speed of boat in still water be x

Let the speed of current be y

Hence the speed of boat, down stream = $x+y$

Distance downstream = 20km

Time taken = 2 hours

We have

$x+y=\frac{20}{2}$

$x+y=10$ ......(1)

Speed of boat upstream = $x-y$

Distance upstream = 4

Time taken = 2

We have

$x-y=\frac{4}{2}$

$x-y=2$ ...(2)

Adding (1) & (2)

$2x=12$

$x=6$

Substituting in (1) we get

$y=4$

7 0

3 years ago