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galina1969 [7]
3 years ago
15

Evaluate the expression for x = 2, y = -3, and z = -5. * 2x + 3y + z Your answer

Mathematics
2 answers:
Lunna [17]3 years ago
6 0
Plug in

2(2) + 3(-3) + (-5)
4 + (-9) + (-5)
4 + (-14)
-10

Answer is -10
2x + 3y + z = -10
algol133 years ago
6 0

Answer:

-10

Step-by-step explanation:

replace each letter with each number given, like shown below.

2(2)+3(-3)+(-5)

= 4+-9+-5

= -5+-5

= -10

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NEED HELP ASAP PLEASE!! The provided diagram of triangle ABC will help you to prove that the base angles of an isosceles triangl
Lunna [17]

Answer: The proof is mentioned below.

Step-by-step explanation:

Here, Δ ABC is isosceles triangle.

Therefore, AB = BC

Prove: Δ ABO ≅ Δ ACO

In Δ ABO and Δ ACO,

∠ BAO ≅ ∠ CAO  ( AO bisects ∠ BAC )

∠ AOB ≅ ∠ AOC ( AO is perpendicular to BC )

BO ≅ OC ( O is the mid point of BC)

Thus, By ASA postulate of congruence,

Δ ABO ≅ Δ ACO

Therefore, By CPCTC,

∠B ≅ ∠ C

Where ∠ B and ∠ C are the base angles of Δ ABC.


7 0
3 years ago
A jar holds no more than 500 buttons. If 5 people bring 330 buttons each, how many jars are necessary to hold all of the buttons
Strike441 [17]

Answer:

We know

1 jar = 500 buttons

5 people bring 330 buttons EACH

We can find/solve by...

people x buttons = total buttons

total buttons / 500 = number of jars needed

So..

5 x 330 = 1650

1650 / 500 = 3.3

Your answer:

4 jars

Explanation

It's impossible to have 3.3 jars, so you must round up.

Step-by-step explanation:

8 0
3 years ago
Compare and contrast subtracting integers and subtracting whole numbers
Galina-37 [17]

Subtracting whole numbers does not include subtracting negative numbers, whereas when subtracting integers you can include negative numbers.

6 0
3 years ago
Given the equation 5 + x - 12 = x- 7.
marusya05 [52]

Answer:

Step-by-step explanation:

5 + x - 12 = x- 7 (Add the 5 and -12 to simplify)

x - 7 = x - 7        (notice its the same on both sides of equal sign. Add 7 to both                    sides)

x = x

solution is all real numbers

Part B

5 - 4 - 12 = -4 - 7

-11 = -11

5 + 0 - 12 = 0 - 7

-7 = -7

5 + 5 - 12 = 5 - 7

-2 = -2

8 0
3 years ago
-x-6y=10 x-2y=-2 using elimination?
Lana71 [14]
Answer: x = -4, y = 1

4 0
3 years ago
Read 2 more answers
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