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2 years ago

Find the value of each variable and show which property is used.

Mathematics

1 answer:

mojhsa [17]2 years ago

6 0

7y-2=5y+4
+2 +2
__________
7y= 5y + 6
-5y -5y
__________
2y= 6

Y=3

3x+2=23
3x =21
x= 7

7(3) -2= 5(3)+4
19=19
x=19

3(7)+2=23
23= 23
Y=23

Adding and subtracting property

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Evaluate. 102+6⋅7+8 70142150190

Aloiza [94]

Hi.

102+6(7)+8 (your equation)
102+ 42+ 8 (since the order is PEMDAS, multiplication has to go first. 6x7=42
144 + 8 (since you go left to right, 102 +42 has to be 1st. Answer= 144)
152 (now the only thing left is 144 + 8, so do that. Answer= 152.)

Since that's the last step, 152 will be your answer.

Hoped I helped and if you need anymore you could always ask me~

-Dawn

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2 years ago

Read 2 more answers

A.Give the function,find each value 1.Let k(x)=2x²-4x+6, a.find k(-2), and b.find k(2)

gizmo_the_mogwai [7]

It is quite simple answer is this

1. 5
2. -6+4
3.13

3 0

2 years ago

When is a rhombus a rectangle?

Vladimir [108]

Answer:

D. When its angles are right angles.

Step-by-step explanation:

A rhombus can be a rectangle when its angles are right angles.

7 0

3 years ago

Read 2 more answers

A sandbag is released from a hot air balloon that is 400ft above the ground. Using the falling object model, h = –16t2 + s, wher

Aleonysh [2.5K]

Answer:

It takes 5 seconds for the sandbag to hit the ground

Explanation:

Given:

Height at which the sand bag is released from the hot air balloon $= -400 f t$

To find:

Time taken for the sandbag to hit the ground, t =?

Solution:

The initial height =s

Initially the height will be 0

Hence $s=0$

the falling object model equation

$h=-16 t^{2}+s$

Substituting the values we get,

$h=-16 t^{2}+s$

$400=16 t^{2}$

$t^{2}=\frac{400}{16}$

$t^{2}=25$

$t=\sqrt{25}$

$t=5 \text { seconds }$

Result:

Thus it takes 5 seconds for the sandbag to hit the ground

3 0

3 years ago

A box has three cards numbered 1, 2, and 3

Igoryamba

Answer:

{1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C}

{1C, 2C, 3C}

Step-by-step explanation:

First is all possibilities. Let's do it one step at a time. The first step is the number, what are all the numbers that can be chosen? 1 2 and 3. then, when you pick1, what are all the letters that can be chosen? A B and C. Do this for 2 and 3 and you get all possibilities.

{1A, 1B, 1C, 2A, 2B, 2C, 3A, 3B, 3C}

When you have steps like this you can multiply the number of results to get the total number of possibilities as well. Step one has 3 results, step 2 has 3 results, that means there are 3*3 total, which is 9. Do be careful it matches this kind of setup, where the step 2 is the same for all step 1s. So if instead if you got 1 for step 1 you picked from a bag with 3 things, then for 2 you picked from a different bag with a different number, that multiplication trick wouldn't work.

Now just pick throught he sample space to find all with C. There are three, {1C, 2C, 3C}

7 0

3 years ago