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andrezito [222]
3 years ago
9

Which property justifies the following statement?

Mathematics
1 answer:
Lunna [17]3 years ago
4 0

Yo sup??

it's given that

x=4 any=3x

therefore by SUBSTITUTION PROPERTY OF EQUALITY we can say that

y=3*4

Hence the correct answer is option A

Hope this helps.

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If 3t - 7 = 5t, then 6t = <br> A. 21 <br> B. -7 <br> C. -21<br> D. -42
podryga [215]

Answer:

C. -21 is your answer

Step-by-step explanation:

Solve for t. Isolate the variable t in the first equation, then use the number gotten to solve the second equation.

3t - 7 = 5t

First, subtract 3t from both sides

3t (-3t) - 7 = 5t (-3t)

-7 = 5t - 3t

-7 = 2t

Isolate the variable (t). Divide 2 from both sides

(-7)/2 = (2t)/2

t = -7/2

t = -3.5

Plug in -3.5 for t in the second equation

6(t) =

6(-3.5) =

6(-3.5) = -21

C. -21 is your answer

~

6 0
3 years ago
Is 36/121 a perfect square
Romashka-Z-Leto [24]

Answer:

Step-by-step explanation:

Yes

7 0
3 years ago
Read 2 more answers
Please help me do this question​
weeeeeb [17]

Answer:

2/10

Step-by-step explanation:

Im pretty sure its 2/10

have a great day:)

6 0
3 years ago
Write a linear equation to model the following situation: Frankie has $500 in her savings account at the beginning of the year.
Juli2301 [7.4K]
A linear equation can be represented by: 

y = mx + b 

Where m = slope, and b = y intercept. 

The slope is a rate of change, so our slope is $150. 
The y intercept is the point where the equation crosses the y axis, or the "initial amount" in this case $500. 

So our equation will be: 

y = 150x + 500. 
6 0
3 years ago
Who would you go about this.
Nostrana [21]
A. First move all to the left side of the equation(Normal form)

x^3 - 49x= 0

B. Factor out an x, which is the GCF (Factored form)

x(x^2 - 49) = 0

C. Find solutions by making each x piece equal to 0. The first part is just x=0 and the second part is just factoring the difference of squares and then solving.

x=0, x^2 - 49 =0

x=0, x + 7 = 0, x - 7 = 0

Therefore, the answers for Part C are:
x = 0, x = -7, x = 7
6 0
3 years ago
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