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Vikki [24]
3 years ago
15

Kira solved the equation in the following way. 7 2 − 2x = 11 2 7 2 − 7 2 − 2x = 11 2 − 7 2 −2x ÷ −2 = 4 2 ÷ − 2 x = −1 Describe

the properties of equality that Kira used. The first step is to use the property of equality to combine the constant terms. The second step is to use the property of equality to isolate the variable.
Mathematics
2 answers:
vladimir2022 [97]3 years ago
7 0

Answer:

the first step is to use the

✔ Subtraction

property of equality to combine the constant terms.

The second step is to use the

✔ Division

property of equality to isolate the variable

Step-by-step explanation:

edge 20 20

Nat2105 [25]3 years ago
3 0

Answer:

B D

Step-by-step explanation:

just trust

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Is this statement true or false? You calculate a finance charge by subtracting the cost of the purchase from the total payment,​
zalisa [80]

Answer:

True

Step-by-step explanation:

Brainliest?

7 0
3 years ago
Read 2 more answers
If RT = 6 and RS = 9, then RX =<br> A - sqrt(54)<br> B - 13.5<br> C - 7.2<br> D - 4
wolverine [178]

Answer:

Option D RX=4 units

Step-by-step explanation:

we know that

<em>In the right triangle RTS</em>

The cosine of angle TRS is equal to

cos(TRS)=RT/RS

substitute

cos(TRS)=6/9 -----> equation A

<em>In the right triangle RTX</em>

The cosine of angle TRX is equal to

cos(TRX)=RX/RT

substitute

cos(TRX)=RX/6 -----> equation B

∠TRS=∠TRX -----> is the same angle

Match equation A and equation B

6/9=RX/6

RX=6*6/9=4 units

5 0
3 years ago
What is the slope of (15,9), (-14,-9)
Lady bird [3.3K]
The formula for slope:

m = \frac{y_{2} - y_1 }{x_2-x_1}

\frac{-9-9}{-14-15}

-9-9 = -18
-14-15 = -29

\frac{-18}{-29}

8 0
3 years ago
In a certain lottery game, 34 numbers are randomly mixed and 7 are selected. A person must pick all 7 numbers to win. Order is n
777dan777 [17]

Answer:

p(win)=0.00094

Step-by-step explanation:

-This is a factorial/combination question.

-The probability is calculated using the formula:

p=\frac{x!}{_nC_x}\\\\

Where:

x is the number of successful picks

n is the total number of picks

Therefore, we calculate the probability as follows;

Pp=\frac{x!}{_nC_x}\\\\=\frac{7!}{_{34}C_7}\\\\=0.00094

Hence, the probability of winning is 0.00094

6 0
3 years ago
For the simple harmonic motion equation d=2 sin (pi/3 t), what is the maximum displacement from the equilibrium position?. . . .
Pie
<span>Yes, it is.

Here's something to think about:
The function sin(x) is never bigger than 1, no matter what number you choose to plug into it. therefore the maximum value of the equation d= 2sin(x) is 2.

I hope my answer has come to your help. Thank you for posting your question here in Brainly.


</span>
5 0
3 years ago
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