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Yuliya22 [10]
3 years ago
12

PLEASE HELP!!!!! BRAINLIEST!! I will give brainliest if you answer, I will also give brainliest ON ALL QUESTIONS!! if you go to

my page help with my other Questions!!!
Use this list of properties to justify each step of your math work. Justifications may be used more than once if needed. (5 points)
Distributive Property
Subtraction Property of Equality
Combine Like Terms
Multiplication Property of Equality
Division Property of Equality
Given
Addition Property of Equality

7x + 3x : 18 = 6(x + 3)
7x + 3x - 18 = 6x +18
10x - 6x = 18 + 18
4x = 36
x= 36/4
X= 9
Mathematics
1 answer:
Hunter-Best [27]3 years ago
4 0

Answer:

Destributive

Combine Like Terms

Addition Property of Equality and Subtraction Property of Equality

Combine Like Terms

Division Property of Equality

(I'm assuming the ":" in the first equation is a typo)

Step-by-step explanation:

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What is 2/5 divided by 4/3
Andrej [43]

Answer:

0.5333

Step-by-step explanation:

\frac{2}{5}  \div  \frac{4}{3}  \\   \\  \frac{2 \times 4}{5\times 3}  =  \frac{8}{15} \\   \\  \frac{8}{15}  = 0.5333

Please mark 2 brainliests because I need.

3 0
2 years ago
PLEASE HELP!!!! a bag holds 25 potatoes, if the potatoes in the bag are split among 5 people, how many people does each person g
Airida [17]

Answer:

25 potatoes split between 5 people would be 25÷5=5. So each person will get 5 potatoes.

6 0
3 years ago
Read 2 more answers
Math scores on the SAT exam are normally distributed with a mean of 514 and a standard deviation of 118. If a recent test-taker
LuckyWell [14K]

Answer:

Probability that the student scored between 455 and 573 on the exam is 0.38292.

Step-by-step explanation:

We are given that Math scores on the SAT exam are normally distributed with a mean of 514 and a standard deviation of 118.

<u><em>Let X = Math scores on the SAT exam</em></u>

So, X ~ Normal(\mu=514,\sigma^{2} =118^{2})

The z score probability distribution for normal distribution is given by;

                              Z  =  \frac{X-\mu}{\sigma} ~  N(0,1)

where, \mu = population mean score = 514

           \sigma = standard deviation = 118

Now, the probability that the student scored between 455 and 573 on the exam is given by = P(455 < X < 573)

       P(455 < X < 573) = P(X < 573) - P(X \leq 455)

       P(X < 573) = P( \frac{X-\mu}{\sigma} < \frac{573-514}{118} ) = P(Z < 0.50) = 0.69146

       P(X \leq 2.9) = P( \frac{X-\mu}{\sigma} \leq \frac{455-514}{118} ) = P(Z \leq -0.50) = 1 - P(Z < 0.50)

                                                         = 1 - 0.69146 = 0.30854

<em>The above probability is calculated by looking at the value of x = 0.50 in the z table which has an area of 0.69146.</em>

Therefore, P(455 < X < 573) = 0.69146 - 0.30854 = <u>0.38292</u>

Hence, probability that the student scored between 455 and 573 on the exam is 0.38292.

7 0
3 years ago
Hay dos números. La suma de ellos es 13 y la suma de los cuadrados es
AleksandrR [38]

Answer:

7 ; 6

Step-by-step explanation:

7 0
3 years ago
Plz help me with this !!
Lubov Fominskaja [6]

Answer:

u have to use the almighty formula

7 0
3 years ago
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