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riadik2000 [5.3K]
3 years ago
7

What did the friend do wrong in this equation?

Mathematics
1 answer:
rjkz [21]3 years ago
4 0

Answer:

4x + 2x = 90 NOT 180.

Step-by-step explanation:

x = 15 is the correct answer.

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Fill in the blanks to complete the equation: 1 3/5= blank+3/5​
Galina-37 [17]

The answer is..

1 3/5=1+3/5    

5 0
3 years ago
Perform the following calculation. Express your answer in scientific notation. (2×105) + (6×105) Write your answer in scientific
ZanzabumX [31]
Answer:

8.4x10^1
Thanks
7 0
3 years ago
Read 2 more answers
Someone PLEASE help me!!!!!<br> Evaluate -/3/
Veseljchak [2.6K]

if / means absolute value, then the answer is -3. The absolute value of 3 is 3, then you take the negative value of it, which is -3.


Btw, the absolute sign is ||, not //.


5 0
3 years ago
A survey shows that 10% of the population is victimized by property crime each year. A random sample of 527 older citizens (65 y
jekas [21]

Answer:

The data provide sufficient evidence that older people are more likely to be victimized.

Step-by-step explanation:

H 0 : P = 0.10

H 1 : P > 0.10 (Right tailed test)

n = 527, P = 0.1235

The test statistics

x = P - p / \sqrt{p*(1-p) / n}

x = 0.1235 - 0.10 / \sqrt{0.10 * 0.90 / 527}

x = 0.0235 / \sqrt{0.09 / 527}

x = 0.0235 / \sqrt{0.00017077798}

x = 0.0235 / 0.0130682049264618

x = 1.798257689731729

x = 1.798

P value = [1 - p(Z > 1.7980] (Right tailed test)

P value = 0.036089

The P - Value is very small, so <u>reject H0</u>

Conclusion: The data provide sufficient evidence that older people are more likely to be victimized.

7 0
3 years ago
Solve the inequality:
steposvetlana [31]

Answer:

x >_ 1

Step-by-step explanation:

Solving an inequality is a lot like solving an equation. Just pretend the inequality symbol is an equal sign!

(also i wont be using the _ or equal to symbol because I'm too lazy, so you'll get >_ or <_ for those, sorry)

8 + 4x >_ 12

-8             -8

4x >_ 4

/4       /4

x >_ 1

6 0
3 years ago
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