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3 years ago

Please help me solve this step by step please!!

Mathematics

2 answers:

kupik [55]3 years ago

5 0

Answer:

0.143

Step-by-step explanation:

7 / 7³ x 7 Start with the exponents first

7 / 343 x 7 Divide 7/343

0.02 x 7 Multiply 0.02 x 7

0.143

qaws [65]3 years ago

4 0

Answer:

7^(1-3+1) = 7^-3

Step-by-step explanation:

Here is the rule you should know: when multiplying powers of the same base you add the exponents ans when dividing powers of the same base you subtract the exponents.

Also, if there is no number at the exponent, it is 1.

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Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the dif

rodikova [14]

Answer:

60men 40 women.... but I ain't sure

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3 years ago

What is the missing circle sequence number 10,40,?,80,40,20

soldier1979 [14.2K]

80 because it should be the same as the other one

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3 years ago

The second term in a geometric sequence is 20. The fourth term in the same sequence is 45/4 or 11.25. What is the common ratio i

kati45 [8]

$\bf \begin{array}{ccll}
n&term&value\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
2&a_2&20\\
3&a_3&20r\\
4&a_4&20rr\\
&&20r^2\\\\
&&\frac{45}{4}
\end{array}\implies \stackrel{4^{th}~term}{20r^2=\cfrac{45}{4}}\implies r^2=\cfrac{45}{80}
\\\\\\
r^2=\stackrel{simplified}{\cfrac{9}{16}}\implies r=\sqrt{\cfrac{9}{16}}\implies r=\cfrac{\sqrt{9}}{\sqrt{16}}\implies r=\cfrac{3}{4}$

4 0

2 years ago

In a class. 40% of the student's study math and science, 60% of the students study

GaryK [48]

Answer:

2/3

Step-by-step explanation:

A = Student studying Math

B = Student studying Science

P(B|A) = P(A and B) ÷ P(A).

P(B|A) means the probability of event B given event A.

Given :

P(A and B) = 0.40.

Also P(A) = 0.60.

P(B|A) = 0.40 ÷ 0.60 = 2 ÷ 3.

So, the answer is 2/3.

8 0

2 years ago

A parallelogram has an area of x^2 + 9x - 36.

posledela

Answer:

The least value is 1

Step-by-step explanation:

Area of a Parellelogram = Base x Height

6 0

2 years ago