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2 years ago

How do you add parentheses to 9 + 12 / 3 + 4 / 2 + 1 * 2 to make the answer 12? Please help quick.

Mathematics

1 answer:

morpeh [17]2 years ago

4 0

Answer:

so the final answer is =17

Step-by-step explanation:

9+12/3=13+4/2=2+1*2=2 the answer is 13+2+2=17

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How many sides does a polygon have if the sum of the interior angles is 900

sammy [17]

Answer:

there are 7 sides.

Step-by-step explanation:

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3 0

2 years ago

Using the completing-the-square method, rewrite f(x) = x2 + 10x + 7 in vertex form

mr Goodwill [35]

Answer:

f(x) = (x - (-5))^2 + (-18)

Step-by-step explanation:

Given:

f(x) = x^2 + 10x + 7

Rewrite f(x) in vertex form

Solution:

f(x) = ax^2 + bx + c is a quadratic function.

The vertex form of f(x) is a(x - h)^2 + k, where (h, k) is the vertex.

=> f(x) = x^2 + 10x + 7

= x^2 + 10x + 25 - 18

= (x + 5)^ - 18

= (x - (-5))^2 + (-18)

=> f(x) can be rewritten in form of a(x - h)^2 + k, where (h, k) is the vertex, with a = 1, h = -5, k = -18

6 0

3 years ago

A newspaper article states that 90% of drivers in Iowa wear their seatbelt. Suppose we are interested in estimating the proporti

konstantin123 [22]

Answer:

The sample size is $n = 3457$

Step-by-step explanation:

From the we are told that

The population proportion is p = 0.90

The margin of error is E = 0.01

From the question we are told the confidence level is 95% , hence the level of significance is

$\alpha = (100 - 95 ) \%$

=> $\alpha = 0.05$

Generally the sample size is mathematically represented as

$n =[ \frac{ Z_{\frac{\alpha }{2} } }{E} ]^2 * p(1-p)$

=> $n =[ \frac{ 1.96 }{0.01} ]^2 * 0.90(1-0.90)$

=> $n = 3457$

8 0

3 years ago

Find the 50th term of the sequence 5, –2, –9, –16, ...

Alecsey [184]

The correct answer: -338

5 0

3 years ago

Read 2 more answers

Please help!!!!!!!!!!!!!!

Digiron [165]

C)
the answer should be 24a^-1b^10

5 0

3 years ago