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Scrat [10]
3 years ago
10

1. Find the circumference radius of 14 a. Give an exact answer in terms of . (1 point) b. Use ≈ 22/7 and express your answer as

a fraction in lowest terms. (1 point) c. Use h button on your calculator, and express your answer to the nearest hundredth. (1 point)
Mathematics
1 answer:
jek_recluse [69]3 years ago
8 0

Answer:idk

Step-by-step explanation:

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8x + 12<br> Can someone please factorise this
ivanzaharov [21]

Answer:

4(2x + 3)

Step-by-step explanation:

Given

8x + 12 ← factor out the common factor of 4 from both terms

= 4(2x + 3)

3 0
3 years ago
Jessica lived in spain and colombia for a total of 18 months in order to learn spanish. She learned an average of 160 words per
Artyom0805 [142]

Answer:

Jessica spent 10 months in Spain and 8 months in Colombia.

Step-by-step explanation:

Let x be the number of months Jessica lived in Spain, then she lived 18 - x months in Colombia.

She learned an average of 160 words per month when she lived in Spain, so she learned 160x words in Spain.

She learned an average of 200 words per month when she lived in Colombia, so she learned 200(18-x) words in Colombia.

In total, she learned a total of 3,200 new words, thus

160x+200(18-x)=3,200\\ \\160x+3,600-200x=3,200\\ \\160x-200x=3,200-3,600\\ \\-40x=-400\\ \\x=10

Jessica spent 10 months in Spain and 8 months in Colombia.

5 0
3 years ago
F(x)=x^2-x-1 What is the average rate of change of f over the interval -1&lt;=x&lt;=1
nalin [4]
In calculus, we use derivatives to find the instantaneous rate of change at any point on a graph. To find the average rate of change, we just find the slope of the secant line that intercepts two points on the graph.

We find slope with the following equation:

m =  \frac{y_1 - y_2}{x_1-x_2}

In this case, we are looking for the slope from x = -1 to x = 1. We have both x values, so next we need the y values.

F(-1) = (-1)^2 - (-1) - 1 = 1

F(1) = (1)^2 - (1) - 1 = -1

Now plug in the x and y values to find the slope:

\frac{1-(-1)}{-1-1} =-1

The answer is -1.
6 0
3 years ago
Alejandra heard that as a general rule, she should spend no more than one week's pay on rent. If Alejandra's pay is $34,000 per
ArbitrLikvidat [17]
$653.84 would be a week's salary if no taxes are figured into the equation

8 0
3 years ago
Read 2 more answers
8x+4y=-2<br> -12x+5y=-8<br> What is the answer
tester [92]

Answer:

x= 1/4 .....................

y=-1

7 0
2 years ago
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