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2 years ago

The circle shown has a radius of 4 cm.

Mathematics

1 answer:

Vesna [10]2 years ago

7 0

Answer:

8 cm

Step-by-step explanation:

4+4=8 To get the diameter, double the radius and add them together.

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Find the slope of the line passing through points A(-5,-3) and B(2,3).

Over [174]

Answer:

3/5

Step-by-step explanation:

(3-(-3))/(-3-(-5)) = 6/10 = 3/5

8 0

2 years ago

How to solve fractions

777dan777 [17]

Well it depends...... (.5= 1/2)

4 0

2 years ago

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Solving 8 problems per minute, Fast Finn can finish his test in time. He was however, working faster, solving 10 problems per mi

mrs_skeptik [129]

Answer:

Number of problems = 240

Step-by-step explanation:

Let x be the number of questions and t be the time.

Given:

Average rate = 8 problems per minute

Fast Finn rate = 10 problems per minute

Fast Finn taken time = t - 6

We need to find the number of problems on the test paper.

Solution:

Average rate to solve test paper.

$Average\ rate =\frac{Number\ of\ questions}{time}$

$8 =\frac{x}{t}$

$t =\frac{x}{8}$ --------------(1)

Fast Finn rate to solve the test paper.

$Average\ rate =\frac{Number\ of\ questions}{time}$

$10 =\frac{x}{t-6}$

Using cross multiplication rule.

$x=10(t-6)$

$x=10t-60$

substitute $t =\frac{x}{8}$ from equation 1.

$x=10(\frac{x}{8}) -60$

Rearrange the equation as:

$x - \frac{5}{4}x = -60$

$\frac{4x-5x}{4}=-60$

$-\frac{x}{4} = -60$

Using cross multiplication rule.

$x = 60\times 4$

x = 240 problems.

Therefore, 240 problems were on the test.

4 0

2 years ago

There were approximately 1.6 * 10 pieces of mall processed by the United States Postal

mihalych1998 [28]

Answer:

x = 2.13 × 10^11

Approximately 2.13 × 10^11 mails were processed in 2006

Completed question;

There were approximately 1.6 * 10^11 pieces of mall processed by the United States Postal

Service in 2012. This is about 75% of the number of pieces of mail processed in 2006.

Approximately how many pieces of mail were processed by the United States Postal Service in

2006

Step-by-step explanation:

Let x represent the number of mails processed in year 2006

Given;

Number of mails processed in 2012 N = 1.6 × 10^11

Number of mails processed in 2012 N is about 75% of the number of pieces of mail processed in 2006.

So;

N = 75% of x

N = 0.75x

x = N/0.75

x = (1.6 × 10^11)/0.75

x = 2.13 × 10^11

Approximately 2.13 × 10^11 mails were processed in 2006

3 0

2 years ago

Find the solution set. (x+7)(x+7)=0

levacccp [35]

For this case we must find the solution of the following expression:

$(x + 7) (x + 7) = 0$

If we isolate a term and we equate to zero, we have:

$x + 7 = 0$

Subtracting 7 on both sides of the equation we have:

$x + 7-7 = 0-7\\x = -7$

Thus, the solution of the expression is given by:

$x = -7$

ANswer:

$x = -7$

7 0

2 years ago

Read 2 more answers