MATHEMATICS HIGH SCHOOL

4. A rectangle measures 20cm by 15cm If each dimension is increased by 2.5cm by what percentage is a) The perimeter of the rectangle increased b) The area of the rectangle is increased​

Answers

Answer 1
Answer:

Answer:

The area of the rectangle is increased by 393.75.

Step-by-step explanation:

Add 2.5 to each number then multiply the sums. Please note I am actually in 7th grade.

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Line AB has a length of 5 cm. The line segment is dilated to produce line A'B', which has a length of 2 cm. Find the scale factor of the dilation. A. k = 2/5
B. k = 1/2
C. k = 5/2
D. k = 2

Thank you in advance for your help!

Answers

Answer:

Option A is correct

k = 2/5

Step-by-step explanation:

The rule of dilation with scale factor k is given by:

k = \frac{\text{Image length}}{\text{original length}}

As per the statement:

Line AB has a length of 5 cm. The line segment is dilated to produce line A'B', which has a length of 2 cm.

⇒original Length (AB)= 5 cm

and

Image length (A'B') = 2 cm

Apply the rule of dilation we have;

k = \frac{\text{A'B'}}{\text{AB}}

Substitute the given values;

k = (2)/(5)

Therefore, the scale factor of the dilation is, 2/5
The correct answer is A. k = 2/5

CAN SOMEONE JUST PLEASE ANSWER THIS ASAP FOR BRAINLIEST!!!!

Answers

The window is -20 to 20 on all axes
The vertex is 2,16
Answer: The ball hit the ground 6 seconds after Amir threw it.

0=-(x-2)^2 16
(x-2)^2=16
x-2=16 square rooted
x-2=4
x=6

2. You spin a spinner that has eight equal-sized sections numbered one to eight. Which event isleast likely to occur?
The number is even.
The number is less than three.
The number is greater than three.
The number is a multiple of five.

Answers

Answer:

Getting a multiple of 5 is the least likely outcome.

Step-by-step explanation:

We spin a spinner that has 8 equal-sized sections numbered 1 - 8.

We have to find which is the least likely to occur.

The number is even when outcomes are 2,4,6 or 8.

Number of outcomes = 4

If the number is less than 3, the number of possible outcomes are 2 that is 1 and 2.

If the number is greater than 3 , number of possible outcomes is 5 which are 4,5,6,7 and 8.

If the number is a multiple of 5, only 1 outcome is there which is 5 itself.

Hence getting a multiple of 5 is the least likely outcome.

What is $40 with a 30% markup?

Answers

the answer is 52 because to solve this you have to multiply 30 percent or 0.30 * 40 which equals 12 dollars then you add the 12 dollars to your 40 dollars and you get 52 dollars now that is what i call markup

How many significant digits are there in the measurement 0.09584 kg?three
six
four
five

Answers

four as zeros don't count when you're figuring out significant figures

4.(01.03)
Suppose you are going to graph the data in the table below. What data should be represented on each axis, and what would be the appropriate increments? (2 points)

Reporting periods Sales
Jan.–Mar., 2010 $100,000
Apr.–Jun., 2010 $55,000
Jul.–Sep., 2010 $45,000
Oct.–Dec., 2010 $110,000
Jan.–Mar., 2011 $330,000
Apr.–Jun., 2011 $800,000
Jul.–Sep., 2011 $242,000
Oct.–Dec., 2011 $150,000



x-axis: time period in increments of 1 month; y-axis: sales in increments of $1,000

x-axis: sales in increments of $1,000; y-axis: time period in increments of 1 month

x-axis: time period in increments of 3 months; y-axis: sales in increments of $100,000

x-axis: sales in increments of $100,000; y-axis: time period in increments of 3 months

Answers

The x axis should be time periods and since the range of months is in 3 months, the increments should be every 3 months.

The y-axis should be the sales and since most of the amounts are in 6 digits, we use increments of $100,000.

Therefore, the answer is the 3rd options:
x-axis: time period in increments of 3 months; y-axis: sales in increments of $100,000
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