MATHEMATICS HIGH SCHOOL

a childrens book has dimensions 20cm by 24cm what scale factor should be used to make a enlarged version that has dimensions 25cm by 30cm

Answers

Answer 1
Answer: A scale factor of 1.25, also written as 1 1/4 should be used

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Which of the following is equivalent to 18- √25?
5i
18 – 5i
18 + 5i
23

Answers

In this complex number, assuming that the equation actually is 18- √-25, the real part is already simplified. However, the imaginary part can be simplified by taking out "i" from the root using the relation i = √-1. This is done below:

18 - √-25
18 - √(-1)(25)
18 - 5i

From the choices, the correct answer is 18 - 5i.

Answer:

The answer is B

Step-by-step explanation:

Guyyyy Please help I have no idea what the answer is

Answers

Answer:

Step-by-step explanation:

x = 90 - 54 = 36

Answer:

x = 36

Step-by-step explanation:

The sum of all the angles in a triangle is 180

Add the known angles together

54 + 90 = 144

then subtract 180 and 144 to find x

180 - 144 =36

Students from two age groups were surveyed to see how they travel to school. Here are the results:Below age 15—Walk or bike: 87; Bus: 60; Car: 18
Age 15 and above—Walk or bike: 65; Bus: 50; Car: 80

Which of the following is a correct two-way relative frequency table for the data?

Answers

Options:

A. Method of Travel to School

Walk/Bike Bus Car Row totals

Below age 15 87 60 18 165

Age 15 and above 65 50 80 195

Column totals 152 110 98 360

B. Method of Travel to School

Walk/Bike Bus Car Row totals

Below age 15 0.24 0.17 0.05 0.46

Age 15 and above 0.18 0.14 0.22 0.54

Column totals 0.42 0.31 0.27 1

C. Method of Travel to School

Walk/Bike Bus Car Row totals

Below age 15 0.52 0.36 0.11 1

Age 15 and above 0.33 0.26 0.41 1

Column totals 0.42 0.31 0.27 1

D. Method of Travel to School

Walk/Bike Bus Car Row totals

Below age 15 0.57 0.55 0.18 0.46

Age 15 and above 0.43 0.45 0.82 0.54

Column totals 1 1 1 1

The answer is option B as you can see this two way frequency table has the same data as in the question.

Hope this helps!

Answer:

The table representing the number of students by which mode of transport they travel is given as:

                              Walk or bike    Bus       Car     Row Total

Below age 15            87                    60        18           165

Age 15 and above   65                    50        80         195

Column Total            152                  110        98         360

We know that a relative frequency of an event is the ratio of frequency to the total number of trials.

i..e we divide each frequencies by 360 to obtain a two-way relative frequency.

Hence,the table is given as:

                              Walk or bike    Bus       Car     Row Total

Below age 15            0.24               0.17      0.05         0.46

Age 15 and above    0.18                0.14      0.22        0.54

Column Total             0.42               0.31     0.27          1                        

A circle has a radius of 11 inches and a central angle AOB that measures 45°. What is the area of sector AOB? Use 3.14 for pi and round your answer to the nearest tenth.a. 47.5 in2
b. 11.9 in2
c. 8.6 in2
d. 4.3 in2

Answers

the answer is A from what my teacher taught me

Answer:

47.461632987542

Step-by-step explanation:

My teacher told me it was this answer, don't know how.

Tim ate 5/7 of a cake . ket ate 7/11 of a cake. who ate more cake ? how much more?

Answers

5/7 simplifies to 0.714. 7/11 simplifies to 0.636. Therefore, Tim ate about 1.1224 times more cake than Ket.
tim ate more of the cake he ate 71% while ket ate 63%

The product of two numbers is 1856. The sum is ninety. What is the difference of these two numbers?a. 30
b. 28
c. 26
d. 24

Answers

Answer:  The correct options is

(c) 26.

Step-by-step explanation:  Given that the product of two numbers is 1856 and their sum is 90.

We are to find the difference of the two numbers.

Let x and y represents the given numbers.

Then, according to the given information, we have

xy=1856,\n\nx+y=90.

We will be using the following formula :

(a-b)^2=(a+b)^2-4ab.

We have, for x and y,

x-y\n\n=√((x+y)^2-4xy)\n\n=√(90^2-4*1856)\n\n=√(8100-7424)\n\n=√(676)\n\n=26.

Thus, the required difference of the two numbers is 26.

Options (c) is CORRECT.

Answer is 26:

58 x 32 is 1856

58 + 32 is 90

and 58 - 32 is 26!

hope it helped!
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