Mathematics High School

9th October 2020
Assignment
1. The perimeter of a bectangular plot of land whose length
is (2x+5)m and width (x-10)m is 80m
find the value of ×​

Answers

Answer 1

Answer: x = 15

Step-by-step explanation:

The perimeter is the sum of the 2 lengths and 2 widths.

Step 1: 2 times the length is 4x + 10

Step 2: 2 times the width is 2x - 20

Step 3: Add the both results together.

6x - 10

Step 4: Create an algebraic equation.

6x - 10 = 80

Step 5: Solve for x.

6x = 90

6x/6 = 90/6

x = 15

Related Questions

I need help with this question

Answers

part a:
this is really just intuition. you can go either way as long as you back up what you say.
either you think hunter would be faster because he starts out with a lot more money, or you think amado would be faster because he earns a lot more.

part b:
let x be the number of hours hunter works, and y the number that amado works.
they both need to earn 600 dollars.

hunter's money is modelled by 150 + 7.5x
to get 600 dollars
150 + 7.5x = 600
7.5x = 450
x = 60

amado's money is modelled by 12y
to get 600 dollars
12y = 600
y = 50

hunter would need to work 60 hours to make enough money, but amado would only need to work 50, so hunter will take longer.

then say whether this agrees with what you guessed in part a

which is the value of this expresson when a=5 and k=-2 ​

Answers

25/9 aka the third option

You have calculated that a serving of cake is about 50 cubic inches in size. If a customer comes in and wants to buy a cake that serves 10-12 people, which cake mold would you recommend that they purchase?

Answers

The cake mold I would recommend to a customer that wants to  buy a cake that serves 10-12 people is the 600 cubic inches size.

What does multiplication mean?

Multiplication is the process of determining the product of a set of numbers by carrying out a specialised mathematical operation. The sign that denotes multiplication is x.

Which cake mold should be bought?

The cake mold to be bought can be determined by multiplying the mold per serving by the maximum number of people the customer wants to serve.

12 x 50 = 600

To learn more about multiplication, please check: https://brainly.com/question/3385014

Help!!!! Please will be brainiest and get thanks + 5 stars!!

Answers

Answer:

X = 90°

Y = 45°

Z = 45°

Step-by-step explanation:

[tex] \frac{1}{2} ( \frac{90}{1} )[/tex]

[tex] \frac{90}{2} [/tex]

[tex]45[/tex]

Which translation rule describes the translation that is 6 units to the right and 5 units down? A. (x, y) → (x + 6, y – 5) B. (x, y) → (x – 6, y – 5) C. (x, y) → (x + 6, y + 5) D. (x, y) → (x – 6, y + 5)

Answers

Answer: A

Step-by-step explanation:

You need to add 6 to the x coordinate and subtract 5 from the y coordinate.

Answer:

The answer would be (x + 6, y - 5)

Step-by-step explanation:

6 units to the right is +

6 units to the left is   -

5 units to the up is +

5 units to the down is -

B. Find the area of the triangle formed by joining the mid points of the sides of a triangle
whose vertice sre(0, - 1), (2, 1) and (0,3). Find the ratio of this area to the area of the
given triangle

Answers

Answer:

2.1

Step-by-step explanation:

PLEASE HELP THERE PICTURES i will choose brainliest answer

Answers

Answer:

question 3= C.

question 2= A.

question 1= seventy-two minus twelve, times less than 24 equals?

Step-by-step explanation:

smort mr clean 0-0

Question 3 is c, 3x+6 is less than or equal to 96, Question 2 is a, it says less than in the word problem,

Evaluate x-(x-y3)); use x=9 and y=1

Answers

Answer:

-15

Step-by-step explanation:

9-(9-1*3)

9-8*3

9-24

-15

Your answer would be 3

Find the area of a kite with diagonals 12 ft and 3 ft.

Answers

Answer:

36 because 12 times 3 =36

Step-by-step explanation:

12 time 3 is 36

At Treetop Middle School, 60% of the students are BOYS. If there are 2400 students, how many students are GIRLS? {Please help a sista out :0}

Answers

Answer:

1440 girls

Step-by-step explanation:

Dis for a test don’t mess me up.

Answers

Answer:

the answer is 8

Step-by-step explanation:

When Jocelyn runs the 400 meter dash, her finishing times are normally distributed with a mean of 61 seconds and a standard deviation of 2 seconds. Using the empirical rule, what percentage of races will her finishing time be between 57 and 65 seconds?

Answers

Answer:

95% of races will her finishing time be between 57 and 65 seconds.

Step-by-step explanation:

Mean=61 seconds

Standard deviation =2

Empirical rule says,

68% of data covered between mean±1 standard deviation

95% of data covered between mean ±2 standard deviation

99.7% of data covered between mean ± 3 standard deviation.

I'll upload the Empirical rule curve.

Because 57 is 61-2(2) and 65 is 61+2(2), so, 95% of data covered.

So, according to Empirical rule, 95% of races will her finishing time.

Which value for y makes the equation y - 2.5 = 1.95 true? A. y = 0.78 B. y = 4.875 c. y = 48.75 D. y = 4,875​

Answers

Answer: B is the answer

Step-by-step explanation:

The area of a garden is measured in:
1.grams
2.square centimetres
3.square metres

Answers

it's answer is square metre because SI unit of area is square and in most of the case area of garden is given as metre

!!!PLEASE HELP!!! ASAP

Answers

Answer:

Pretty sure it's 3.5 because...

Step-by-step explanation:

7 ÷ 2 = 3.5

Find the solution of x.

Answers

Answer:

  c.  29°

Step-by-step explanation:

The measure of the inscribed angle x is half the measure of subtended arc BC.

  x = 58°/2 = 29°

Constance wrote a total of 10 pages over 5 hours.

How many hours will Constance have to spend writing this week in order to have written a total of 20 pages?

Answers

Step-by-step explanation:

10 pages in 5 hours.

our focus is on pages (how long for 20 pages).

so, if we don't see the ratio right away, let's norm the original relationship to 1 page :

10 pages in 5 hours

so,

1 page in 5/10 = 0.5 hours = 1/2 hours

and now : how long for 20 pages ?

1 × 20 pages in 1/2 × 20 hours

20 pages in 10 hours.

formally, we are dealing with a ratio, which is a fraction :

10 pages in 5 hours = 10/5

to keep the value of the fraction, in order to change one of the 2 values to a target value (like 10 pages to 20 pages in our case), we need to multiply the other with the same factor :

10/5 × 2/2 = 20/10

so, again, this tells us 20 pages in 10 hours.

Which property gives plasma a high electrical conductivity?
O A.
low density of particles
B. repeating crystal structure
Ос.
diverse chemical composition
D. presence of charged particles

Answers

Answer:

D. Presence of charged particles

Step-by-step explanation:

Plasma consists of a medium of gas that has about the same amount of particles that are positively and negatively charged formed due to the ionization of the gaseous atoms forming ions that have ejected some orbital electrons as well as electrons that move in the same manner as gaseous particles within the medium.

AAAAA I NEED HELP AGAIN!!

Answers

Answer:

x=1

Explanation:

it is x=1 because if the point (-1,3) is reflected then the other point is (3,3) and so on

find area of irregular figure ​

Answers

Answer:

164 square meters.

Step-by-step explanation:

This is a 12x15 rectangle minus the small rectangle near the bottom.

The small rectangle has dimensions (12-5-5) * 8.

Therefore, our answer is 12*15 - 2*8 = 164 square meters.

x to the 2nd power =64

Answers

Answer:

8

Step-by-step explanation:

8 *8=64

Answer:

X=8

Step-by-step explanation:

1. Just find the square root of 64, it is 8

2. why? because finding the square root is the opposite of using the 2nd power.

3. you got the answer, it is 8

you can confirm it by using the 2nd power on 8

Help my math teacher created thistest and I don’t know how to do any of this

Answers

Answer:

B

Step-by-step explanation:

If you’re looking for the intersection it’s B.

Solve each equation by factoring.
1) a^2- 9a + 14 = 0


Answers

it’s c [7,2] for sure! :)

1) A number is drawn at random from the set (1, 2, 3, 4, and 5) and a letter is drawn at random from the word COBRA. How many possible outcomes are there for this experiment? Find the probability that​

Answers

Answer:

Step-by-step explanation:

There are 5 numbers. You are going to draw 1 number.

There are 5 letters -- all different. You are going to draw 1 of them

The number of outcomes = 5 * 5 = 25

Help ASAP with find slope of line

Answers

Hi!

The equation of the line is written in slope-intercept form (y=mx+b) where m stands for the slope.

In order to find the slope of the given line, let's just take a look at our equation.

Hint: what is the coefficient of x?

That's right, 5/4

Hence, the answer is

[tex]\boxed{\boxed{\bold{\frac{5}{4}}}}[/tex]

Hope everything is clear.

Let me know if you have any other questions; if so, please feel free to ask.

#LearningDoesn'tEnd

#LearningIsFun

[tex]\rule{200}{2}}[/tex]

Answer:

a.5/4

Step-by-step explanation:

y equals mx plus c, where m is the gradient(slope of line) & c is the constant

∴y equals (5/4)x-5,where 5/4 represents the "m" & -5 is the constant.

Therefore,5/4 is "m" which is the slope(gradient).

Find the area
17m
8m
15n

Answers

Answer:

[tex]60 \ \text{m}^{2}[/tex]

Step-by-step explanation:

We are given the base, which is 15 meters. When we increase the base, we will obtain the height, which is 8 meters. Now, let's substitute the base and the height in the formula to find the area of the triangle.

[tex]\rightarrow \dfrac{1}{2} \times 15 \times 8[/tex]

[tex]\rightarrow 15 \times 4[/tex]

[tex]\rightarrow 60 \ \text{m}^{2}[/tex]

Thus, the area of the triangle is [tex]\bold{60 \ \text{m}^{2}}[/tex].

Ms. Rios wants to share $1 equally among 6 students. What fraction of a dollar will each student get?

Answers

Answer:

17 cents

Step-by-step explanation:

Firstly, as we know this is going to become a fraction, we can replace $1 with $1.00.We are trying to divide $1.00 amongst 6 people. This is a division problem, and will look like 1.00 ÷ 6.We get .166... which we can round to 17 cents, or .17.

If I am incorrect in my reasoning, please let me know so that I can plan better for my future answers. Have an amazing day.

What is theSquare root of 4

Answers

The square root of 4 is 2 because 2x2=4

Estimate the solution of system equation
y = -2x-5
y = 2x-2

Answers

Answer:

(-3/4,-7/2)

Step-by-step explanation:

In the figure below, line M is parallel to line N.

What is the value of y
A 16

B 48

C 64

D 132

Answers

The answer for this question might be B I’m not totally sure tho. Sorry if it’s wrong.
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