Help me help me lol please meh

Answer:

https://vietjack.com/giai-toan-lop-9/images/bai-38-trang-62-sgk-toan-9-tap-1-

Step-by-step explanation:

Vẽ đồ thị y = 2x (1):

   Cho x= 0 ⇒ y= 0 ta được O (0, 0)

   Cho x= 2 ⇒ y = 4 ta được điểm (2; 4)

- Vẽ đồ thị y = 0,5x (2):

   Cho x= 0 ⇒ y = 0 ta được O (0; 0)

   Cho x = 4 ⇒ y = 2 ta được điểm (4; 2)

- Vẽ đồ thị y = -x + 6 (3):

   Cho x = 0 ⇒ y = 6 được điểm (0; 6)

   Cho y = 0 ⇒ x = 6 được điểm (6; 0)

Để học tốt Toán 9 | Giải bài tập Toán 9

Answer:

Mary

Step-by-step explanation:

Mary paid less for one bracelet. Tell me if I was wrong!

Step-by-step explanation:

a) is really easy, right ?

the surface area consists of 6 rectangles (as you know, every die has 6 sides). they are 3 pairs of equally sized rectangles.

there are 2 rectangles 7×1, 2 rectangles 7×2, and 2 rectangles 2×1

SA = 2×7×1 + 2×7×2 + 2×2×1 = 14 + 28 + 4 = 46 in²

the volume is just length×width×height

V = 7×2×1 = 14 in³

b)

a little bit more difficult, but with a little trick just as easy.

the surface area consists of the 2 circle areas and the mantle "coating".

the area of a circle is pi×r².

we have to be careful as the given 10 ft is the diameter of these circles. the radius is half of it : 5 ft.

the area of the "mantle" we can calculate by imagining we simply slice it open with one straight line from top to bottom. and then we cut it off the two circles and put it flat on the table.

now we see it is just a rectangle. one side is 12ft. the other is the circumference of the previously attached circles.

circumference of a circle is 2×pi×r

so the surface area is 2×circle + (circumference circle)×12

SA = 2×pi×5² + (2×pi×5)×12 = 50pi + 120pi = 170pi =

≈ 534.07 ft²

the volume is one base area (circle) times height

V = pi×5²×12 = 300pi ≈ 942.48 ft³

Answer:

The answer is 410 5/8

Answer:

3

Step-by-step explanation:

12/4=3 per car

Answer: x+5/8 = 1 is the equation where x is the remaining coffee.

Step-by-step explanation:

he drank = 5/8

whole coffee = 1

so

let coffee remaining be x

1-5/8 = x

x+5/8 = 1

The required equation, for the remaining cup of coffee, is x = 1+(- 5/8).

To determine the addition equation of coffee remaining in the cup, for the condition Kelly bought a cup of coffee and drank 5/8 it.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
Let the coffee remaining in the cup be x,
Now, according to the question,
1 = x + 5/8
x = 1 - 5/8
For the addition equation,
x = 1 +(-5/8)

Thus, the required equation, for the remaining cup of coffee, is x = 1+(- 5/8).

Learn more about arithmetic here:

brainly.com/question/14753192

#SPJ2

Answer:

4

Step-by-step explanation:

they're the same triangle, but one is bigger. the 2,5 and 5 sides are equivalent, so with that we are able to know the big triangle is exactly 2x bigger. u multiply the 2 side (because it's equivalent to the x side) by 2 (bc the triangle is 2 times bigger) and you get 4 = x

Answer:

81

Step-by-step explanation:

it can be expressed as a product of two smaller numbers 9×9

Answer:

probably giving false information or something

Step-by-step explanation:

Answer:

Surface Area = 264π

Volume = 576π

Step-by-step explanation:

in the picture

Answer:

SA= 829.38 Inches² which is 829.38/3.14159 = 264π inch³

V = 110.43 inches³.   which is 110.43/ 3.14159 = 35.15π inch³

Step-by-step explanation:

To find the surface area of cylinder, we calculate two area of circle 2πr² and one area of rectangle 2πrh first, and then add them 2πr²+2πrh.

SA of a cylinder =2πrh+2πr², where π≈3.14159

Radius given is 12/2 = 6 inches

=  2 x π x 6 x 16 + 16  x π6 x 6 ≈ 829.3804 = 829.38 Inches²

Volume = h*π *r^2

V = 16 x π

= 110.43 inches³.

Answer:Integer Numbers?

Step-by-step explanation:

Answer: 30:12

Step-by-step explanation: 5x6= 30 and 2x6=12

Hope this helps!

Answer:

No, they are not.

Step-by-step explanation:

A ratio can be written as a fraction. So 3:5 is the same as 3/5 and 2:4 is the same as 2/4.

3/5 = 2/4

0.6 = 0.5 INCORRECT

As you can see, the both don't equal the same numbers, so they aren't equivalent.

Answer:

a) -99

b) -12

c) -105

d) -46

Answer:

a) | -81 - 17 | = 98

b) | 8 - 20 | = 12

c) | -76 - 25 | = 101

d) | -91 + 45 | = 46

Remember, absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Hope this helps! :)

Answer:

Silurian

Triassic

Jurassic

Tertiary

Step-by-step explanation:

i hope its right

Answer:

6) a) 69 b) 97 c)86 d)71

7) A.

Step-by-step explanation:

6)

a) -1-[9(-8)]-2 = -1 - (-72) -2

= -3 + 72 = 69

b) 81 + 4² = 81 + 16

= 97

c)12×7 + 6÷3 =(12×7)+(6÷3)

= 84 + 2

=86

d)74 + 9 ÷ -3 = 74 + (9÷ -3)

= 74 - 3

= 71

7)

Statement: Larry has at most seven miles left in the race

This statement is represented by the inequality;

[tex]x \leqslant 7[/tex]

Answer:

Part A.

69

Part B.

97

Part C.

93

Part D.

86

Step-by-step explanation:

Part A.

-1-9x(-8)-2

-1+72-2

69

Part B.

81+4^2

81+16

97

Part C.

12x7+6+3

84+6+3

93

Part D.

74+9+3

83+3

86

Hi :)

Rate of change is the change in the y divided by the change in x

Here's the formula

R = (∆y / ∆x )

R = rate of change

∆y = change in y

∆x = change in x

Answer:

C

Step-by-step explanation:

Answer:

5 newspapers in 1 pile

Step-by-step explanation:

If there are 10 newspapers in 2 piles, to find the number of newspapers in 1 pile, we need to divide 10÷2 which equals 5.

Answer: 5 newspapers per pile

Step-by-step explanation:

= 10 newspapers in 2 piles

= newspaper per pile = 10 / 2

= 5

So , newspaper per pile is 5

This is your answer

Answer:

The savings were changed by $88

Step-by-step explanation:

1 backpack costs 8 dollars and they bought 8 of them, you have to multiply 8 dollars by 8 cause there is 8 backpacks which is 64 , pen and pencils for 1 backpack costs 3 dollars , so you have to multiply 3 by 8  cause there are 8 backpacks which is 24. then you add 64 and 24 which is 88

The three possible sets of integers whose product is -7 are:

1. (1, 1, -7) (least to greatest)

2. (-1, 1, 7) (least to greatest)

3. (-1, -1, 7) (least to greatest)

To find the three possible sets of integers whose product is -7, we need to consider all the combinations of three integers whose product results in -7. Keep in mind that each set should use unique integers. Let's explore the options:

1. Set 1: [tex]\(1 \times 1 \times -7 = -7\)[/tex]

2. Set 2: [tex]\((-1) \times 1 \times 7 = -7\)[/tex]

3. Set 3: [tex]\((-1) \times (-1) \times 7 = -7\)[/tex]

The three possible sets of integers whose product is -7 are:

1. (1, 1, -7) (least to greatest)

2. (-1, 1, 7) (least to greatest)

3. (-1, -1, 7) (least to greatest)

Each set consists of unique integers, and the product of all three integers in each set is -7.

To know more about integers:

https://brainly.com/question/30264184

#SPJ3

Answer: (for 11b) 15/6

Step-by-step explanation:

I added image of how I solved (I’m 99% sure this is right)

Hope this helps :-))

Answer:

[tex] \frac{5}{2} [/tex]

Step-by-step explanation:

the answer done is of (b)

Hope it helps.

Answer: Thrid choice. 4

Step-by-step explanation:

Given equation

(-3/4)m - (1/2) = 2 + (1/4)m

The least common multiple of the denominator

First three multiples of 2: 2, 4, 6

First three multiples of 4: 4, 8, 12

Since 4 is the first common multiple, 4 is the least common multiple of 2 and 4.

By multiplying [tex]\boxed{4}[/tex] on both sides, the fraction can be eliminated.

Hope this helps!! :)

Please let me know if you have any questions

Answer:

Irrational

Step-by-step explanation:

Because irrational numbers are defined as a subset of real numbers, all irrational numbers must be real numbers.

Step-by-step explanation:

you'll use the previous date t fine the difference ex. if yesterday was 80 degrees and today's is 84 the difference would be 4 degrees. hope this helps a bit ( I'm pretty sure this is correct also remember if you need ask teacher for help!!)

Answer:

Step-by-step explanation:

Basically you have to look at the forecast each day and find the lowest and highest tempreature that day and find the difference and subract the two numbers of the tempreature.

Answer:

y = 1500x + 20690

Step-by-step explanation:

    We already know the slope. The prompt tells us that in 1996 there were 29,690 movie screens. We can write this as the point (6, 29690). We can find the y-intercept by substituting information into the point-slope formula.

[tex]y-y_1=m(x-x_1)\\\\y-29690=1500(x-6)\\\\y-29690=1500x-9000\\\\y=1500x+20690[/tex]

    Now we know that number of movie screens in 1990 was 20,690 and that it increased by 1500 each year.

Answer:

yes. because the price is 3 times the number of pens

Step-by-step explanation:

2*3=6

4*3=12

5*3=15

8*3=24

Answer:

A and B are irrational

Step-by-step explanation:

A cannot be reduced to a whole number.

same with B.

C can be reduced to 9 as 9x9 = 81

D can be reduced to 8 as 8x8 = 64