Hi, I need help, am struggling with this. Question is in image below. ​

Answer:

B

Step-by-step explanation:

I did some maths

Answer:

Step-by-step explanation:

Henry X blue

Rachel 5 blue and Y black

Jack 3 times the total of pens ( blue & black)

So

X + 5 + Y for Henry and Rachel

Jack : 3( X + 5 + Y)

Jack has 3X + 15 + 3Y.

Pens of jack 3X + 15 Blue & 3Y black.

Answer:

Arabic numerals

Step-by-step explanation:

The numbers we use today are mostly derived from Arabic numerals. These number system existed long before the use of the English language itself.

Answer:

Numbers and counting began around 4000 BC in Sumeria, one of the earliest civilizations. With so many people, pets, crops, and crafts all in one place, cities needed a way to organize and keep track of it all, as it was used, added, or sold.

Step-by-step explanation:

The rotation of the triangle ABC 360 degrees about the y-axis forms a cone

From the question, we understand that the triangle ABC is a right triangle

The vertical cross-section of a cone is a right triangle.

This means that a right triangle can be rotated 360 degrees on one of its legs (opposite or adjacent) to form a cone

Hence, the rotation of the triangle ABC forms a cone

Read more about rotation at:

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Answer: A , C and D

Step-by-step explanation:

first find the difference

24-3 =21

then the ratio is 3:21

Answer:

b

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

70 - ( cube root of 64 )^3 = 70 - (4) ^ 3 = 70 - 64 = 6

Answer:

Step-by-step explanation:

Find attached:

For algebraic division use KCF method.

K - Keep the first fraction

C- Change division to multiplicatin

F -Flip the second fraction.

3) Indenty used: (a -b)² =a² -2ab + b²

Where a = m and b =2

4) Identity used: (a +b)² = a² + 2ab +b²

Where a = w and b = 1

5) Identity used: a² - b² = (a +b)*(a -b)

Where a = z and b = 2

Answer:

x+1

Step-by-step explanation:

Answer:

x + 1

Step-by-step explanation:

If we take away 2x from 3x, the remaining is 1x which is simply written as x. If we take away 2 from 3, the remaining is 1. (3 - 2 = 1)

Answer:

In exponential form given function is equal to [tex]N = b^{r}[/tex]

Step-by-step explanation:

We are given with function,

[tex]log_{b} ^[/tex] [tex]^{N} = r[/tex]

We have to express it in exponential form.

Consider,

[tex]log_{b}^[/tex] [tex]^ {N} = r[/tex]

exponential both side to the power of b as base of given log function is b.

we get

[tex]b ^{logb}[/tex] [tex]^ {N} = b^{r}[/tex]

[tex]N = b^{r}[/tex]

Therefore In exponential form given function is equal to [tex]N = b^ {r}[/tex]

Answer:

a

Step-by-step explanation:

the volume (V) of a sphere is calculated as

V = [tex]\frac{4}{3}[/tex]πr³ ( r is the radius )

here the diameter = 15, then r = 15 ÷ 2 = 7.5 , then

V = [tex]\frac{4}{3}[/tex]π × 7.5³

   = [tex]\frac{4}{3}[/tex]π × 421.875

    = [tex]\frac{4\pi (421.875)}{3}[/tex]

    ≈ 1767 cm³ ( to the nearest cubic cm )

1. 48 ? -8 = -6

48/ -8 = -6

2. -40 ? 8 = -5

-40/ 8 = -5

3. 12 ? -2 = 14

12 - (-2) = 14

12 + 2 = 14

4. 18 ? -12 = 6

18 + (-12) = 6

18 - 12 = 6

5. 18 ? -20 = -2

18 + (-20) = -2

18 - 20 = -2

6. 22 ? -0.5 = -11

22 * -0.5 = -11

22 / -2 = -11

You just have to check your work :)

To add or subtract rational expressions with unlike denominators, first find the LCM of the denominator. The LCM of the denominators of fraction or rational expressions is also called least common denominator, or LCD. Write each expression using the LCD.

Adding or subtracting rational expressions is remarkably similar to adding and subtracting fractions, since a rational expression is a fraction.

The operations are the same.

When adding or subtracting fractions with unlike denominators, we multiply the denominator of one fraction times the denominator of the other fraction, and then alter the numerators.

The process with rational expressions is the same.

So the first step is to make sure both rational expressions have the same denominator.

hope helpful ~

Answer:

takes him 8.4 hrs

Step-by-step explanation:

if 1/4=18inch then 3 1/2=7/2 so 7/2 divide by 1/4=14 then 18 x 14=252

so distance is 252 miles

speed is 30mph so 252/30=8.4h

the answer might need the 0.4 in hrs too

Answer:

the x-coordinate of the vertex is the equation of the axis of symmetry of the parabola.

The vertex of the parabola is (-2,3)

So, the axis of symmetry is the line x = -2

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Characteristics of scientific models

Out of the given options, only D is an incorrect statement.

Answer:

D

Step-by-step explanation:

Just took the test

Step-by-step explanation:

they are both linear functions. A function is linear when the degree on X is equal to 1

The volume of the solid that results when the region enclosed by the given curves y = e⁻²ˣ, y = 0, x = 0, and x = 1 is revolved around the x-axis and the y-axis is 0.77 and 0.7135.

Revolving the region bordered by y = f(x) and the x-axis on the interval [a, b] around the x-axis generates the volume (V) of a solid.

The volume is given as

[tex]\rm Volume = \int _a^b \pi y^2 \ dx[/tex]

The volume of the solid that results when the region enclosed by the given curves y = e⁻²ˣ, y = 0, x = 0, and x = 1 is revolved around the x-axis.

[tex]\rm Volume = \int _0^1 \pi (e^{-2x})^2 \ dx\\\\\\Volume = \int _0^1 \pi (e^{-4x}) dx\\\\\\Volume = \pi [\dfrac{e^{-4x}}{-4}]_0^1\\\\\\Volume = - \dfrac{\pi}{4} [e^{-4} - e^0]\\\\\\Volume = -\dfrac{\pi}{4} [-0.98168]\\\\\\Volume = 0.77[/tex]

The volume of the solid that results when the region enclosed by the given curves y = e⁻²ˣ, y = 0, x = 0, and x = 1 is revolved around the y-axis.

[tex]\rm Volume = \pi \left [\int_{0}^{0.135} dy + \int_{0.135}^{1}\left ( \dfrac{\ln x}{-2} \right )^{2}dy \right ]\\\\Volume =0.71375[/tex]

More about the revolution of the curve link is given below.

https://brainly.com/question/14640419

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Step-by-step explanation:

Hello there.

1.5 can be rewritten as "1 and 1 half"

Hope this helped!

-Angelo

Answer:

x=6

Step-by-step explanation:

24÷4=6

so 6×4=24 because of distributive proterty meaning that x=6 :))

Answer:

1.123

Step-by-step explanation:

first find the area of the circle which is 125.6/10 or 12.56.  Then divide take the square root which is around 3.54 and divide by pi which you get 1.1.23

Answer:

12.56 inches 10 × 12.56 = 125.6

The answer is 125.6 , If it is wrong i'm srry.

Step-by-step explanation:

Answer:

1 1/2

Step-by-step explanation:

Answer:

1 1/2

Step-by-step explanation:

3 x 1/2 = 1.5 or 1 1/2

No this is not the right answer. 2+9 equals 11.

Answer:

A. 2 + x = 5

B. x + 1 = 4

and E. Negative 5 + x = negative 2

are all similar

x=3  

Step-by-step explanation:

Answer:

the greatest common factor is 9

The correct statement states that the sales range for team 2 is greater than the sales range for team 1.

The range is defined as the difference between the maximum value to the minimum value.

Team 1

Worker's Age           Sales

25                             30,000

27                              29,000

28                              32,000

33                              35,500

Team 2

Worker's Age           Sales

25                          35,000

28                          37,000

29                          38,000

31                           65,000

Range Team 1 = 38000 - 30000 = 8000

Range Team 2 = 65000 - 29000 = 36000

Thus, The sales range for team 2 is greater than the sales range for team 1.

Learn more about the range:

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Answer:

the slope is -2/1 or -2