please if you can i urgently need help thank you very much

Answer:

The slope is m=1, y=1x-2

Step-by-step explanation:

Therefore, the slope is 1/1 so 1.

Using quadratic function concepts, it is found that:

The height of the rocket after x seconds is given by:

[tex]h(x) = -5x^2 + 10x + 20[/tex]

Which is a quadratic function with coefficients [tex]a = -5, b = 10, c = 20[/tex].

The maximum height will be a reached at a time of [tex]x_v[/tex], and will be of [tex]y_v[/tex], considering the vertex given by:

[tex]x_v = -\frac{b}{2a}[/tex]

[tex]y_v = -\frac{\Delta}{4a}[/tex]

[tex]\Delta = b^2 - 4ac[/tex]

Then:

[tex]x_v = -\frac{10}{2(-5)} = 1[/tex]

[tex]\Delta = 10^2 - 4(-5)(20) = 500[/tex]

[tex]y_v = -\frac{500}{4(-5)} = 25[/tex]

Thus:

It hits the ground when [tex]h(x) = 0[/tex], thus:

[tex]-5x^2 + 10x + 20 = 0[/tex]

[tex]x_1 = \frac{-b + \sqrt{\Delta}}{2a} = \frac{-10 + \sqrt{500}}{2(-5)} = -1.2[/tex]

[tex]x_2 = \frac{-b - \sqrt{\Delta}}{2a} = \frac{-10 - \sqrt{500}}{2(-5)} = -3.2[/tex]

We want the positive root, so, it takes approximately 3.2 seconds for the rocket to hit the ground.

A similar problem is given at https://brainly.com/question/24705734

Answer:

Los lados de la lista cuadrada que le fabricaron  miden 15 m

Step-by-step explanation:

Hola! Sabemos que la loseta tiene área cuadrada y que el área del cuadrado está dada por:

Ac = a²

Donde a es la medida de los lados del cuadrado.

Para hallar la medida de la lista cuadrada despejamos a aplicando raíz cuadrada a ambos miembros:

a = √(Ac)

a = √(225 m²)

a = 15 m

Los lados de la lista cuadrada que le fabricaron  miden 15 m

Respuesta:  Los lados de la lista cuadrada que le fabricaron  miden 15 m

Explicación paso a paso:

Hola! Sabemos que la loseta tiene área cuadrada y que el área del cuadrado está dada por:

Ac = a²

Donde a es la medida de los lados del cuadrado.

Para hallar la medida de la lista cuadrada despejamos a aplicando raíz cuadrada a ambos miembros:

a = √(Ac)

a = √(225 m²)

a = 15 m

Los lados de la lista cuadrada que le fabricaron  miden 15 m

Answer:

x° = 50° 2x°= 100°

Step-by-step explanation:

sum of all angle of triangle = 180°  therefore

x° + 2x° + 30° =180°  

 3x° = 180° - 30°

3x = 150°

x = 50°

2x = 100

Answer:

C) -6

Step-by-step explanation:

-6 + 2 = -4 not -12.

But -6 + (-6) = -12.

Hope this is what you were looking for :)

Answer:

(-3.2)^0 = 1

Step-by-step explanation:

Anything to the power of 0 equals 1.

Answer:

1

Step-by-step explanation:

Any number raised to a power of 0 is equal to 1.

The equation for a line is y = mx + b. where m is the slope and b is the y intercept.

The slope is -1/3 (rise: 1, run: -3)

And the y-intercept is at -4.

So the equation for the line is:

y = -1/3x - 4

And we want all the y values BELOW the line of -1/3x - 4 as well as the values on the line because it’s not dotted. So instead of equals we write:

y <= -1/3x - 4

“Y is less than or equals to -1/3x - 4” where it includes the solutions on the line, as well as any solutions below it.

y <= -1/3x - 4 is the answer

Answer:

the answer should me 1.5 grams

Step-by-step explanation:

Step-by-step explanation:

a)

a whole circle represents always 360 degrees.

we see the angle J is 72 degrees. the angle K is 90 degrees.

that leaves us for M and L together :

360 - 72 - 90 = 198 degrees.

we now know that twice as many people voted for L as for M. that means the angle L is twice as big as the angle M

on other words : L = 2M

and when we now say

198 = L + M

this means

198 = 2M + M = 3M

M = 66 degrees

and L is then 2M = 2×66 = 132 degrees

b)

again, the whole circle is 360 degrees.

J covers 72 of these 360 degrees.

that is 72/360 of all voting people.

72/360 = 1/5

the total of all voting people was 15840.

so, 1/5 of 15840 is

15840/5 = 3168

that means 3168 people voted for J.

Answer:

19

Step-by-step explanation:

take total divide by 5 and boom nice

=============================================================

Explanation:

Let's say x is the measure of angle 1, aka angle ABC. We'll also say the variable y is equal to angle 2, aka angle CBD.

Angles x and y add to angle ABD, which is 95 degrees

x+y = 95

Since angle 2 is four times that of angle 1, we also know that,

y = 4x

----------------

Let's apply substitution to solve for x

x+y = 95

x+4x = 95 ... replace y with 4x

5x = 95

x = 95/5

x = 19 which is the measure of angle 1

y = 4x = 4*19 = 76

x+y = 19+76 = 95 which helps confirm the correct answer.

Answer:

A US dollar is worth almost 114.34 Yen in Japan.

Step-by-step explanation:

( Yen is the currency they use in Japan )

Answer:

1 us dollar = 114.30 Japanese Yen

100 us dollars = 11430.65 Japanese Yen

Step-by-step explanation:

hope this helps

Answer:

I think the first one is correct.

The inequality represent the given graph is y≤7 . Therefore, option B is the correct answer.

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

From the given graph, the line passes through (0, -7)

In the given graph the inequality is y≤7

Therefore, option B is the correct answer.

To learn more about the inequalities visit:

https://brainly.com/question/20383699.

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Answer:

16.7%

Step-by-step explanation:

1/6 as a percent is 16.67 and to round to the nearest tenth would make that number 16.7

Step-by-step explanation:

that only know

Answer:

- [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

2x - y = 5 ( subtract 2x from both sides )

- y = - 2x + 5 ( multiply through by - 1 )

y = 2x - 5 ← in slope- intercept form

with slope m = 2

Given a line with slope m then the slope of a line perpendicular to it is

[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{2}[/tex]

Answer:

0.000067

or

6.7*10^-5

Step-by-step explanation:

brainliest plz

1 + 1 = 2

Have a beautiful and joyful day ahead.

Answer:

1+1= 2

have a nice day stay safe <3

Uhmm,, 132,894?

132,894 ba?

An area model for the area of 1,32,894 units² is shown in the image.

We have to give that,

The standard algorithm is,

642 x 207

Now, for the area model,

Draw a rectangle with a length of 642 units and a width of 207 units.

Then, the Area of the rectangle is,

A = Lenght x Width

A = 642 x 207

A = 1,32,894 units²

Hence, the Area is,

A = 1,32,894 units²

To learn more about the rectangle visit:

https://brainly.com/question/2607596

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Yeah your not the only one i am to

Step-by-step explanation:

8) 125=x+90° (exterior angle= sum of two opposite interior angle)

x= 35°

9) y=80° ( vertically opposite angle)

x= 180-50-80= 50°.

hope this helps you.

Answer:

y= 6/7

Step-by-step explanation:

0.5y + 7 = 5( 0.2 + 1.5y )

Get rid of the brackets first

0.5y + 7 = 1 + 7.5y

Move the like terms

0.5y + 7 - 7.5y = 1

0.5y - 7.5y = 1 - 7

Collect the like terms

-7y = -6

Divide both sides by -7 to get y on its own

y= -6/-7

A negative number divided by a negative number gives a positive number so

y = 6/7

Answer:

y=6/7  or 0.857 aprox.(0.86)

Step-by-step explanation:

[tex]0.5y+7=5(0.2+1.5y)[/tex]

[tex]0.5y+7=1+7.5y[/tex]

[tex]7.5y-0.5y=7-1[/tex]

[tex]7y=6[/tex]

[tex]y=6/7= 0.857[/tex]

I hope this help you

Answer:

x = 35/9 or 3 8/9

Step-by-step explanation:

removing the fractions implies using the distributive property, which is multiplying each term outside the parentheses by each term inside

in this problem, after distributing 3/5 we get:

3/5x - 3 = -2/3

we want to isolate the 'x' so we undo subtraction first by adding 3 to each side to get:

3/5x = 9/3 - 2/3

3/5 x = 7/3

x = 7/3 × 5/3

x = 35/9

3/5x = 7/3

we can get the 'x' by itself if we multiply each side by the reciprocal of 3/5, which is 5/3 to get:

x = 7/3 × 5/3

x = 35/3

Answer:

1st option

Step-by-step explanation:

let the three consecutive integers be n , n + 1 , n + 2 , then adding gives

n + n + 1 + n + 2 = 51, simplifying

3n + 3 = 51 ( subtract 3 from both sides )

3n = 48 ( divide both sides by 3 )

n = 16

n + 1 = 16 + 1 = 17

n + 2 = 16 + 2 = 18

The 3 consecutive integers are 16, 17, 18

Answer:

1 and 2/3 hours or 5/3 hours

Step-by-step explanation

1/3 of an hour would be 1/5 of the room so you would just make it 5/3 hours  and it'd be the whole room

B. y=3x+1

Step-by-step explanation:

#Hopeee Itttt Helppsssssss!

A proportion relationship is a direct relationship between two variables thus y = 4x will be the proportional relationship between x and y thus option (D) will be correct.

The ratio is the division of the two numbers.

Proportion is the relation of a variable with another. It could be direct or inverse.

A proportional relationship is given as,

A ∝ B

Removing proportionality

A = kB

Here, k is the constant of proportionality.

As per the given in last option,

y = 4x

x = (1/4)y

Removing constant.

x ∝ y

Hence "A proportion relationship is a direct relationship between two variables thus y = 4x will be the proportional relationship between x and y".

For more information about ratios and proportions,

brainly.com/question/26974513

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2) i don't know answer for 2, but i know that it isn't right triangle because from Pythagoras' Theory we know that for right triangle: a^2 + b^2 = c^2 but in this triangle 30^2 + 38^2 ≠ 54^2

3) from Pythagoras' theory we know that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides: a^2 + b^2 = c^2

we have to check this in this triangle:

12^2 + 16^2 = 400

√400 = 20

we know that third side of this triangle is 20 so this triangle is right triangle

3) in square all sides are same so If a is the one side of the square then area of this square will be a x a = 242

a^2 = 242

so from Pythagoras' theorem we can found the diagonal:

a^2 + a^2 = c^2 ( c is hypothenuse)

242 + 242 = c^2

484 = c^2

c = 22

hope it's correct and it'll help you :)

Answer:

F=86°

G=75°

H=19°.........

Answer:

[tex]3 \sqrt{2} [/tex]

Answer:

B = 3

Step-by-step explanation:

([tex]\sqrt{3}[/tex])([tex]\sqrt{6}[/tex]) = [tex]\sqrt{18}[/tex]

[tex]\sqrt{18}[/tex] = 3[tex]\sqrt{2}[/tex]

Answer:

28, trust me

Step-by-step explanation: