The expression 5x^2 + 25x + 70 can be used to estimate the height, in
meters, of a toy rocket x seconds after it is launched from a platform.
How many seconds does it take the rocket to hit the ground?

Answer:

1970 +46%

1980 +232%

1990 +14%

2000 -8%

Step-by-step explanation:

26/100

Step-by-step explanation:

26%

44+30+26=100

26/100

0.26

26%

Answer:

1) m<2 = 115°

2) m<5 = 83°

3) m<8 = 45°

4) m<4 = 137°

Step-by-step explanation:

When two lines cross over each other, creating four angles, the opposite angles are equal.

So in question one, <1 is equal to <2, the angle opposite it, and so it is 115°.

Similarly, in question two, <5 = <6 = 84°.

In question three, <8 = <9 = 45°.

and in question four, <3 = <4 =137°.

Answer:

1) 115

2) 83

3) 45

4) 137

Step-by-step explanation:

Each problem is asking you to find the missing angle given its vertical angle.

Vertical angles are congruent therefore the angle given is the answer

Just in case that doesn't make sense here you go:

For #1 ∠1 and ∠2 are vertical angles

vertical angles are congruent ( equal to each other ) so if

∠1 = 115° then ∠2 = 115°

For#2 ∠5 and ∠6 are also vertical angles so they are congruent

so if ∠5 = 83° then ∠6 = 83°

For #3 ∠8 and ∠9 are vertical angles so they are congruent

so if ∠8 = 45° then ∠9 = 45°

For #4 ∠3 and ∠4 are vertical angles so they are congruent

So if ∠3 = 137° then ∠4 = 137°

Answer:

OKay I am decent at geomentry and am in 7th grade but i can't help u if i have no clue whats ur problem? btw i suck at math in general but geomentry i can help with

Step-by-step explanation:

Step-by-step explanation:

Answer: An algebraic expression is a mathematical expression that consists of variables, numbers, and operations. We can use algebraic expressions to represent unknown number situations involving addition, subtraction, multiplication, and division.

Answer:

Answer: An algebraic expression is a mathematical expression that consists of variables, numbers, and operations. We can use algebraic expressions to represent unknown number situations involving addition, subtraction, multiplication, and division.

Step-by-step explanation:

Its The sample

EDG

Answer:

Area is 364

Step-by-step explanation:

A parallelogram's area is equal to base times height. So it doesn't depend on the angle at all, as long as the base and height are constant.

That means that the area of the parallelogram on the left is the same as if it was a rectangle (an extension of the rectangle part on the right).

This brings us to the answer - the area is the same as the area of a 14x26 rectangle.

14*26=364

Alternatively, let's compute the area of the rectangle on the right:

18*14 = 252

And the area of the parallelogram

14 * (26-18) = 14*8 = 112

And the area of the composite figure is 252+112 = 364

Answer:

N = 4

Step-by-step explanation:

9514 1404 393

Answer:

  5/3 mi/h

Step-by-step explanation:

To find rate in miles per hour, divide miles by hours:

  (5 mi)/(3 h) = 5/3 mi/h

Answer:

-7=<x<2

Step-by-step explanation:

Answer:

Homer is correct. ( also your teacher is pretty cool to have them on an assignment)

Step-by-step explanation:

2 negatives cancel eachother out. Negative 4 times negative 10 equals 40.

Answer: (0.120)(x) = 78 ; x is 65

Step-by-step explanation:

Answer:

y=5x+25

Step-by-step explanation:

The slope is (30-25)/(1-0)=5.

Also, the y-intercept is 25.

So, the equation is y=5x+25.

Answer:

3.5.

Step-by-step explanation:

Zach's teammates were late to practice last week. According to Khan Academy the answer is 3.5.

The mean number of times Zach's teammates were late to practice last week is 3.5

A dot plot visually groups the number of data points in a data set based on the value of each point.

Given that, the following dot plot shows how many times each teammate was late to practice last week.

We need to find mean,

Total elements = 2 + 4 + 4 + 4 = 14

Data points = 4

Mean = 14 / 4 = 3.5

Hence, the mean number of times Zach's teammates were late to practice last week is 3.5

Learn more about dot plots, click;

https://brainly.com/question/22746300

#SPJ2

Answer:

(x-2)²+(y-3)²=5².

Step-by-step explanation:

1. the equation of line through points (5;7) and (2;-2) is:

[tex]\frac{x-5}{3} =\frac{y-7}{9}; \ => \ 3x-y-8=0.[/tex]

2. to find the equation of the line, which is perpendicular to the line 3x-y-8=0:

the vector (3;-1) is perpendicular to the line 3x-y-8=0 and it is the vector-pointer for the requred line, and if |n₁|*|n₂|=0 (where n₁ is normal vector to the line 3x-y-8=0 and n₂ is normal vector to the required line), then 3*x-1*y=0 (where 'x' and 'y' any numbers). x=1; y=3, then n₂(1;3), then the required line is x+3y+C=0, where C - is unknown number.

3. to find the equation of the line, which is perpendicular to the line 3x-y-8=0 and passes through the middle point of (5;7) and (2;-2):

middle point is (7/2;5/2), then after substitution of coordinates of the middle point into the equation x+3y+C=0 it will be 3.5+3*2.5+C=0, ⇒ C= -11.

the required equation is x+3y-11=0

4. to calculate the intersection point of x+3y-11=0 and 2x-y=1:

[tex]\left \{ {{2x-y=1} \atop {x+3y=11}} \right. \ => \ (2;3)[/tex]

the point (2;3) is the centre of the required circle.

5. to calculate the radius² of the required circle:

r²=(5-2)²+(7-3)² or r²=(2-2)²+(2+3)², then r²=5².

6. if the centre of the required circle is (2;3) and its r²=25, then it is possible to make up the equiation of the circle:

(x-2)²+(y-3)²=5².

Answer:

x = 20°

Step-by-step explanation:

here's your solution

=>. we know that, sum of two opposite interior angle is equal to one exterior

=> (3x)° + (3x -20)° = (7x - 40)°

=> 6x - 20° = 7x - 40

=> - x = - 20

=> x = 20

hope it helps

Answer:

20°

Step-by-step explanation:

C.20 is the correct answer.

Answer:

1st number = 17

2nd number = 23

Step-by-step explanation:

x = 1st number

y = 2nd number

x = y - 6

6x = 10 + 4y

substitution method:

6(y - 6) = 10 + 4y

6y - 36 = 10 + 4y

2y - 36 = 10

2y = 46

y = 23

find 'x':

x = 23 - 6

x = 17

Answer:

Area of Shaded Area = 18.3

Step-by-step explanation:

P.S - The exact question is -

Given - In the following diagram, a quarter circle has been constructed using an isosceles right triangle whose legs measure 8 inches.

To find - Which of the following represents the area of the shaded region, rounded to the nearest tenth of a square inch?

Proof -

We know that,

Area of a quarter circle = [tex]\frac{1}{4} \pi r^{2}[/tex]

Also,

We know that ,

Area of isosceles Triangle = [tex]\frac{1}{2}*Base*Height[/tex]

Now,

Given that,

Radius of quarter circle = 8 inches

Base of Isosceles Triangle = 8 inches

Height of Isosceles Triangle = 8 inches

∴ we get

Area of a quarter circle = [tex]\frac{1}{4} \pi (8)^{2}[/tex] = 16[tex]\pi[/tex]

Area of isosceles Triangle = [tex]\frac{1}{2}*8*8[/tex] = 32

Now,

Area of Shaded area = Area of a quarter circle - Area of isosceles Triangle

                                 = 16[tex]\pi[/tex] - 32

                                 = 50.265 - 32

                                 = 18.265 ≈ 18.3

⇒Area of Shaded Area = 18.3

Answer:

58

Step-by-step explanation:

case I added it and I m right

Answer:

[tex] \boxed{A. \: 134 \: in³} [/tex]

Explanation:

Volume of a cone: ⅓πr²h.

Where r is the radius, and h is the height.

The diameter is twice (2 times) the radius.

(⅓)(π)(4²)(16) – (⅓)(π)(4²)(8) =

256 / 3 π – 128 / 3 π =

128 / 3 π =

42 ⅔ π = 134.041287... ≈ 134 in³

Answer:

I beleive your answer would be 6

8% of 75 is 6 and 4% of 75 is 3

Answer:

128 inches

Step-by-step explanation:

Answer:

128 inch

Step-by-step explanation:

The answer would be 128 inches since:

1 ft= 12 inches

10x12= 120

And you can't forget about the 8

120+8= 128 inches

Hope this helps

Answer:

4x^5 - 4x³ - 24x

Step-by-step explanation:

Answer:

4x^5 - 4x³ - 24x

Step-by-step explanation:

Distribute

[tex](4x^3+8x)(x^2-3)[/tex]

[tex]4(x^{2} -3)x^{3} +8x(x^{2} -2)[/tex]

Distribute

[tex]4(x^{2} -3)x^{3} +8x(x^{2} -2)[/tex]

[tex]4x^{5} -12x^{3} +8x(x^{2} -3)[/tex]

Distribute

[tex]4x^{5} -12x^{3} +8x(x^{2} -3)[/tex]

[tex]4x^{5} -12x^{3} +8x^{3} -24x[/tex]

Combine like terms

4x^5 - 4x^{3}  - 24x

Answer:

36:2 times 2 times 3 times 3.

60:2 times 2 times 3 times 5

72:2 times 2 times 2 times 3 times 3

Step-by-step explanation:

just keep in mind that when it says times it means multiplication sign.

hope this helps

You only put one equation in

Answer:

are you sure this is the right question? none of those have a sum of 23

Step-by-step explanation:

Answer:

a and e

Step-by-step explanation:

i did this quick check

Answer:

-153.91

slkdcbfhvwgehfv very professional