Can someone actually help me with this!!!!!

Answer:

4metres

Step-by-step explanation:

Given the height of the trail modeled by the function h(x) = -0.1x^2 - 0.3x +2.8 , where x is the horizontal distance in kilometers

The horizontal distance occurs at the x intercept i.e at h(x) = 0

Substitute

0 = -0.1x^2 - 0.3x +2.8 ,

Multiply through by -10

0 = x^2 + 3x - 28

x^2 + 3x - 28 = 0

Factorize

x^2 + 7x - 4x - 28 = 0

x(x+7) - 4 (x+7) = 0

(x-4)(x+7) = 0

x-4 = 0 and x+7 = 0

x = 4 and -7

Since the danced cannot be negative, hence the horizontal distance of the trail is 4m

Answer:

its 5 answer is 5

Step-by-step explanation:

5 is the a swer

Answer:

Hi, let's turn the word problem into a set of equations:

Let's say that x = # of chickens, and y = # of pigs

If there are 13 animals altogether, that means that

x + y = 13

If there are 40 legs together, we know that chickens have 2 legs, while pigs have 4, so the total number of legs would be:

2x + 4y = 40

We now have two different equations, with the same two variables, so we can rearrange and substitute one equation into the other to solve. We can rearrange the first equation as:

x + y = 13

x = 13 - y

Let's plug this expression for "x" into the second equation:

2(13-y) + 4y = 40

Now we have an equation with only one variable, so we can use algebra to solve for y:

26 - 2y + 4y = 40

2y = 14

y = 7, there must be 7 pigs.

From the first equation that we rearranged,

x = 13 - y

Now that we know the numerical value of "y", we can plug that in:

x = 13 - 7

x = 6, there must be 6 chickens

Answer:

The answer is Zero.

Step-by-step explanation:

Adding a negitive 5 to a positive 5 cancels out

Answer:

0

Step-by-step explanation:

It's a negative five, meaning that if you are adding it, the number will still go back.

You made $5, but you're in debt of $5. So even though it is supposed to go up, it goes down back to 0 due to the debt, which is the negative.

Answer: 1/20

Step-by-step explanation:

1/20 liters because 5 times 4/1 (5 divided by 1/4) equals 1/20

Answer:

There isn't any picture, so I'm assuming that the volume is l*w*h. Just multiply the three dimensions.

Step-by-step explanation:

Answer:

700

Step-by-step explanation:

Answer:

The ratio to compare would be C) 5 to 3 because there are 5 red amrbels and 3 blue ones

Answer:

18.8

Step-by-step explanation:

All you do is multiply 47 by 40%.

You can also multiply it by 60% then do 47 minus 28.2

Answer:

X=3

Step-by-step explanation:

Rearrange terms

6+3=15

3+6=15

Subtract from both sides of the equation

3+6=15

3+6−6=15−6

Simplify

Subtract the numbers

Subtract the numbers

3=9

x=3

X = 3.

Step-by-step explanation:

1) Subtract 6 from both sides.

[tex]3x = 15 - 6[/tex]

2) Simplify 15 - 6 to 9.

[tex]3x = 9[/tex]

3) Divide both sides by 3.

[tex]x = \frac{9}{3} [/tex]

4) Simplify 9/3 to 3.

[tex]x = 3[/tex]

So, therefor, 5he answer is x=3.

Answer:

110cm

Step-by-step explanation:

With the slice, we know that we need to find the area of a triangle with a base of 10cm and a height of 22cm.

Let 10 be x and 22 be y.

Substitute this into the equation for finding the area of a triangle.

[tex]\frac{x*y}{2}[/tex]

Which now becomes

[tex]\frac{11*20}{2}[/tex]

Which now becomes

[tex]\frac{220}{2}[/tex]

Now solve.

[tex]\frac{220}{2} = 110[/tex]

Your answer is 110cm.

Hope this helps. Have a nice day. Oh, and one more thing. Surprised that I'm not stealing points?

Answer:

25.13

Step-by-step explanation:

2 pie  multiply radius

2 pie multiply  4

( I think so)

I hope this helps

Answer:

y = - x - 8

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c

Given

4x + 4y = - 32 ( subtract 4x from both sides )

4y = - 4x - 32 ( divide all terms by 4 )

y = - x - 8 ← in slope- intercept form

Answer:

x+y=-8

Step-by-step explanation:

-32=4x+4y

-4y=4x+32

y=(4x+32)/-4

y=-x-8

x+y=-8

Now comparing to slope intercept form

y=mx+c,we get

slope =1

y intercept =1

y=-8

Answer:

the height above the seal level at the end of the hike is [tex]1528 \frac{1}{5} feet[/tex]

Step-by-step explanation:

The computation is shown below:

[tex]= 1542 - 13 \frac{4}{5}\\\\= 1542 - \frac{69}{5}\\\\= \frac{7710-69}{5} \\\\= \frac{7641}{5}\\\\= 1528 \frac{1}{5} feet[/tex]

Hence, the height above the seal level at the end of the hike is [tex]1528 \frac{1}{5} feet[/tex]

Answer:

Its B

Step-by-step explanation:

the answer would be 6/6 because they want you to multiply 2 x 3/6

Answer:

formulae : 1/3 × area of base × height

= 1/3 × 6 × 8

= 1×2×8

=16

Answer:

$6000

Step-by-step explanation:

accumulated amount = A = PI

A = $6900

Let P = x

6900 - I = x

I = (x)(0.05)(3yrs) = 0.15x

6900 - 0.15x = x

Add

6900 = 1.15x

Divide, solve for x

x = 6000

Answer:

T = 59

U = 27

V = 94

Step-by-step explanation:

(5x +4) + (8x + 6) + (2x+5) = 180

15x + 15 = 180

15x = 165

x = 11

Answer:

Your answer is 4.99

Step-by-step explanation:

259.48/52 will take some work if you use long division, but eventually you  get your answer of 4.99

Answer: there all 40 but  for 32768 because its 32768 and 8 *9*8*8*8 because its 36864

Answer:

D) x>5

Step-by-step explanation:

The numerical values of the circumference and area are equal.

Answer:

To simplify it a

Step-by-step explanation:

Answer:-5 and 3

Step-by-step explanation:-5 +5 is 0 and 0 times any number is 0 also 3-3 is 0 and 0 times any number is 0

Answer:

D. One square and four triangles

Step-by-step explanation:

Cece is finding the surface area of a square pyramid by finding the sum of the areas of its faces

Square pyramid has a square base.

each edge of the square base joins at the top of the vertex to make a pyramid

The sides of the pyramid is a triangle

the square has 4 sides, so four triangle on the sides of the pyramid

Hence one square and four triangles forms a square pyramid

Answer:

The answer is A). one square and three triangles

Step-by-step explanation:

If i'm incorrect pleas let me know.

Answer:

5

Step-by-step explanation:

Ask your self which equation you should use. Since it says F(3) then we have to find an equation that would fit this correctly. For example if we look at -X^2, X<-2 we could see that 3 is clearly not less than -2, leading to the conclusion that this is not the right equation.. If you look at the last equation it says that x has to be greater/equal to 0 which is true. So then we are left with the equation...

F(3)=x+2

F(3)=3+2

F(3)=5

Answer:

A. J = 17 + 5

B. J = 22

Jessica has $22.

Answer:

22

Step-by-step explanation:

17+5 because the 5 represents how many more do jessica got and 17 means how much sarah got it total

Answer: $48.06

Step-by-step explanation:

Simply take the sales price minus the unit cost, and divide that number by the unit cost. Then, multiply by 100 to determine the markup percentage. For example, if your product costs $50 to make and the selling price is $75, then the markup percentage would be 50%: ( $75 – $50) / $50 = . 50 x 100 = 50%.

Answer:

You would pay $48.06

Step-by-step explanation:

27*0.78 = 21.06

27 + 21.06 = 48.06

Answer:

36

Step-by-step explanation:

90÷5=18

18×2=36

We multiply two because the ration for adults is 2