help with this question

Answer:

1.5 seconds

Step-by-step explanation:

Since f(x) represents the distance from the ground to the rock (in feet), we just need to find the values of x for which f(x) = 340. Substituting f(x) = 340 into f(x) = -16x² - 4x + 382 gives us:

340 = -16x² - 4x + 382

0 = -16x² - 4x + 42 (Subtract 340 from both sides)

16x² + 4x - 42 = 0  (Multiply entire equation by -1, "flip" equation)

8x² + 2x - 21 = 0    (Divide entire equation by 2)

(4x + 7)(2x - 3) = 0  (Factor LHS)

4x + 7 = 0 or 2x - 3 = 0 (Zero Product Property)

4x = -7 or 2x = 3 (Subtract -7 and add 3 from/to both sides, respectively)

[tex]x = -\frac{7}{4} =-1.75 . or .x= \frac{3}{2} = 1.5[/tex]

x = -1.75 is an extraneous solution because in the context of the question, you can't have negative seconds so therefore, the final answer is 1.5 seconds.

(hop this helps can I pls have brainlist (crown)☺️)

Answer:

[tex]6x = 4x + 6 \\ 6x - 4x = 6 \\ 2x = 6 \\ x = \frac{6}{2} \\ \boxed{x = 3}[/tex]

Answer:

x = 3

Step-by-step explanation:

In pic

(Credits: Symbolab)

(Hope this helps can I pls have brainlist (crown)☺️)

Answer:

C

Step-by-step explanation:

No slope is given so your slope is 0. Since both have no slope, they are both flat and therefore parallel

Answer:

I am pretty sure thats acute triangle but not 100%

Step-by-step explanation:

1. -3x+7x=18

    x(-3+7)=18

      x=[tex]\frac{18}{(-3+7)}[/tex]

2. 4x+7x=-5

    x(4+7)=-5

     x=[tex]\frac{-5}{(4+7)}[/tex]

I hope this helped, may be wrong but ive done it my way

Answer:

128 divided by 2 for 5 times is your answer enjoy my.kiddo

Answer:

Step-by-step explanation:

Let the number is x.

3/4 of a number is 120:

What is three-eights of the number:

Answer:

Step-by-step explanation:

Answer:

[tex] \frac{17}{40} [/tex]

Step-by-step explanation:

[tex] \frac{4}{5} - \frac{3}{8} [/tex]

First, find the common denominator

So we multiply 4 by 8, and get 32

Then we multiply 3 by 5, and get 15

Next we give both terms new denominators 5 × 8 =40

So now our fractions look like this:

[tex] \frac{32}{40} - \frac{15}{40} [/tex]

Now...that our denominators match we can simply

subtract the numerators

32 − 15 = 17

Thus the answer is:

[tex] \frac{17}{40} [/tex]

Hope this helped you- have a good day bro cya)

Answer:

-4,-8 : 8,8

Step-by-step explanation:

[tex]\displaystyle (f-g)=f(x)-g(x) =3x^3+4x^2-8x-2-(3x-5 )= \\\\ \boxed{3x^3+4x^2-11x+3}[/tex]

Answer:8

Step-by-step explanation:

Answer:

Let the number be x

2x-5=1/2(3x-3)

2(2x-5)=3x-3

4x-10=3x-3

4x-3x=-3+10

x=7

I don't know what I'm am doing....

Answer:

w would be like 33 and x would be 45

Answer:

x=66, w=48

Step-by-step explanation:

since this is an isocsles triangle, x and angle j would have to have the same measure, 66 degrees. When you add 66 and 66 together, you can get the sum of angle j and x which is 132. You can subtract 132 from 180 (since all angles of the triangle add up to 180) to get w

180-132=48

so x=66 and w=48

Answer:

5 inches

Step-by-step explanation:

60÷12=5 cents ( 1 inches of wire )

25÷5=5 inches

Answer:

-3

Step-by-step explanation:

You might find it easier to write -(11 - 8), which is -(3), or -3.

Answer:

8-11

Infront of 8 there will be+

so +8-11

- + = - so 8-11=-3

-3 is the answer of 8-11

Answer:

It is Linear Increasing.

Step-by-step explanation:

If it is a straight line, it is a linear function. if it is NOT a straight line, then it is a non-linear function.

Edit: When the line starts from the top of the y-axis, then it is decreasing. If the line starts from the Origin Point (as shown in the picture you included), then it is increasing. I hope this helps you in Linear and Non-linear relationships.

Answer:

24 cars

Step-by-step explanation:

out of 80 toys, 3/5 are buses- 80 * 3/5 is 48 so there are 48 buses

80 - 48 is 32, 32 of the rest of the toys are cars and bikes

we know that there are 3 times as many cars than bikes, so to find out how many cars and bikes there we can do 3n + n, where n is the number of bikes it also equals 4n

32 = 4n; n = 8

there are 8 bikes, so there are 24 cars

(hope this helps) :)

Step-by-step explanation: in the picture

please give me a brainliest answer

Answer:

37

Step-by-step explanation:

S+S+106⁰=180⁰(sum of angles of triangle)

2S=180⁰-106⁰

S=74⁰/2

S=37⁰

___________

[tex] \: [/tex]

[tex]\boxed{ \rm{answer \: by \: { \boxed{ \rm{☆HayabusaBrainly}}}}}[/tex]

x² = (6,9)² + (5,3)²

x² = 47,61 + 28,09

x² = 75,7

x = 8,7yd✔

Answer:

mx + y = c slope = - 4 and y - intercept = 2 , then the equation of line is mx + y = c .

Step-by-step explanation:

If I am wrong sorry If I am right mark me brainliest

__________

[tex] \: [/tex]

6x - 9 = 5x + 10

6x - 5x = 10 + 9

x = 19✔

Answer:

Since the two base angles are congruent (same measure), they are each 70°. If we are given a base angle of say 45°, we know the base angles are congruent (same measure) and the interior angles of any triangle always add to 180°.

Answer:

degrees

Step-by-step explanation:

Answer:

y = -5/2 + 12

Step-by-step explanation:

Answer:

three cytliys and six ka

Step-by-step explanation:

hope it hlp you

Answer:

let the angles be x,2x

=>90+x+2x=180

=>3x=90

=>x=30

so, the angles are 30,60

let the angles be x,2x

=>90+x+2x=180

=>3x=90

=>x=30

so, the angles are 30,60

Answer:

h=57

Step-by-step explanation:

The triangles seem to have a pattern, which is that the numbers on the left are multiplied by 1.5 to get the numbers on the right. We figured this out by doing 42/28 and 54/36 (which are the corresponding numbers), which would both equal 1.5. Now to find h we would do the opposite of divide which is multiply, we would do 38*1.5 and get 57.

Answer: perpendicular

Step-by-step explanation: You can do this (of course, you have to know the equations of the pairs of lines under consideration);

For each equation, put in form y = mx + b and compare their slopes (values of m).

If the m's are equal, the two lines are parallel;

if the product of the two m's equals -1, the two lines are perpendicular.