You throw a ball straight up with a velocity of 40 meters per second. What is the ball's velocity after 3 seconds?

Answer:

(9,3)

Step-by-step explanation:

Use elimination to solve.

-2 (-3x + 3y = -18)

6x - 6y = 36

-6x - 3y = -63

The 6x and -6x are eliminated and you are left with -9y = -27 when you combine -6y and -3y, and 36 - 63.

y = 3

Then, substitute 3 into either equation to find x

-3x + 3(3) = -18

-3x + 9 = -18

-3x = -27

x = 9

Answer:

C

Step-by-step explanation:

One side is 60 so the other side is 60

X=20

4(20)-20=60

60=(4(20)-20)

60=80-20

60=60

kinda got a bit dum

Answer:

6 < u < 8

Step-by-step explanation:

10 > 5u/4 > 15/2

To solve this, we need to isolate the variable u

10(4) > 5u/4(4) > 15/2(4)

40 > 5u > 30

40/5 > 5u/5 > 30/5

8 > u > 6

It probably wants you to write it in order so,

6 < u < 8

Your welcome, and if you have any questions, feel free to comment! :D

[tex]\\ \rm\hookrightarrow 10>5u/4>15/2[/tex]

[tex]\\ \rm\hookrightarrow 40>5u>30[/tex]

Divide 5

[tex]\\ \rm\hookrightarrow 8>u>6[/tex]

Answer: 61 degrees

Step-by-step explanation:

Answer:

312 people

Step-by-step explanation:

Hello!

Step 1:

First, we want to calculate what percentage of the random sample voted pretzels. To do that, we divide the number of pretzel voters depending on the total number of voters.

Calculate:

So, approximately 12% of the sample voted on pretzels.

Step 2:

Now that we know the average percentage of people that want pretzels, we can find the same percentage of the actual population of 2600 people.

We need to solve for 12% of 2600

Calculate:

Based on our percentages, we predict that 312 people favor pretzels.

Olivia only has 4 blooms when she adds no fertilizer.

According to the conditions of the question, being x the ounces of fertilizer Olivia adds to the soil, and y the number of blooms each rose bush has, the relation between them.

Given

Olivia is growing roses and keeps track of how much fertilizer (in ounces) she adds to the soil and how many blooms each rose bush has.

She finds a linear relationship that can be modeled by the equation y = 1. 345x + 4.

The equation of the line is;

[tex]\rm y=1.345x+4\\\\[/tex]

It's bee required to compute the value of x such that the roses have 4 blooms, thus

[tex]\rm 1.345x+4=4\\\\ 1.345x=4-4\\\\1.345x=0\\\\ x=0[/tex]

Hence, Olivia only has 4 blooms when she adds no fertilizer.

To know more about the equation of line click the link given below.

https://brainly.com/question/11597999

Answer:

Correct answer (96)

Step-by-step explanation:

Answer: 240 servings

Step-by-step explanation:

If 2 cups of milk can make 10 servings, that means each cup of milk can make 5 servings.

3 gallons = 48 cups (there are 16 cups in 1 gallon)

Therefore, 3 gallons can make 48*5 servings

= 240 servings

Using the z-distribution, as we are working with a proportion, it is found that since the test statistic is less than the critical value for the right-tailed test, there is not enough evidence to conclude that there has been an increase in the proportion of all kochia plants that are resistant to glyphosate.

In this problem, we consider that:

At the null hypothesis, we test if there has been no increase, that is, the subtraction is of 0.

[tex]H_0: p_2 - p_1 = 0[/tex]

At the alternative hypothesis, we test if there has been an increase, hence:

[tex]H_1: p_2 - p_1 \neq 0[/tex].

The proportions and standard errors are given by:

[tex]p_1 = 0.197, s_1 = \sqrt{\frac{0.197(0.803)}{61}} = 0.0509[/tex]

[tex]p_2 = 0.385, s_2 = \sqrt{\frac{0.385(0.615)}{52}} = 0.0675[/tex]

Hence, the distribution has mean and standard error given by:

[tex]\overline{p} = p_2 - p_1 = 0.0675 - 0.0509 = 0.0166[/tex]

[tex]s = \sqrt{s_1^2 + s_2^2} = \sqrt{0.0509^2 + 0.0675^2} = 0.0845[/tex]

It is given by:

[tex]z = \frac{\overline{p} - p}{s}[/tex]

In which p = 0 is the value tested at the null hypothesis, hence:

[tex]z = \frac{0.0166}{0.0845}[/tex]

[tex]z = 0.2[/tex]

Considering a right-tailed test, as we are testing if the proportion is greater than a value, with a significance level of 0.05, the critical value is of [tex]z^{\ast} = 1.645[/tex]

Since the test statistic is less than the critical value for the right-tailed test, there is not enough evidence to conclude that there has been an increase in the proportion of all kochia plants that are resistant to glyphosate.

More can be learned about the z-distribution at https://brainly.com/question/26454209

[tex]72 = 2^{3} x 3^{2}[/tex]

(8 x 9 = 72)

Answer:

Based on the number of terms in the given polynomial, what is it called?

x² - 2

A. binomial

Answer:

7

Step-by-step explanation:

x=13

x-6

replace x with 13

13-6

7

Answer:

Step-by-step explanation:

To find the slope, we use the slope formula

m = (y2-y1)/(x2-x1)

   = ( 4-4)/( 5 - -3)

   = 0/ ( 5+3)

  = 0/8

 = 0

Answer:

  y = -3

Step-by-step explanation:

You want the solution to the equation 5(y +2/5) = -13.

This is a 2-step equation.

Step 1, divide by 5:

  y +2/5 = -13/5

Step 2, subtract 2/5

  y = -13/5 -2/5 = -15/5

  y = -3

Answer: y = -3

Step-by-step explanation:

      [tex]\boldsymbol{\sf{Exercise\:solution \longmapsto \ 5\left(y+\dfrac{2}{5}\right)=-13 }}[/tex]

We multiply each term between kinship by 5.

            [tex]\boldsymbol{\sf{5y+5\times\dfrac{2}{5}=-13 }}[/tex]

We calculate the product of rational numbers.

             [tex]\boldsymbol{\sf{5y+2=-13 }}[/tex]

The constant moves to the right side and the sign is changed.

              [tex]\boldsymbol{\sf{5y=-13-2 }}[/tex]

We find the sum of two negative numbers.

                [tex]\boldsymbol{\sf{5y=-15 }}[/tex]

We divide both sides by the same number.

[tex]\boldsymbol{\sf{5y=-15 \ It \ changes \ y=\dfrac{-5}{5} =-3} }\\\\\ \ \ \ \ \ \ \ \boxed{\boldsymbol{\sf{y=-3 }}}\boldsymbol{\sf{ \ \longmapsto \ Answer}}[/tex]

Answer:

The largest smallest degree of f(x) + a*g(x) is 1.

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

The new maximum height of the ball is; 78m

The time taken to hit the ground is; 6seconds

The given function is;

The time at which the height is maximum according to the graph is; t = 2.

Hence, upon substitution the value of the maximum height according to the graph of the function is;

The time taken to hit the ground according to the graph is; 6 seconds

Read more on functions and graphs;

https://brainly.com/question/1615838

Answer:

30+4x=y

or 30 + 4 times the amount of months equals the total cost

Answer:

y=4x+30

Step-by-step explanation:

Hope this helps!

if not I'm sorry.

The round hole in the square machine part is an inscribed circle

The equation of the circle is [tex](x - 2)^2 + (y - 2)^2 = 1[/tex]

The corner of the square machine part is said to be at the origin.

This means that, the coordinates of the machine parts are:

(x,y) = (0,0), (4,0), (4,4) and (0,4)

Calculate the midpoint of the diagonals, to determine the midpoint of the circle.

(x,y) = 0.5 * (0 + 4, 4 + 0)

This gives

(x,y) = (2,2)

The diameter of the circle is:

d = 2 inches

Divide by 2 to calculate the radius

r = 1 inch

The equation of a circle is represented as:

[tex](x - a)^2 + (y - b)^2 = r^2[/tex]

Where:

Center = (x,y) = (a,b) = (2,2)

So, we have:

[tex](x - 2)^2 + (y - 2)^2 = 1^2[/tex]

Evaluate the square of 1

[tex](x - 2)^2 + (y - 2)^2 = 1[/tex]

Hence, the equation of the circle is [tex](x - 2)^2 + (y - 2)^2 = 1[/tex]

Read more about circle equations at:

https://brainly.com/question/1559324

y=5x+2

Step-by-step explanation:

your gradient/slope(m)=5

the line passes through points(0,2)

this gives us the intercept on y-axis(c)=2

therefore using the eqn;y=mx+c

y=5x+2

Answer:

25 tubs can be filled.

Step-by-step explanation:

96 goes into 2,400, 20 times so write a 2

2,400 - 1,920 from 96 x 20 = 480

96 goes into 480, 5 times so write 5

480 - 480 is 0

therefore,

the answer is 25 R 0

Answer:

3/4=6/8

Step-by-step explanation:

This is equal because 3/4 + 3/4 = 6/8. So this is your answer.

Hope this helped! :) Have a good day!!

Answer:

[tex] \frac{3}{4} = \frac{6}{8} [/tex]

Explanation:

divide the second fraction by 2 -> 6÷2/8÷2 -> 3/4

Answer:

1. k = 240

2. [tex]y=\dfrac{240}{x}[/tex]

3. 30 hours

Step-by-step explanation:

1.  if y varies inversely:

[tex]\implies y=\dfrac{k}{x}[/tex]

[tex]\implies 40=\dfrac{k}{6}[/tex]

[tex]\implies k=240[/tex]

2.

[tex]\implies y=\dfrac{240}{x}[/tex]

3. If x = 8:

[tex]\implies y=\dfrac{240}{8}=30[/tex]

Answer: Hope this helps <3

Step-by-step explanation:

Answer:

Elimination method

Step-by-step explanation:

We have a choice to eliminate the y or x:

I chose x

So now we double the second equation to make the co efficient of x the same:

6x-5y = -3

6x+4y = 24

Now we subtract both equations to eliminate the x's:

6x-5y = -3
-     -       -

6x+4y = 24

-9y = -27

y = 3

Now we substitute this value into either equation 1 or 2:
I chose 2

3x + 2(3) =12

Simplify:

3x + 6 =12

Subtract 6 from both sides:

3x + 6 -6 = 12 -6

Simplify:

3x = 6

Divide both sides by 3:

3x÷3 = 6÷3

Simplify:

x = 2

Answer:

(2, 3 ) by the elimination method

Step-by-step explanation:

6x - 5y = - 3 → (1)

3x + 2y = 12 → (2)

multiplying (2) by - 2 and adding to (1) will eliminate x

- 6x - 4y = - 24 → (3)

add (1) and (3) term by term to eliminate x

0 - 9y = - 27

- 9y = - 27 ( divide both sides by - 9 )

y = 3

substitute y = 3 into either of the 2 equations and solve for x

substituting into (2)

3x + 2(3) = 12

3x + 6 = 12 ( subtract 6 from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

solution is (2, 3 )

Answer:

5/7

Step-by-step explanation:

Hi, so the question is simplify 25/35. each fraction can be divided by five.

So each will be divided by five. So, first the numerator which is the top of the fraction. 25/5=5 so the new simplified top is 5.

The denominator, the bottom fraction, 35/5= 7, so the new simplified denominator is 7.

Refix the fraction and you have that 25/35 = 5/7

Answer:

5/7

Step-by-step explanation:

Say you got a 25 out of 35 questions right on a test you got 5/7 of them correct and get a 71.43% right.

Or think of it like 7 can go into 35 a total of 5 times and 5 can also go into 25 5 times.

Hope this helps have a great day:)

I don't know exactly what you're asking but 80% of 100 is 80

Explanation:

Let's say 5 people get a lunch platter. The cost would be 7*5 = 35 dollars.

Or if 3 people got the lunch platter, then it would be 7*3 = 21 dollars

In general, the cost is 7p dollars where p is a placeholder for a whole number. So that's how we end up with c = 7p

If it is one platter per person, the following will be true,

Answer:

c = 7p

Step-by-step explanation:

    This is because every time someone buys a platter, it adds $7 to the total cost

-> If two people buy a platter, it is 7 + 7, aka 7 *2

-> If three, it is 7 + 7 + 7 aka 7 * 3

    Using this pattern, we can see that the total cost will be 7 times the number of people there.

We can put this into an equation by doing:

c = 7p

Answer:

Option A

Step-by-step explanation:

Given the following question:

[tex]x < -1[/tex]

Keep a few things in mind when graphing the inequality:
. x value is less than -1 (which means the line will go in the direction of the x)
. < is a greater sign not greater than or equal (≤) so it would be a open dot.
. The number line starts at -1.

According to all this information your answer is indeed option A.

Hope this helps.