help!! study island

Look at all the steps above. They lead to a double solution. The symbol

[tex]x=\pm 5[/tex]

means that [tex]x[/tex] can be either positive or negative 5. You can't accept negative values for lengths, so you're left with one option only.

Answer:

b=35

Step-by-step explanation:

Let's start by interpreting the question first

b/7 +1=6

Lcm is 7

b+7/7=6

Cross multiply

b+7=7×6

b+7=42

Substrate 7 from both sides

b=42-7

b=35

Therefore the final answer is 35

Answer:

a. [tex]18x^3 -60x^2 + 33x - 45[/tex]

b. No

Step-by-step explanation:

Given:

(3x-9) and [tex]6x^2-2x+5[/tex]

=> the production of them is:

[tex](3x-9)(6x^2-2x+5)[/tex] , we will use distributive law to solve this To do that. we first multiply  [tex]6x^2-2x+5[/tex] by 3x then by -9. This is done as follows

= [tex]3x (6x^2-2x+5) - 9(6x^2-2x+5)[/tex]  [tex]= (3x * 6x^2-3x * 2x+3x *5) - (9* 6x^2-9* 2x+9* 5)\\\\= (18x^3 -6x^2+ 15x) - (54x^2 - 18x +45)[/tex]

Then Open both brackets

= [tex]18x^3 -6x^2+ 15x -54x^2 + 18x -45[/tex]

After that, we group the same terms

= [tex]18x^3 -(6x^2 +54x^2)+ (15x + 18x) -45[/tex]

= [tex]18x^3 -60x^2 + 33x - 45[/tex]

(b) Is the product of (3x-9) and  [tex]6x^2-2x+5[/tex]  equal to the product of (9x-3) and [tex]6x^2-2x+5[/tex]

No, let find the product of (9x-3) and [tex]6x^2-2x+5[/tex] , we will use distributive law to solve this as the above example.

= (9x-3)[tex](6x^2-2x+5)[/tex]

= [tex]9x (6x^2-2x+5) - 3(6x^2-2x+5)[/tex]

=[tex](9x * 6x^2 - 9x * 2x + 9x *5) - (3* 6x^2 - 3 * 2x + 3* 5)[/tex]

= [tex](54x^3 - 18x^2+ 45x) - (18x^2 - 6x +15)[/tex]

After that, we open the bracket to find the same terms

= [tex]54x^3 - 18x^2+ 45x -18x^2 + 6x -15[/tex]

= [tex]54x^3 - 18x^2 -18x^2 + 45x + 6x -15[/tex]

= [tex]54x^3 - 36x^2 + 51x -15[/tex]  

As you can see [tex]54x^3 - 36x^2 + 51x -15[/tex]   ≠[tex]18x^3 -60x^2 + 33x - 45[/tex]

Hope it will find you well.

For this case we can propose an equation that will allow us to find the price of one of the books knowing the price of the other.

x: Let the variable that represents the price of the book with a green sticker

y: Let the variable that represents the price of the book with a yellow sticker

According to the statement we have:

[tex]x = \frac {y} {2} -2\\[/tex]

[tex]y=2(x+2)[/tex]

Finally, we can substitute the price of one of the books and clear the value of the other as the case may be.

Answer:

[tex]x = \frac {y} {2} -2[/tex]

Answer:

Explanation:

1. Name the variables:

2.  Build a table to determine the number of hours each lift requires from each department:

Number of hours

                                        small lift    large lift   total per department

Welding department            1x             3y                x + 3y

Packaging department        2x             1y                2x + y

3. Constraints

Then you must:

4. Graph

See the graph attached.

Here is how you draw it.

5. Test the profit function for each vertex

The profit function is P(x,y) = 25x + 90y

The vertices shown in the graph are:

The profits with the vertices are:

Thus, the solution that optimizes the profit is producing 0 smaller lifts and 90 larger lifts.

Final answer:

To maximize profits from manufacturing boat lifts, define variables as x for small lifts and y for large lifts, and list the constraints from the welding and packaging departments' available hours alongside non-negative production quantities.

Explanation:

To find how many of each type of boat lifts should be produced to maximize profits, first, we need to define our variables and list our constraints.

List your variables

List your constraints

These constraints represent the limits on production based on the available hours in each department, whilst also considering that the production of both types of lifts must be a non-negative quantity.

Answer: Angle J= 75 degrees and angle K=40 degrees.

So the right answer is of option B..

Answer:

c d e?

Step-by-step explanation:

btw I'm not sure :")

Answer:

A,d,e

Step-by-step explanation:

Answer:

i think the answer is 38

Step-by-step explanation:

$190 divided by 5% = 38

Answer:

90t-21t=69t

Step-by-step explanation:

4:00pm to 6:00 am is 14 hours. 14 x 1.5 is in fact 21 which means the temperature dropped 21 degrees in those 14 hours.

The equation to represent the temperature after a certain number of hours is t = 90 - 1.5h.

The equation to represent the temperature, t, after h hours can be written as: t = 90 - 1.5h.

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Answer:

Fraction=3/10

Decimal=0.3

Percent=30%

Step-by-step explanation:

First we have to add 12+16 so we can find how many marbles are left

12+16=38

Then, we subtract it from the total number of marbles.the outcome of this operation would be equivalent to the number of blue marbles

40-38=12

There are 12 blue marbles.

Now, the we have to use experimental probability if you are familiar with the term is that the number of outcomes(the blue marbles) must be over the total sample space(total marbles) in a fraction.

Probability=

12/40

Simplify

12/40

6/20

3/10

Probability

Fraction=3/10

Decimal=0.3

Percent=30%

Answer:

The answer is A my dude

Step-by-step explanation:

Answer:

He loses 12 limbs over 4 days (need one more branliest to level up)

Step-by-step explanation:

loses 3 on monday (-3)

loses 3 on tuesday (-3)

see the pattern

Answer:

Point M

Step-by-step explanation:

4/5=8/10

Point M was on 8/10.

Answer:

∠JXM and ∠NXP are complementary

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

[tex]m\angle JXM+m\angle MXN+m\angle NXP=180^o[/tex] ----> form a straight line

we have

[tex]m\angle MXN=90^o[/tex]

substitute

[tex]m\angle JXM+90^o+m\angle NXP=180^o[/tex]

[tex]m\angle JXM+m\angle NXP=180^o-90^o[/tex]

[tex]m\angle JXM+m\angle NXP=90^o[/tex]

Remember that

Two angles are complementary, if their sum is equal to 90 degrees

therefore

∠JXM and ∠NXP are complementary

Answer:The answer is A, I got it right

Step-by-step explanation:

Answer:

the answer is D) m4/n2

Step-by-step explanation:

(m 2/3 n -1/3) 6

2/3 x 6= 4

-1/3 x 6 =-2

you cannot have a negative exponent in this situation so you would put n -2 on the bottom which makes it positive.    

Answer:

Other guy is correct it's D

Step-by-step explanation:

Answer:

One solution x=4

Step-by-step explanation:

5x+20=4(x+6)

Distribute

5x+20 =4x+24

Subtract 4x from each side

5x -4x +20 = 4x-4x+24

x+20 = 24

Subtract 20 from each side

x+20-20 =24-20

x =4

Answer:

Explanation:

1. Find the vertical and horizontal components of the initial velocity

a) Horizontal component:

      [tex]v_{0,x}=v_0\times cos(20\º)=135ft/s\times cos(20\º)=126.86ft/s[/tex]

b) Vertical component:

      [tex]v_{0,y}=v_0\times sin(20\º)=135ft/s\times sin(20\º)=46.17ft/s[/tex]

2. Find the time when the ball runs 380 feet horizontally:

          [tex]x=v_{0,x}\times t\\\\380ft=126.86ft/s\times t[/tex]

          [tex]t= (380ft)/(126.86ft/s)=2.995s\approx 3.0s[/tex]

3. Find the height of the ball when the time is 3.0s

       [tex]y=y_0+v_{0,y}\times t-gt^2/2[/tex]

     [tex]y=3ft+46.17ft/s\times 3.0s-32.174ft/s^2\times (3.0s)^2/2[/tex]

     [tex]y=-3.3ft[/tex]

This result means that the ball does not reach the wall because it has fallen to the ground (when y = 0) before 3.0s.

Answer:

B. -1

Step-by-step explanation:

If we have a parabola whose equation is:

[tex]y=ax^{2} +bx+c[/tex]

The line of symmetry is calculated as:

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

Now, we have the equation [tex]y=ax^{2}-4x+3[/tex] and the line of symmetry is [tex]x=-2[/tex]

Where:

[tex]b=-4\\c=3[/tex]

So, we can replace [tex]b[/tex] by -4 and [tex]x[/tex] by -2 and solve for [tex]a[/tex] using the following equation as:

[tex]x=\frac{-b}{2a}\\-2=\frac{-(-4)}{2a}\\-2(2)a=4\\-4a=4\\a=-1[/tex]

It means that the equation of the parabola is equal to:

[tex]y=-1x^{2}-4x+3[/tex]

Answer:

Explanation:

1. Model the situation with a system of equations

a) Name the variables:

b) Number of burgers:

c) Cost of the 50 burgers:

2. Solve that system of equations:

a) System

b) Mutliply the first equation by 2 and subtract the second equation

c) How much would you spend if the next year you buy the double of 20 turkey burgers (40) and the half of 30 veggie burgers (15)

Then, you if you double the number of turkey burgers, and cut the number burgers in half, you would spend more than $90 ($102.50).

Answer:

336 plants

Step-by-step explanation:

To find the number of tickseed plants that Michael needs to plant in his garden, we have to find the area of the garden first.

We notice that the garden has the shape of a right triangle: so, we have to find the area of the right triangle.

The area of a triangle is given by the formula

[tex]A=\frac{1}{2}bh[/tex]

where

A is the area

b is the length of the base

h is the height of the triangle

From the figure, we see that:

b = 7 m is the length of the base

h = 24 m is the height of the triangle

Therefore, applying the formula, we find the area of the garden:

[tex]A=\frac{1}{2}7\cdot 24 =84 m^2[/tex]

We also know that Michael wants to plant 4 tickseed plants for each square meter of area; therefore, the total number of plants that Michael will plant is 4 times the area of the garden, so:

[tex]N=4A=4\cdot 84=336[/tex]

Answer:

336 tickseed plants

Step-by-step explanation:

Answer:

(x + 3)(3x - 10)

Step-by-step explanation:

[tex]3 {x}^{2} - x - 30 \\ = 3 {x}^{2} + 9x - 10x - 30 \\ = 3x(x + 3) - 10(x + 3) \\ = (x + 3)(3x - 10) \: are \: the \: required \: factors.[/tex]

To factor the expression [tex]3x^2-x-30[/tex], use factoring by grouping. The factored form is (3x + 3)(x - 10).

To factor the expression [tex]3x^2-x-30[/tex], we can use factoring by grouping or the quadratic formula. Let's use factoring by grouping:

Step 1: Multiply the leading coefficient (3) by the constant term (-30) to get -90.

Step 2: Find two numbers whose product is -90 and whose sum is the coefficient of the linear term (-1). In this case, the numbers are -10 and 9.

Step 3: Rewrite the middle term (-x) as the sum of the numbers found in step 2 (-10x + 9x).

Step 4: Group the terms and factor out the greatest common factor from each group (3x(x - 10) + 3(x - 10)).

Step 5: Factor out the common binomial (x - 10) from each group to get the final factored form: (3x + 3)(x - 10).

Answer:

D, 1/30

Step-by-step explanation:

There are 2 crust types, 3 cheeses, and 5 toppings.

That means there are 2*3*5 total pizzas, which is 30.

You are asking for the probability of choosing one of those pizzas, meaning the answer is D, 1/30

Answer:

73 ≥ 35+.19 m

Answer:

the answer is 200 miles per day

Answer:

Step-by-step explanation:

if he eats half a cookie each day then they cookies will last 24 days.

Answer:

166

Step-by-step explanation:

Answer:

Step-by-step explanation:

I mean I'm not sure if I'm right but if the third one just went to every third coffin and so on then he technically didn't open any which makes them all closed. I'm not sure if I'm right tho.

Answer:

The point (56, 1.75) is on the line.

Step-by-step explanation:

Given two points, we can get the slope (m) as follows:

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

where (x1, y1) and (x2, y2) are the points. Replacing with (8, 0.25) and (16, 0.5):

m = (0.5 - 0.25)/(16 - 8) = 0.03125

The point-slope form of a line is:

y - y1 = m(x - x1)

Replacing with data:

y - 0.25 = 0.03125(x - 8)

To know if point (56, 1.75) is on the line, we have to replace x = 56 in the obtained equation and check y-value, as follows:

y - 0.25 = 0.03125(56 - 8)

y - 0.25 = 1.5

y = 1.5 + 0.25 = 1.75

Then, the point is on the line. This means that there are 56 ounces in 1.75 quarts.

Answer:

b

Step-by-step explanation:

hope it helps

Answer:

Tina is first

Tony is first

Theo is first

Step-by-step explanation:

Events with greater probability are more likely.

Let's put the probabilities in decimal form.

P(Tina is first) = 0.05

P(Theo is first) = %85 = 0.85

P(Tony is first) = 1/10 = 0.1

0.05 < 0.1 < 0.85

The events are listed below from least to most likely.

Tina is first, Tony is first, Theo is first

hope it helps

Answer:

Tina is first  

Tony is first

Theo is first

Step-by-step explanation:

Answer:

a and c

Step-by-step explanation:

The first one is 3/6 = 50%

The second one is 3/8 = 37.5%

The third one is 2/4 = 50%

The fourth one is 5/8 = 62.5%

The ones with the same percent shaded are the first and third

Answer:

a and c

Step-by-step explanation:

A has 3 out of a total of 6 shaded, and that would be 3/6. 3/6 simplifies into 1/2 which is also 50%. Same with c. 2 out of four pieces are shaded, 2/4. 2/4 becomes 1/2 which is also 50%.

Answer:

3/4

Step-by-step explanation:

The solution of expression 4c = 3 by combining like terms is c = 3/4.

Used the concept of the equation that states,

An equation is a group of numerical variables and functions that have been combined using operations like addition, subtraction, multiplication, and division.

Given that the equation is,

4c = 3

Now simplify the equation by combining like terms,

4c = 3

Divide both sides by 4,

4c/4 = 3/4

c = 3/4

Therefore, the solution is c = 3/4.

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Answer:

no lose yo ablo español