Someone please help me with this qiesrion pls

The solution of the equations are

x^2 - 36 = 0

x = 6, -6

The equation x2 + 12x + 36 = 0

x = -6, -6

The equation x^2 - 36 = 0 is solved as follows

x^2 - 36 = 0

x = ±√36

x = 6 or -6

The quadratic equation x^2 + 12x + 36 = 0 is solved as follows

x^2 + 6x + 6x + 36 = 0

x(x + 6) + 6(x + 6) = 0

(x + 6)(x + 6) = 0

hence

x = -6 and -6

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The function graphed above is:

Increasing on interval: (-3 0.5),

Decreasing on interval(s): (-∞ -3) and (0.5 ∞)

What is decreasing and increasing interval?

Real number intervals with growing and decreasing real-valued functions are referred to as increasing and decreasing intervals.

We apply the first-order derivative test to examine the sign of the derivative in each interval and identify the growing and decreasing intervals.

For the graph attached, the decreasing interval is

from negative infinity to -3 and

0.5 to positive infinity

While the increasing interval is from -3 to 0.5

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=9/2

According to me when you simplify these numbers on the calculator it gave me 9/2.

Problem: (3/2) + (3/2) + (3/2) = unknown value, times  (1/2)

Solution:

First, we can simplify the left side by adding the fractions:

(3/2) + (3/2) + (3/2) = 9/2

Next, we can divide both sides by (1/2) to solve for the unknown value:

(9/2) ÷ (1/2) = 9

Therefore, the answer is 9.

Answer:

24 inch cubes are needed to fill the bottom layer of the prism.

The required measure of the unknown side in similar triangles is 4.

Similar triangles are two triangles that have the same shape but are not necessarily the same size. More specifically, two triangles are similar if their corresponding angles are congruent (i.e., have the same measure), and the corresponding sides are proportional (i.e., have the same ratio).

Here,
Two similar triangles are given in the figure,

Let the unknown side be x
For a similar triangle, the ratio of the corresponding sides are equal So,
a / 8 = 6 / 12
a = 8/2
a = 4

Thus, the required measure of the unknown side in similar triangles is 4.

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a) The null hypothesis is that there is no difference in the proportion of homeowners using water filters among the three communities. The alternative hypothesis is that at least one community has a different proportion of homeowners using water filters than the other communities.

b) To calculate the expected count for the bottom right cell, we can use the formula:

Expected count = (row total x column total) / grand total

The row total for Community C and the column total for No are both 100, and the grand total is 300. Therefore:

Expected count = (100 x 100) / 300 = 33.33

The expected count of 33.33 for the bottom right cell means that if there were no difference in the proportions of homeowners using water filters among the three communities, we would expect 33.33 of the 100 homeowners in Community C to answer 'No' to the question about water filters.

c) To determine what we can conclude from the Chi-square statistic of 13.22, we need to compare it to the critical value for a Chi-square distribution with (3-1) x (2-1) = 2 degrees of freedom at the desired level of significance. Let's assume a level of significance of 0.05. From a Chi-square distribution table, the critical value with 2 degrees of freedom at 0.05 level of significance is 5.99.

Since 13.22 is greater than 5.99, we can reject the null hypothesis and conclude that there is a significant difference in the proportion of homeowners using water filters among the three communities. However, we cannot determine from this test alone which communities have different proportions of homeowners using water filters. We would need to conduct further tests, such as post-hoc tests, to investigate the specific differences among the communities.

Answer:

There are 17 chickens and 23 cows

Step-by-step explanation:

Assuming every chicken has 1 head and 2 legs and every cow has 1 head and 4 legs, let us set up a system of equations for this proble

Let
x = number of chickens
y = number of cows

x chickens will have x heads
y cows will have y heads

Total number of heads = x + y = 40

x chickens will have 2x legs
y cows will have 4y legs
Total legs = 2x + 4y = 126

We have two equations:

x + y = 40       (1)

2x + 4y = 126  (2)

Multiply: (1) x 2
=> 2(x + y) = 2(40)
=> 2x + 2y = 80  (3)

Subtract: (2) - (3)

2x + 4y - (2x + 2y) = 126 - 80

2x + 4y -2x - 2y = 46

4y - 2y = 46

2y = 46

y = 23

Since y = 23 and x + y = 40
x + 23 = 40
x = 40 - 23 = 17

There are 17 chickens and 23 cows

Answer:

Step-by-step explanation:

To represent the number of eighth-grade students, we can use the expression:

0.8s

This is because the problem states that there are 20% fewer students in the eighth grade than in the seventh grade, which means that the number of eighth-grade students is equal to 80% of the number of seventh-grade students.

To simplify this expression, we can use the distributive property:

0.8s = 1s - 0.2s

This shows that the number of eighth-grade students is equal to the number of seventh-grade students minus 20% of the number of seventh-grade students. We can further simplify this to:

0.8s = 0.8s

This means that the number of eighth-grade students is equal to 80% of the number of seventh-grade students, which is consistent with the original problem statement.

Answer:

R

Step-by-step explanation:

-1 is exactly between 0 and -2, meaning that the answer is R.

R is the right answer

Answer:$728

Step-by-step explanation: 4 percent increase= 104% which is x1.04

=700*1.04  

The height of the triangle is h = 2A/6.

Height is the measure of vertical distance, either how "tall" something or someone is, or how "high" the point is. For example, a person's height is typically measured using a stadiometer and is recorded in centimeters or feet and inches. The height of a mountain is usually measured in meters or feet. In aviation, height is measured from the surface of the earth, either above ground level (AGL) or above mean sea level (AMSL).


To find the height of a right triangle given the base, we can use the area formula A = 1/2bh. Rearranging this equation gives us the height: h = 2A/b. In this case, the base is 6 inches and the area is given as A. Therefore, the height of the triangle is h = 2A/6.

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Answer:

Step-by-step explanation:

Answer: Obtuse Triangle

Step-by-step explanation:

63 + 22 = 85

180 - 85 = 95

Since the unknown angle is over 90 degrees, it is an obtuse triangle.

Answer:

No

Step-by-step explanation:

Btw, you know this using Pythagorean therom

10^2 equals 100 and you have two 10's so now you have 200

18^2 equals 324

And because even in a straight line 200 is not long enough for the 324 so it would not fit.

Hope this helps, Brainliest would also help me btw

Step-by-step explanation:

clearly, the price is marked down to $9.60.

so, the 1st and 4th answer options are wrong.

is it marked down by 12% or by 20% ?

the basic price was $12. = 100%

how much are 10% of that ? well, 12/10 = $1.20.

but we marked down by $2.40.

when you compare $1.20 and $2.40, what do to see ?

that the second number is exactly twice the first number.

10%×2 = 20%

therefore, the 3rd answer is correct.

The volume of each tile is 134 cm³.

The volume of a cuboid is the amount of space it occupies in three-dimensional space. A cuboid is a three-dimensional geometric shape with six rectangular faces, where each face has perpendicular edges to two other adjacent faces. The formula for calculating the volume of a cuboid is V = l x w x h, where V is the volume, l is the length of the cuboid, w is the width of the cuboid, and h is the height of the cuboid.

To calculate the volume of a cuboid, first measure its length, width, and height. Then, multiply the length by the width and the height, and then multiply the result by the height again. This gives the volume of the cuboid in cubic units, such as cubic inches, cubic centimeters, or cubic meters.

For example, if a cuboid has a length of 5 cm, a width of 3 cm, and a height of 2 cm, the volume can be calculated as follows:

V = l x w x h

V = 5 cm x 3 cm x 2 cm

V = 30 cubic centimeters

Therefore, the volume of the cuboid is 30 cubic centimeters.

The volume of each tile can be calculated by multiplying its length, width, and height:

Volume = 10 cm × 20 cm × 0.67 cm = 134 cm³

Therefore, the volume of each tile is 134 cm³.

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Answer: one

Step-by-step explanation:

Answer: I am in high school so this may not be the best answer, but I would say that eventually eye sight would simply become useless to the fish because they live in a cave and don’t really need to see, there for I would say that the second answer is correct.

Answer:

f = 648

Step-by-step explanation:

[tex]\frac{f}{24} =27[/tex]

Multiply both sides by 24

[tex]f=648[/tex]

Casey's number is given as follows:

36.

Considering periodic events, they will repeat on the same day for the least common factor of the periods of each event.

The periods are given as follows:

The least common factor of 4 and 6 is obtained as follows:

4 - 6|2

2 - 3|2

1 - 3|3

1

Hence:

lcm(2,3) = 2² x 3 = 12.

This means that one in 12 customers receive both the free cookie and the free muffin. Casey is the third customer to receive both of them, hence the number is given as follows:

3 x 12 = 36.

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The equation of the line that models the cost of renting a kayak in slope-intercept form is: y = 5x + 10

The slope and y-intercept of the line that predicts the price of renting a kayak must be identified in order to formulate the equation for the line.

We can observe from the provided graph that the line traverses points (0, 10) and (6, 40). We may determine the slope of the line using these two points:

Slope = (Y Change/X Change) = (40 - 10)/(6 - 0) = 30/6 = 5

The equation of a line can also be expressed in the slope-intercept form, which is as follows:

y = mx + b

where m denotes the line's slope and b its y-intercept.

The slope of the line is previously known to be 5. One of the points the line passes through can be used to determine the y-intercept, for instance (0, 10). When we enter these numbers into the equation, we obtain:

10 = 5(0) + b

If we simplify, we get:

b = 10

Thus, the slope-intercept form equation of the line that represents the cost of renting a kayak is as follows:

y = 5x + 10

where x represents the duration of the kayak rental and y represents the entire cost.

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Difference of density per acre of wheat and corn = 105

Division is the process of splitting a number or an amount into equal parts. Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.

here, we have,

Given:

Yield in 110 acre farm = 17,600 Bushes of corn

Yield in 250 acre farm = 13,750 Bushes of wheat

Find:

Difference of density per acre of wheat and corn

Computation:

Yield per acres Bushes of corn = 17,600 / 110

Yield per acres Bushes of corn = 160

Yield per acres Bushes of wheat = 13,750 / 250

Yield per acres Bushes of wheat = 55

Difference of density per acre of wheat and corn = Yield per acres Bushes of corn - Yield per acres Bushes of wheat

Difference of density per acre of wheat and corn = 160 - 55

Difference of density per acre of wheat and corn = 105

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Answer:

Step-by-step explanation:

(2x + 3)(3x - 2) + (3 - 4x)(2x + 3) - 4x² + 9     FOIL the first and second set of parentheses.

6x² - 4x + 9x - 6 + 6x + 9 - 8x² - 12x - 4x² + 9   Combine like terms

-6x² - x + 12     Factor.

(-3x + 4)(2x + 3)

It is found that the distance between the two memorials is of 1,42 miles.

The distance between two points (x1 , y1) and (x2 , y2) is of:

Distance formula = [tex]\sqrt{(x2-x1)^{2} +(y2-y1)^{2} }[/tex]

One memorial is at point (3,-1).

The other is at point (7, -5).

Thus, in the coordinate grid, the distance is of:

D = 5.66

In the coordinate, the distance is of 5.66 units. Each unit is worth 0.25 miles, thus:

D = 5.66 units

The distance between the two parks is of 1.42 miles.

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Answer:

y = 4x + 3

Step-by-step explanation:

See picture below :)

The area of the triangular sail in the sail model is 42 square inches.

The area of a triangular sail is given by the formula:

Area = (1/2)bh

where b is the length of the base and h is the height.

Substituting b = 12 inches and h = 7 inches, we get:

Area = (1/2)(12 inches)(7 inches) = 42 square inches

Therefore, the area of the triangular sail in the sail model is 42 square inches.

The area of a triangle is given by the formula:

Area = (1/2) * base * height

where "base" is the length of the base of the triangle and "height" is the height of the triangle perpendicular to the base.

To find the area of a triangle, you simply need to plug in the values of the base and height into the formula and perform the calculation. The resulting value will be the area of the triangle.

Note that the base and height of the triangle must be measured in the same units (e.g., inches, centimeters) in order for the formula to work correctly.

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Answer:

24

Step-by-step explanation:

N/A

Answer: 3.14 ft

Step-by-step explanation:

★Given,→ Diameter = 2 feet → Circumference = 2/2 = 1 feet

★Now,→Area of a circle = πr²→ = 3.14 × 1 × 1→ = 3.14 feet

Hence , the circumference is 3.14 ft.  

Answer:

r≈0.56m

Step-by-step explanation:

C=2πr

r=C

2π=3.5

2·π≈0.55704m