PLS HELP PLS ITS TIMES ILL GIVEBRAINLIEST IF CORRECT HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!

The correct answer for equation is x = π/2 and x = 3π/2.

To solve the equation \(cos^2(x) + 4cos(x) = 0\), we can factor out cos(x):

cos(x)(cos(x) + 4) = 0

Now we set each factor equal to zero and solve for x:

Setting each factor equal to zero, we find:

cos(x) = 0

x = π/2 and x = 3π/2

cos(x) + 4 = 0

cos(x) = -4 (which is not possible since the range of cosine is -1 to 1)

There are no solutions for this equation.

Therefore, the correct answer is x = π/2 and x = 3π/2. These values satisfy the original equation and fall within the given interval of 0 ≤ x < 2π.

Learn more about trigonometric equations

brainly.com/question/31653961

#SPJ11

The length of the rectangle is 19 cm.

The formula for the area of a rectangle,

Area = Length x Width

Given that the area is 336 cm squared.

So, we can set up an equation,

⇒ 336 = (w + 5)w

where w represents the width of the rectangle.

Expanding this equation,

⇒ 336 = w² + 5w

Moving all terms to one side:

⇒ w² + 5w - 336 = 0

This is a quadratic equation that we can solve using the quadratic formula,

⇒ w = (-5 ± √(5² - 4(1)(-336))) / (2(1))

⇒ w = (-5 ± 23) / 2

We'll take the positive value,

⇒ w = 14

So, the width of the rectangle is 14 cm.

We also know that the length is 5 cm more than the width,

Therefore,

⇒ l = w + 5

⇒ l = 14 + 5

⇒ l = 19

Therefore, the length of the rectangle is 19 cm.

Learn more about the rectangle visit:

https://brainly.com/question/2607596

#SPJ12

Answer:

b.125 is the answer because look at the 90 degree and the angle bod it is 35° measure it with protector and add 90° of doe and the sum of 90 and 35 is 125°

Answer:

is 2×3=6x & 2×-5= -10y

so answer is 6x-10y

Answer:

2.4 km.

Let's see the 3 km as metres:

1 km = 1000 m

3 km = ?

1000 × 3 = 3000 m

How many metres is 1 minute:

25 minutes = 3000 m

1 minute = ?

3000 ÷ 25 = 120 m

How many metres is 20 minutes:

1 minute = 120 m

20 minutes = ?

120 × 20 = 2,400 m

Turn it to km:

1000 m = 1 km

2,400 m = ?

2,400 ÷ 1000 = 2.4 km.

The answer is 2.4 km.

Answer:

V = 432pi cm^3

Step-by-step explanation:

Pi x r^2 x h

Pi x 6^2 x 12 cm = 432 pi cm^3

When function f(x) = x^3 + 1 compared to its parent f(x) = x^3, it shifted left by 1 unit.

According to the question, given that

function f(x) = x³ + 1 , compare to the parent function f(x) = x³

when function f(x) = x³ + 1  comparing to the parent function f(x) = x³

then shifted left 1 unit.

graph of the function given below

In mathematics, some graphs are frequently seen. As a result, these initial, widespread functions—which also comprise graphs of quadratic functions, square roots, absolute values, cubic, and cube roots—are referred to as parent graphs.

quadratic function graphing

The utmost power or square to which an unknown number or variable can be raised is known as a quadratic function. The parent graph of all other quadratic functions is the function y=x2 or f(x) = x2, which is a quadratic function.

A parabola is the name for any quadratic function's graph. The fundamental shape of a parabola is uniform.

To learn more about parent graphs visit here : brainly.com/question/12790500

#SPJ1

Answer:

Side RP

Step-by-step explanation:

so you see the dashes on the sides that means theyre equal so...

Side LM has one dash and Side RP has one dash so they are corresponding

Answer:

9 + 1.35 + one-half (3.50 + 1.74)

Step-by-step explanation:

Sally pay

9 - adult ticket

1.35 - drink

1/2 ( 3.50 popcorn + 1.74 veggie cup)

= 9 + 1.35 + 1/2(3.50 +1.74)

Answer:

-10

Step-by-step explanation:

The rate of change is also known as the slope of the function thus the slope will be -600.

A slope is a tangent or angle at a point and a slope is the intensity of inclination of any geometrical lines.

Slope = Tanx where x will be the angle from the positive x-axis at that point.

The slope is also calculated by differentiation for example slope of y = sinx will be y' = cosx.

As per the given,

Bacteria are dying at a constant rate of $600$ an hour.

The rate of change = -600/hour

Slope = y/x = number of bacteria change/time taken

If the graph is a straight line then it will remain constant.

Slope = -600

Hence "The rate of change is also known as the slope of the function thus the slope will be -600".

To learn more about slopes,

https://brainly.com/question/3605446

#SPJ2

8x^5\left(32\sqrt{2}x^2-\sqrt{2}x^4\right)

Answer:

the answer is B.FALSE

Step-by-step explanation:

hope it helps

Answer:

Step-by-step explanation:

1)

\(sinh(x)=-2\\\\\dfrac{e^x-e^{-x}}{2} =-2\\\\e^{2x}-1=-4e^x\\\\(e^x)^2+4e^x-1=0\\\\\Delta=16+4=20\\\\e^x=\dfrac{-4-\sqrt{5} }{2} \ (exclude) \ or\ e^x=-2+\sqrt{5} \approx{0,236067977...}\\\\x=ln(-2+\sqrt{5} ) \approx{-1,443635475178...}\\\\\)

2)

\(sinh(x)=\dfrac{7}{2} \\\\\dfrac{e^x-e^{-x}}{2} =\dfrac{7}{2} \\\\e^{2x}-1=7e^x\\\\(e^x)^2-7e^x-1=0\\\\\Delta=49+4=53\\\\e^x=\dfrac{7-\sqrt{53} }{2} \ (exclude) \ or\ e^x=\dfrac{7+\sqrt{53}}{2} \approx{7,1400549...}\\\\x=ln(7+\sqrt{53} ) \approx{1,96572...}\\\\\)

So, the equation we could use to find Jeremy's age, j, if he is the younger man, is: j = x + 2, where x satisfies the equation x(x + 2) = 783.

An equation is a mathematical statement that asserts the equality of two expressions. In an equation, an expression is written on the left side of an equals sign (=), and another expression is written on the right side of the equals sign. The equals sign indicates that the two expressions have the same value.

Here,

Let's use algebra to solve this problem. We can start by representing Sam's age as x and Jeremy's age as x + 2, since they are consecutive odd integers. We know that the product of their ages is 783, so we can set up the following equation:

x(x + 2) = 783

We can simplify this equation by multiplying out the left side:

x² + 2x = 783

Now we have a quadratic equation in standard form. We can solve for x by using the quadratic formula:

x = (-b ± √(b² - 4ac)) / 2a

In this case, a = 1, b = 2, and c = -783, so we can substitute these values into the formula:

x = (-2 ± √(2² - 4(1)(-783))) / 2(1)

Simplifying the expression under the square root, we get:

x = (-2 ± √(3136)) / 2

x = (-2 ± 56) / 2

So, we have two possible values for x:

x = 27 or x = -29

We can reject the negative value, since it does not make sense in the context of the problem. Therefore, we have:

x = 27

Now we can use this value to find Jeremy's age, which is x + 2:

j = x + 2

= 27 + 2

= 29

To know more about equation,

https://brainly.com/question/28243079

#SPJ1

Answer:

-21

Step-by-step explanation:

the formula is y=mx+b

m is the slope and b is the y-intercept

here, for the y value, there's -21 so the y-intercept is -21

hope this helps

Answer:

5 letters

Step-by-step explanation:

let x = # of packages

x+2 = # of letters

$0.37(x+2) + $0.88x = $4.49

.37x + .74 + .88x = 4.493

1.25x + .74 = 4.49

1.25x = 3.75

x = 3.75/1.25 = 3 = # of packages

# of letters = x+2 = 3+2 = 5

The radius of the circle is equal to 5.7 cm to nearest tenth.

To calculate the circumference of a circle, you can use the formula:

Circumference = 2 × π × radius

where π (pi) is a constant equal to 22/7 or approximately 3.14, and the radius is the distance from the center of the circle to any point on its edge.

36 cm = 2πr

36 cm = 2 × 22/7 × radius

radius = (36cm × 7)/44 {cross multiplication}

radius = 252cm/44

radius = 5.7273 cm

Therefore, the radius of the circle is equal to 5.7 cm to nearest tenth.

Read more about radius here:https://brainly.com/question/20489969

#SPJ1

The correct height is 13.3 feet.

To solve 33 = h + 3, Michaela used subtraction instead of addition.

a.
The correct height of the rectangle can be found by dividing the area by the length of the base:

height = area/base

= 40 / 3

= 13.33 feet

b.

Michaela's error is that she claimed the height to be 133 feet, which is way too large and unrealistic.

It seems like she made a mistake in her calculation and likely used addition instead of division.

Therefore,

The correct height is 13.3 feet.

To solve 33 = h + 3, Michaela used subtraction instead of addition.

Learn more about rectangles here:

https://brainly.com/question/15019502

#SPJ1

Answer:

number 4 is right

To find the equation of the tangent plane to the surface z = ln(x - 7y) at the point (8, 1, 0), we need to determine the partial derivatives of z with respect to x and y at that point.

First, let's find the partial derivative ∂z/∂x:

∂z/∂x = 1/(x - 7y)

Next, let's find the partial derivative ∂z/∂y:

∂z/∂y = -7/(x - 7y)

Now, let's evaluate these partial derivatives at the point (8, 1, 0):

∂z/∂x = 1/(8 - 7(1)) = 1/(8 - 7) = 1

∂z/∂y = -7/(8 - 7(1)) = -7/(8 - 7) = -7

At the point (8, 1, 0), the partial derivatives are ∂z/∂x = 1 and ∂z/∂y = -7.

The equation of a plane can be expressed as:

z - z0 = (∂z/∂x)(x - x0) + (∂z/∂y)(y - y0)

Using the values we calculated:

z - 0 = 1(x - 8) + (-7)(y - 1)

Simplifying, we get:

z = x - 8 - 7y + 7

Rearranging terms, the equation of the tangent plane to the surface at the point (8, 1, 0) is:

z = x - 7y - 1

Learn more about Tangent here -: brainly.com/question/26153770

#SPJ11

The z-score for P(? ≤ z ≤ ?) = 0.60 is approximately 0.25.

The z-score for P(z ≥ ?) = 0.30 is approximately -0.52.

How to find the Z score

P(Z ≤ z) = 0.60

We can use a standard normal distribution table or a calculator to find that the z-score corresponding to a cumulative probability of 0.60 is approximately 0.25.

Therefore, the z-score for P(? ≤ z ≤ ?) = 0.60 is approximately 0.25.

For the second question:

We want to find the z-score such that the area under the standard normal distribution curve to the right of z is 0.30. In other words:

P(Z ≥ z) = 0.30

Using a standard normal distribution table or calculator, we can find that the z-score corresponding to a cumulative probability of 0.30 is approximately -0.52 (since we want the area to the right of z, we take the negative of the z-score).

Therefore, the z-score for P(z ≥ ?) = 0.30 is approximately -0.52.

Read more on Z score here: brainly.com/question/25638875

#SPJ1

Answer:

yes

Step-by-step explanation:

Answer:

It is rational

Step-by-step explanation:

1.52 = 1 + 52/100 = 152/100 which is rational, because it can be expressed as a fraction

The length of the shorter leg of the triangle ABC is approximately 24.49 units. Let's denote the right triangle ABC, where C is the right angle.

Let D be the midpoint of AB, and E be the foot of the altitude from C to AB. Then we have:

CD = 1/2 AB (definition of median)

CE = 12 (given altitude to the hypotenuse)

Let x be the length of the shorter leg of the triangle ABC. Then we have:

AE = x (definition of altitude)

EB = AB - x (definition of complementary leg)

By the Pythagorean theorem, we have:

AC^2 = AB^2 + BC^2

(2CD)^2 = AB^2 + x^2

AB^2 = 4CD^2 - x^2

By the similarity of triangles AEC and ABC, we have:

CE/AC = AE/AB

12 / (AB + BC) = x / AB

AB = x / (12/x + 1)

Substituting AB into the previous equation, we get:

4CD^2 - x^2 = x^2 / (12/x + 1)^2

Simplifying and solving for x, we get:

x^4 - 576x^2 - 14400 = 0

This is a quadratic equation in x^2, so we can solve for it using the quadratic formula:

x^2 = [576 ± sqrt(576^2 + 4*14400)] / 2

x^2 = [576 ± 624] / 2

Since x is a length, we take the positive square root:

x^2 = 600

x ≈ 24.49

Therefore, the length of the shorter leg of the triangle ABC is approximately 24.49 units.

Learn more about triangle here:

https://brainly.com/question/2773823

#SPJ11

Answer:

54 ft

Step-by-step explanation:

Add all the side lengths ; 18+18+18 = 54.

The total number of hours spent on reading in a week is 14/3 hours.

For the given question-

Number of hours spent of reading = 2/3 hours.

Total number of days in a week = 7.

Total number of hours spent on reading = 2/3 x 7

Total number of hours spent on reading = 14/3

Thus, the total number of hours spent on reading in a week is 14/3 hours.

To know more about the fraction of a number, here

https://brainly.com/question/21336203

#SPJ4

Answer:

Q1: 5, 5 SAS

Step-by-step explanation:

Q2: 10 sas

Q3:13 sss

Q4: 10 sss

Q5: 35 sas

Answer:

8.533333

Step-by-step explanation:

9^(− 1/ 2 )+25− 1 2 +32^ (3/ 5) = 9 (−1 /2) +25(− 1 /2) +32 ^(3 /5)

=0.333333+25^(− 1/ 2) +32 ^(3 /5)

=0.333333+25 ^(−1 /2) +32 ^(3/ 5)

=0.333333+0.2+32^ (3/ 5)

=0.533333+32 ^(3 /5)

=0.533333+8

=8.533333

Answer:

LETTER A

Step-by-step explanation:

BECAUSE IF YOU DIVIDE THE 250 GRAMS TO 2.7 G/ML THE ANSWER IS 92.59ml

Answer:

A. 92.59 mL

Step-by-step explanation:

Answer:

angle v is 105

Step-by-step explanation:

the triangles are similar, so the angles will be the same so both triangles, the sum of the angles for a triangle must add up to 180 degrees