5x - y - 4z = -16
x + 3y+ z= 5
2x+ 4y - 3z= 1

Answer: 80m

Step-by-step explanation:

What I did was is 3/x=1.67/44.5

I set it up as a proportion, cross multiplied, and divided. you get around 79.9.... so I rounded up to 80. Hope that helped

Answer:

The buildings height was 64.23 (meters) to 2dp

Step-by-step explanation:

This is because the pole shadow = 44.3333% increase to get to 3ft

Seeing that 1.67 was the shadow and beside it the building shows 44.5 we just multiply it by the percentage and to not add one (1) to the decimal to add if not adding or showing what 44.33% becomes.

44.5 x 1.443333 =64.2283185  and sum (add) as its an increase = (44.5 + 19.72831 = 64.2283185) So 19.73 to 2dp is the difference without the 1 used and without being seen.

This is the hidden increase as we just say 44.33% of 44.5 ft But as we used the 1. to represent the x100.

We find 44.33% of 44.5 finds us the buildings exact measure to 2dp = 64.22m

Converted (= 210.72 feet to 2dp)

Hope this helps.

Answer:

343m3,8m3,1000m3 for Perfect squares

300m3,9m3,900m3 for Not-perfect squares

Step-by-step explanation:

Did an assignment on edge

Answer: answer in the picture

Step-by-step explanation:

Answer:

0,32

Step-by-step explanation:

Answer:

equilateral triangle is a triangle with all three sides equal

isosceles triangle is a triangle with two sides of the same length

scalene triangle is a triangle in which no 2 sides have equal lengths

equiangular triangle is a triangle in which all angles are equal

triangle is the union of three segments determined by 3 noncolinear points

Answer:

Equilateral triangle : a triangle in which all three sides have the same length

Isosceles triangle : a triangle in which at least two sides have the same length

Triangle : the union of three segments determined by three non collinear points.

Scalene triangle : a triangle in which no two sides have the same length.

Equiangular triangle : a triangle in which all angles are equal

Answer:

A) 150

Step-by-step explanation:

All the angles in a triangle must add up to a total of 180 degrees.

So we can make an equation as given below:

20+10+?=180

30+?=180

?=150

So the missing angle is 150 degrees

Answer:

150

Step-by-step explanation:

Subtract 20 and 10 to 180 because the side of a triangle(or all three sided figures) is 180 and you get 150

Answer:6

Step-by-step explanation:

18 lengh times 10 width = 180

1,080/ 180 = 6

Answer:

-2/3

Step-by-step explanation:

The slope of a line can be found using the formula change in y coordinate divided by change in x coordinate (rise over run). SO, first you find the difference in y: 3-5 which is equal to -2, then divide it by change in x (2--1 / 2+1 = 3), giving an answer of -2/3.

Answer:

A of each triangular base = 6 in²

A of both bases = 12 in²

Lateral A = 96 in²

Surface area = 108 in²

Step-by-step explanation:

Area of each triangular base

1/2(3)(4) = 1/2(12) = 6

Area of  both bases

6*2 = 12

Lateral Area

(8)(3) + (8)(4) + (8)(5)

24 + 32 + 40

96

Total Surface area

96 + 12 = 108 in²

Answer:

8 Miles

Step-by-step explanation:

Start by creating an equation based off what you know. To start we know it costs $3  just to get a ride + $2 for ever mile we travel (represent this using x)+ the $1 tip we left=$20.

3+2x+1=20

Now you add the like terms together(3+1)

2x+4=20   Subtract the 4 from both sides.

    -4   -4

2x=16       Now you just divide each side by 2

_    _

2    2

x=8

Don't forget your label (miles)

Answer:

.42 or 42%

Step-by-step explanation:

21/50 is equal to .42 which is the decimal answer. To get percent multiply the decimal by 100, and you get 42%.

Answer:

42%

0.42

Step-by-step explanation:

21/50 x2 = 42/100

Answer:

10.3923

Step-by-step explanation:

Answer:

6sqrt3

Step-by-step explanation:

To find the area of a square, we simply square the length of its side!

We can represent the length of the side by x; therefore, the area of the square would be x squared, or x^{2}.

Then, we solve!

x^{2} = 108, so we find the square root of 108.

108 = 2^2 * 3^3

So sqrt{2*2*3*3*3}

We can take the 2^2 and 3^2 out of the square root, so outside, it becomes 2 * 3, or 6.

The 3 is still inside the square root, leaving us with 6sqrt3.

Hope that helps!

Answer:

Option B, -5/4x + 2

Step-by-step explanation:

Step 1:  Combine like terms inside the parenthesis

[tex]1/4(2 - 5x + 6)[/tex]

[tex]1/4(8 - 5x)[/tex]

[tex](1/4 * 8) + (1/4 * -5x)[/tex]

[tex]2 - 5/4x[/tex]

Answer:  Option B, -5/4x + 2

Answer:

1781.29

Sorry, no explanations

Answer:

V= 1781.3

Step-by-step explanation:

That’s the correct answer.

Answer:

W=t-30

Step-by-step explanation:

If t is Monday, and Wednesday is W, then T- 30 is saying 30 less then T

Answer:

30[tex]\sqrt{2}[/tex]

Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

The dimensions of the canvas would be approximately 11 inches by 7 inches.

To determine the dimensions of the canvas, we need to find the side lengths of the golden rectangle. A golden rectangle is a rectangle in which the length is approximately 1.618 times the width. The formula for the area of a rectangle is length multiplied by width. Given that the area of the canvas is 108 square inches, we can set up the equation: length x width = 108. Using the golden ratio, we can express the length in terms of the width as length = 1.618 x width.

Substituting this expression for length in the equation, we get (1.618 x width) x width = 108. Solving for the width, we find width ≈ 6.68 inches. Rounding this to the nearest inch, the width is 7 inches. Substituting this value back into the expression for length gives us length ≈ 11.31 inches, which rounds to 11 inches.

Therefore, the dimensions of the canvas are approximately 11 inches by 7 inches. The correct answer choice is a. 17 x 11.

https://brainly.com/question/27298717

#SPJ2

Answer:

1/12

Step-by-step explanation:

8 blue marbles

15 red marbles

10 yellow marbles

3 brown marbles

So let's add them up

8+15+10+3

=36

Probability of picking brown marbles

3/36

Divide both by 3

1/12

So the probability of picking brown is 1/12

Answer:

Factor 6 out of the variable terms.

Step-by-step explanation:

6x^2 + 24x + 5 = 0

6x^2 + 24x = –5

Factor out the 6 on the left hand side

6 (x^2 +4x) = -5

Answer:

FACTOR IS 6

Step-by-step explanation:

Answer:

8.6 but im not sure.

Step-by-step explanation:

5 squared + 7 squared = 74 square root = 8.6

We have to find what "x" is greater than and less than.

(7-5)<x<(5+7) = 2 < x < 12

To be able to form a triangle, the sides can't be too small or big.

To find "x", use the formula above.

Final answer:

The hypothesis test in question is a left-tailed test based on the claim that less than 8% of the subjects would experience headaches. With a z-value of 0.233126 and a stated significance level of 0.01, the D-value of 0.592168 suggests that there is not enough evidence to reject the null hypothesis.

Explanation:

When analyzing the clinical trial data for a drug used to treat asthma, we consider the provided information regarding the subjects experiencing headaches. With 21 out of 250 subjects reporting headaches, and a claim that less than 8% would experience this side effect, we set up a hypothesis test to determine if the claim holds at a 0.01 significance level. Given that the alternative hypothesis is prop < 0.08, which strictly tests for proportions lower than 8%, this is a left-tailed test.

The test statistic provided is a z-value of 0.233126, and the decision value (D-value) is 0.592168. Since the significance level is 0.01 and the test is left-tailed, we check if the z-value falls into the critical region defined by the significance level. If the z-value corresponds to a p-value lower than 0.01, we would reject the null hypothesis. Otherwise, we would fail to reject the null hypothesis.

In the context of large-sample hypothesis tests, as noted in a paragraph mentioning that 'the large-sample 1 - PropZTest provides the approximate p-value', when the p-value from the normal approximation is close to the level of significance, the exact p-value should be calculated using binomial probabilities. However, because the statistical calculator has provided a D-value (which relates to the p-value) significantly greater than the 0.01 significance level, we have sufficient evidence to fail to reject the null hypothesis, implying that there is not enough evidence to support the claim that less than 8% of treated subjects experienced headaches.

Answer:

clockwise and end up in the 3rd quadrant

Step-by-step explanation:

That's how you're supposed to graph angles. Also, 180<210<270, which are the parameters for the 3rd quadrant

In the coordinate plane, when you graph a positive 210  degrees angle you go option (C) counter-clockwise and end up in the 3rd quadrant

A coordinate plane is a tool used for graphing points, lines, and other objects. It functions like a map that follows directions from one point to another.

A figure which is formed by two rays or lines that shares a common endpoint is called an angle

Given,

We have to plot a positive 210 degree angle

So the movement will be in counter clockwise direction and angle 210 degrees in the third quadrant

Therefore when you graph positive 210 degrees you go in counterclockwise direction and end up in the 3rd quadrant

Hence, In the coordinate plane, when you graph a positive 210  degrees angle you go option (C) counter-clockwise and end up in the 3rd quadrant

Learn more about Coordinate Plane and angle here

https://brainly.com/question/16158812

#SPJ2

Answer:

-9

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

You can think of the negative 1 as a subtraction. What you do is ignore the negative 1, take the 8 and then subtract 1 from it.

-1+8 to 8-1

The SAME thing!

Answer:

yes  it is when you have in exponent you have to solve for example

3+2[tex]x^{2}[/tex]= 3+2x2=7

Please please please mark me brainliest

Step-by-step explanation:

Answer:Exponential functions follow all the rules of functions. However, because they also make up their own unique family, they have their own subset of rules. The following list outlines some basic rules that apply to exponential functions

Step-by-step explanation:The parent exponential function f(x) = bx always has a horizontal asymptote at y = 0, except when b = 1. You can’t raise a positive number to any power and get 0 or a negative number.

This rule is true because you can raise a positive number to any power. However, the range of exponential functions reflects that all exponential functions have horizontal asymptotes. All parent exponential functions (except when b = 1) have ranges greater than 0, or

The order of operations still governs how you act on the function. When the idea of a vertical transformation applies to an exponential function, most people take the order of operations and throw it out the window. Avoid this mistake.

You can’t multiply before you deal with the exponent.

You can’t have a base that’s negative. For example, y = (–2)x isn’t an equation you have to worry about graphing in pre-calculus. If you’re asked to graph y = –2x, don’t fret. You read this as “the opposite of 2 to the x,” which means that (remember the order of operations) you raise 2 to the power first and then multiply by –1. This simple change flips the graph upside down and changes its range to

A number with a negative exponent is the reciprocal of the number to the corresponding positive exponent. For instance, y = 2–3 doesn’t equal (–2)3 or –23. Raising any number to a negative power takes the reciprocal of the number to the positive power

When you multiply monomials with exponents, you add the exponents. F

When you have multiple factors inside parentheses raised to a power, you raise every single term to that power. For instance, (4x3y5)2 isn’t 4x3y10; it’s 16x6y10.

When graphing an exponential function, remember that the graph of an exponential function whose base number is greater than 1 always increases (or rises) as it moves to the right; as the graph moves to the left, it always approaches 0 but never actually get there. For example, f(x) = 2x is an exponential function, as is

The table shows the x and y values of these exponential functions. These parent functions illustrate that, as long as the exponent is positive, the graph of an exponential function whose base is greater than 1 increases as x increases — an example of exponential growth — whereas the graph of an exponential function whose base is between 0 and 1 decreases towards the x-axis as x increases — an example of exponential decay.

The graph of an exponential function who base numbers is fractions between 0 and 1 always rise to the left and approach 0 to the right. This rule holds true until you start to transform the parent graphs.

Answer: slope = 2

Step-by-step explanation:

The formula for calculating slope is given as :

[tex]m = \frac{y_{2}-y_{1}}{x_{2}-x_{1} }[/tex]

[tex]x_{1}=2[/tex]

[tex]x_{2}=4[/tex]

[tex]y_{1}=-5[/tex]

[tex]y_{2}=3[/tex]

substituting into the formula , we have :

[tex]m = \frac{3-(-5)}{4-2}[/tex]

[tex]m = \frac{8}{2}[/tex]

[tex]m = 2[/tex]

Therefore : slope = 2

1/4=3/12

2/3=8/12

5/12=375

375/5=75

1/12=75

75*12=900

10/12=5/6

5/6=750

Answer:

750 add and divide and stuff

When the inequality sign is </> (less than/greater than), the dot is an open circle.

When the inequality sign is ≤/≥ (less than or equal to/greater than or equal to), the dot is a closed circle.

y = number that is a solution/makes the inequality true

y ≤ 8      (y is any number less than or equal to 8)

#1:    y = 0 is part of the solution set.

Yes because if you substitute/plug in 0 into "y" in the inequality, since y = 0:

0 ≤ 8         0 is less than 8.

#2:     y = 8 is part of the solution set.

Yes because if you plug it into the inequality:

8 ≤ 8       8 is equal to 8

#3:     y = 10 is part of the solution set.

No because if you plug it into the inequality:

10 ≤ 8         10 is not less than or equal to 8

#4:     There is an open circle on the graph at 8.

No because the inequality sign is ≤, so there should be a closed circle on 8.

#5:      There is a closed circle on the graph at 8.

Yes because the inequality sign is ≤

#6:    The arrow on the graph points left.

Yes because if the arrow is pointing left then the numbers are decreasing, and y is any number less than or equal to 8.

#7:     The arrow on the graph points right.

No because if the arrow is point right then the numbers are increasing, but y is not a number greater than 8.

Your answer is the 1st, 2nd, 5th, and 6th option

To solve the problem first we need to understand the Inequality Signs.

In an inequality sign there is a dot(circle) present, but whether the circle is open or closed depends, upon the inequality sign.

If the inequality sign is less than(<) or greater than(>), the dot is an open circle.

whereas, if the inequality sign is less than or equal to (≤) and greater than or equal to(≥), the dot is a closed circle.

The correct options are A, B, E, and F.

Given statements to us,

A.)   y = 0 is part of the solution set.

B.)   y = 8 is part of the solution set.

C.)  y = 10 is part of the solution set.

D.)   There is an open circle on the graph at 8.

E.)   There is a closed circle on the graph at 8.

F.)   The arrow on the graph points left.

G.)   The arrow on the graph points right.

Solutions

We know that the number line is always decreasing number or negative towards the left while positive towards the right.

Therefore, y≤8 means, y is true for any value less than and equal to 8, which will give a closed circle on the graph, and the arrow will be pointing toward the left.

Now looking at the options we have,

A.)   y = 0 is part of the solution set.

The statement is true as the y value is less than 8.

B.)   y = 8 is part of the solution set.

The statement is true as the y value is equal to 8.

C.)  y = 10 is part of the solution set.

The statement is false as the y value is greater than 8.

D.)   There is an open circle on the graph at 8.

The statement is false as the inequality sign given is less than or equal to (≤).

E.)   There is a closed circle on the graph at 8.

The statement is true as the inequality sign given is less than or equal to (≤).

F.)   The arrow on the graph points left.

The statement is true as the value of y is always on the decreasing side, the number line is always decreasing the number or negative towards the left while positive towards the right.

G.)   The arrow on the graph points right.

The statement is false as the value of y is always on the decreasing side, the number line is always decreasing the number or negative towards the left while positive towards the right.

Hence, the correct options are A, B, E, and F.

Learn more about Inequality Sign:

https://brainly.com/question/19491153

Answer:

the volume of the cylinder is about 169.646

Step-by-step explanation:

V= 3.14 r^2 h = 3.14 × 3^2 × 6 = 169.646

Answer:

All except complementary angle.

Step-by-step explanation:

Complementary angles equal 90 degrees.

Answer:

all is correct

Step-by-step explanation:

because a right angle, complementary angle and 90% angle are the same thing and a supplementary angle and straight angle are 180% so all answers are correct

Answer:

Percent Error:: 12/36 = 33 1/3 %

Step-by-step explanation:

Final answer:

To find the percent error when estimating marbles in a jar, you subtract the estimated value from the actual value, divide by the actual value, and multiply by 100. In this case, the percent error is 8.54%.

Explanation:

To find the percent error, you first calculate the absolute error by subtracting the estimated value from the actual value. Then, divide the absolute error by the actual value and multiply by 100 to get the percent error.

Calculate absolute error: 82 (actual) - 75 (estimated) = 7

Percent error formula: (Absolute error / Actual value) x 100%

Percent error = (7 / 82) x 100% = 8.54%