MATHEMATICS COLLEGE

Please help fast!!! I need help with question attached!!

Answers

Answer 1

Answer:

Answer:

26 degrees

Step-by-step explanation:

2 angles must equal to 180 of they share the same side/line so,

180-154=26

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The equation cosx=(sqrt 3)/2 is an identity true or false
Anyone know this? that box is just when I get the answr
Please answer this correctly without making mistakes
ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing. Show your work or give an explaination.
1. A cab driver charges a flat rate of $7 for the first mile driven and $2 for every mile after that. If thecost of the cab ride is modeled by the expression 7 + 2(x - 1). What does (x - 1) represent?

what are the steps for multiplying monomial algebraic terms where they have exponents with like bases

Answers

Answer:

See below.

Step-by-step explanation:

Rule:

$a^m * a^n = a^(m + n)$

Explanation:

When multiplying monomials with the same base, write the same base and add the exponents.

If r = 5 units and x = 11 units, then what is the total surface area of the cylinder shown above?

Answers

Answer: 502.65

Step-by-step explanation: A= 2πrh + 2πr^ this is the formula for solving the surface area so now you must substitute

2·π·5·11+2·π·5^

6.28 · 55 + 2 π · 25

add and you will get 502.65 hope this helps mark me brainliest if it did

How much pure alcohol must a pharmacist add to 10 cm of a 10% alcohol solution to strengthen it to a 70% solution? ASAP

Answers

20 cm³ of pure alcohol is added to 10 cm of a 10% alcohol solution to strengthen it to a 70% solution.

Let x represent the volume of pure alcohol (100%) in cm³ needed to be added. Hence:

x * 100% + 10 cm³ * 10% = 70% * (x + 10 cm³)

x * 1 + 10 * 0.1 = 0.7 * (x + 10)

x + 1 = 0.7x + 7

x - 0.7x = 7 - 1

0.3x = 6

x = 20 cm³

Therefore 20 cm³ of pure alcohol is added to 10 cm of a 10% alcohol solution to strengthen it to a 70% solution.

Find out more on equation at: brainly.com/question/13763238

Answer:

20 cm³

Step-by-step explanation:

Suppose you are climbing a hill whose shape is given by the equation z = 900 − 0.005x2 − 0.01y2, where x, y, and z are measured in meters, and you are standing at a point with coordinates (120, 80, 764). The positive x-axis points east and the positive y-axis points north. (a) If you walk due south, will you start to ascend or descend? ascend descend Correct: Your answer is correct.

Answers

Answer:

Ascend

Step-by-step explanation:

In order to solve this problem, we are going to use some principles of vector calculation. The concepts we are going to use are Partial derivatives, gradient vector, velocity vector, direction vector, and directional derivative.

The gradient vector is a vector that describes how is the 'slope' in the space of a multivariable function at a specified point; it is built as a vector of partial derivatives. The vector velocity is a vector that describes the direction and speed of the movement of a body, if we make the velocity a unitary vector (a vector whose norm is 1), we obtain the direction vector (because we are not considering the real norm of the vector, just direction). Finally, the directional derivative is a quantity (a scalar) that describes the slope that we get on a function if we make a displacement from a particular point in a specific direction.

The problem we have here is a problem where we want to know how will be the slope of the hill if we stand in the point (120, 80, 764) and walk due south if the hill has a shape given by z=f(x,y). As you see, we have to find the directional derivative of z=f(x,y) at a specific point (120, 80, 764) in a given displacement direction; this directional derivative will give us the slope we need. The displacement direction 'u' is (0,-1): That is because 'y' axis points north and our displacement won't be to the east either west (zero for x component), just to south, which is the opposite direction of that which the y-axis is pointing (-1 for y component). Remember that the direction vector must be a unitary vector as u=(0,-1) is.

Let's find the gradient vector:

$z=900-0.005x^2-0.01y^2\n(\partial z)/(\partial x)=-0.005*2*x=-0.01x\n(\partial z)/(\partial y)=-0.01*2*y=-0.02y\n \nabla (z)=(-0.01x,-0.02y)$

Evaluate the gradient vector at (120,80) (764 is z=f(120,80); you may confirm)

$\nabla (z(120,80))=(-0.01*120,-0.02*80)=(-1.2,-1.6)$

Finally, find the directional derivative; if you don't remember, it can be found as a dot product of the gradient vector and the direction vector):

$D_(u,P_0)= \nabla (z)_(P_0)\cdot u\nD_(u,P_0)= (-1.2,-1.6)\cdot (0,-1)=1.6$

As you see, the slope we find is positive, which means that we are ascending at that displacement direction.

Joyce Flynn, an insurance agent, earned in her first week on the job a commission of $1,800. Her commission percent is 30 percent. Joyce's total sales for the week was:

Answers

if 1800 is the 30% of the total, so 1800 / .30 = 6,000

Using the provided information, it is determined that $6000 was Joyce's total weekly sales.

What does the percent mean?

Percent, which is a relative value used to denote hundredths of any quantity.
Since one percent (symbolized as 1%) is equal to one hundredth of something, 100 percent stands for everything, and 200 percent refers to twice the amount specified.

What is the significance of percentage?

Comparing two amounts while rebasing the second amount to 100 is the simplest way to use percentages.

Given:

An insurance agent named Joyce Flynn made a commission of $1,800 in her first week on the job. She receives a 30% commission.

We need to find the total sales for the week.

Let, x = total commission

Since, 30% of total commission is 1800. So, total sales will be:

x = 1800/0.30 = 6000

Therefore, Joyce's total sales for the week is found to be $6000 by using the given data.

Learn more about percentage here:

brainly.com/question/24877689

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Given: x - 6 > -2Choose the solution set.

{x | x ∈ R, x > 4}
{x | x ∈ R, x > -8}
{x | x ∈ R, x < 4}
{x | x ∈ R, x < -8}

Answers

{ x | x E R, x > 4 }

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The universal set in this diagram is the set of integers from 1 to 15. Place the integers in the correct place in the Venn Diagram.please help, i’ve been stuck on this assignment for almost an hour now and i can’t figure it out..20 points and branliest!!!