George and Paul use a metal alloy that is 18.1% copper to make jewelry. How many ounces of an alloy that is 14% copper must be mixed with an alloy that is 23% copper to form 90 ounces of the desired alloy?

Answer:

B

Step-by-step explanation:

Answer:

its either D or C but I think its D

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

Answer:

9 months

Step-by-step explanation:

Let x = number of months with withdrawal

Since he takes out 75 for each month, multiply x by 75 like this: 75x

This is being taken out of the 800, so subtract 800 by 75x

800 - 75x

This has to be equal to 125 since Mick does not want the account to be less than 125

800 - 75x = 125

Let's subtract 800 from both sides

800 - 75x = 125

- 800            - 800

-75x = -675

Then, divide both sides by -75 to isolate the x variable

-75x/-75 = -675/-75

x = 9

The max number of months is equal to 9

Answer:

Initial Value

Step-by-step explanation:

Trust

Answer:

B

Step-by-step explanation:

Edge2020

When applying the some rule, we only combine two equal ratios at once. Consequently, we deal with pairs of sides and angles that have equivalent ratios.

When two ratios are equal, a percentage is formed; alternatively, two equal ratios can be said to produce a proportion. When we understand that two ratios are equal, you can write a proportion. The ratios of these two numbers are equal.

When two variables are correlated in a manner that their ratios are equal, this is known as a proportional relationship. In a proportional connection, one variable is always a constant value multiplied by the other, which is another way to think of them. The "constant of proportionality" is the term used to describe that constant. Two angles are said to be complimentary if their sum is 90 degrees. Alternatively put, two angles are said to be complimentary if they combine to make a right angle.

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The standard error is 0.0912.

The standard error (SE) is a measure of the precision of the sample mean estimate compared to the true population mean. To calculate the SE, we use the formula SE = standard deviation / square root of sample size.

In this scenario, the population parameter is 0.7, and the sample size is 30. If we assume that the sample mean is an unbiased estimator of the population mean, then the SE can be calculated using the above formula. However, we do not know the standard deviation of the population, so we use the sample standard deviation as an estimate.

Assuming the sample is large enough to assume normality, the formula becomes SE = \(\sqrt{(0.7*0.3)/30}\)   = 0.0912. Therefore, the standard error for a sample size of 30 is 0.0912. This means that if we were to take multiple samples of size 30 from the same population, the standard deviation of the means of those samples would be around 0.0912 away from the population parameter of 0.7 on average.

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While problem and solution essays are considered expository (writing that exposes facts) in nature, they are persuasive in nature because they call for a solution to a problem.

What is the problem?

A mathematical problem is one that can be modeled, examined, and potentially resolved using mathematical techniques. This can be a practical issue, like figuring out the orbits of the planets in our solar system, or a more theoretical issue, like Hilbert's problems.

The expository essay is a type of essay that calls for the student to research a topic, assess the evidence, elaborate on the topic, and present an argument about the topic in a clear and succinct manner. This can be done by using examples, definitions, comparisons, cause and effect analyses, and more.

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Answer: 20,000

Step-by-step explanation:

We can estimate the product of 5 and 4,257 by multiplying 5 by 4,000

5 * 4,000 = 20,000

The product of 5 and 4,257 is about 20,000

The real answer (not an estimate)

21,285

That is around 20,000 so we are correct

Answer:

Step-by-step explanation:

Total number of ornaments:

a)

b)

c)

Answer:

8)

total ornament: 24 + 12 + 8 + 19 = 63

a. probability its a gold ornament: \(\frac{12}{63}\) → \(\frac{4}{21}\)

b. probability its a silver ornament: \(\frac{24}{63}\) → \(\frac{8}{21}\)

c. probability she will get gold or silver ornament:   \(\frac{24}{63}\) +  \(\frac{12}{63}\) = \(\frac{4}{7}\)

Given:

If Liz is in eighth grade, then she takes Spanish.

Required:

We need negation of the given statement.

Explanation:

There are some rules for then negation statement and one of those rules is

"if A, then B" negation of this is "A and not B"

Final answer:

Liz is in eighth grade and she does not take Spanish.

The quotient in polynomial form is C. x² - x ₊ 1.

In algebra, synthetic division is a method for manually performing Euclidean division of polynomials, with less calculation than long division.

The given problem is-

-3 | 1  2  -2  3

Using synthetic division method,

-3 | 1  2  -2  3

   |   -3    3  3

   |1   -1    1  6

So, the remainder from the calculation is 6 .

And the quotient polynomial is x² - x ₊ 1.

Hence, the correct answer for the given question is C. x² - x ₊ 1

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2 ways to get to 1/2

Way 1:

Use the 1/4 scoop 2 times

1/4 + 1/4 =2/4

2/4 simplified is 1/2

Way 2:

Use the 1/8 scoop 4 titmes

1/8+1/8+1/8+1/8=4/8

4/8 simplified is 1/2

Hope this helps!

Answer:

5,45

Step-by-step explanation:

Answer:

Correct mean = 32 grams

Correct Standard deviation = observed S.D = 2 grams

Step-by-step explanation:

We are told in the question above :

A scientist is weighing each of 30 fish. She obtains a mean of 30 g and a standard deviation of 2 g. After completing the weighing, she finds that the scale was misaligned and always under reported every weight by 2 g that is

The mean after correcting the error in the scale is :

= observed mean + 2g

= 30g + 2g = 32g

The standard deviation after correcting the error in the scale remains the same as the difference of 2g has no significant effect on the Standard deviation.

This standard deviation = 2g

The scenarios that can be considered a seller-based discount are:

A. The offer by Wire and Cable

B. Carfna's Fine Foods

C. Mouser Electronics offer

E. Carchex Car Maintenance

A seller-based discount is a discount that is offered by a seller for the early purchase of a product. The goal of the seller in this case is to get cash as he or she is in an immediate need for cash.

The most outstanding example is that of Carchex Car Maintenance where an offer is made by the seller for the early purchase of products.

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Answer:

86% chance

Step-by-step explanation:

there is an 86% chance it won't rain because 100%-14%=86%

the correct answer is a reflection across the x-axis.

How to solve questions?

Based on the given image, the type of transformation shown is a reflection across the x-axis.

A reflection is a transformation that flips a figure over a line of reflection, in this case, the x-axis. The resulting image is a mirror image of the original figure, with corresponding points on either side of the line of reflection equidistant from it.

In the given image, polygon ABCD is the preimage, and polygon A'B'C'D' is the resulting image. We can see that the two polygons are mirror images of each other across the x-axis. For example, point A in the preimage is reflected across the x-axis to point A' in the resulting image, which is directly below point A. Similarly, point B in the preimage is reflected to point B', point C to C', and point D to D'.

A 90° clockwise rotation would result in a different orientation of the polygon, where point A would move to the position of point B, point B to C, point C to D, and point D to A. A horizontal or vertical translation would result in a shift of the polygon in the respective direction, which is not the case here.

Therefore, the correct answer is a reflection across the x-axis.

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Answer:

Im pretty sure 3 times

Step-by-step explanation:

Can i get branliest and heart

Have a good day!

Answer:

x=4

Step-by-step explanation:

Simplifying

-1(7 + -4x) = 9

(7 * -1 + -4x * -1) = 9

(-7 + 4x) = 9

Solving

-7 + 4x = 9

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7' to each side of the equation.

-7 + 7 + 4x = 9 + 7

Combine like terms: -7 + 7 = 0

0 + 4x = 9 + 7

4x = 9 + 7

Combine like terms: 9 + 7 = 16

4x = 16

Divide each side by '4'.

x = 4

Answer:

x = 4

Step-by-step explanation:

-(7 - 4x) = 9             (Given)

-7 + 4x = 9              (Distributed)

-7 + 4x + 7 = 9 + 7  (Add 7 on both sides)

4x = 16                    (Simplify)

4x/4 = 16/4             (Divide 4 on both sides)

x = 4                       (Simplify)

Answer:

Here's how to solve the problem:

First, convert the radii of the tires from decimeters (dm) to centimeters (cm). Each decimeter is equal to 10 centimeters, so the radius of each tire is 14 dm x 10 cm/dm = 140 cm.

The distance covered by the motorbike is equal to the circumference of one tire multiplied by the number of revolutions. The circumference of a circle is equal to 2πr, where r is the radius of the circle. So the distance covered is:

distance covered = 2 x π x 140 cm x 7500 revolutions distance covered = 6600000 cm

Therefore, the distance covered by the motorbike is 6,600,000 centimeters (or 66 kilometers). The answer is c) 6,600,000 centimeters (or 66 kilometers).

Step-by-step explanation:

Answer:

A. Repeat the simulation several more times

Step-by-step explanation:

The purpose of the simulation model is to represent the effectivity of the passes.

The proportion of successful passes is 60%.

As we have 10 digits available, 6 (digits from 0 to 5) are used for the outcome "the pass is completed" and 4 (digits 6, 7, 8, and 9) to represent the outcome "the pass is not completed". This is correct, as it represents a probability of 60% of having a successful pass.

But to have a representative distribution of the possible and probable results, the simulation have to run enough times to have a stable distribution of the results.

The new coordinate of Q after a rotation of 90° is (10, -5)

Rotation simply means turning

In order to answer this question, you need to know the rotation rule  for  90° about the origin.

If a point P, whose position vector is (x,y), is rotated 90° counterclockwise rotation about the origin, the position of the image P' is (-y, x).

From the graph, the initial coordinate of Q is (-5, -10).

Thus, the new coordinate of Q will be (10, -5)

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The value of h in the equation h = 6q - 2u , when q = 3 and u = -5 is h = 28 .

In the question ,

it is given that ,

the equation is h = 6q - 2u ,

we have to find the value of h , when q = 3 and u = -5 .

Substituting the value of q = 3 and u = -5 in the equation ,

we get,

h = 6q - 2u

h = 6(3) - 2(-5)      ....because 6(3) = 18   and -2(-5) = 10

h = 18 + 10

Simplifying the above equation further ,

we get ,

h = 28

Therefore , The value of h in the equation h = 6q - 2u , when q = 3 and u = -5 is h = 28 .

The given question is incomplete , the complete question is

Find the value of h in the equation h = 6q - 2u , when q = 3 and u = -5  ?

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Answer:

790 is 100% you get 40% discount, the money you pay is: 790 time 40 divided by 100

Answer:  7n−13

Step-by-step explanation:

The expression can be simplified to obtain as 9 + 6t.

An algebraic expression can be obtained by doing mathematical operations on the variable and constant terms.

The variable part of an algebraic expression can never be added or subtracted from the constant part.

The given algebraic expression is 9 + 12t – 6t.

It can be simplified as follows,

9 + 12t – 6t

Here 9 is a constant.

And, the terms 12t and 6t have the same variable t.

Which implies they are like terms.

Since the like terms in an expression can be added to subtracted, the given expression can be simplified as below,

9 + 12t – 6t

⇒ 9 + 6t

Hence, the simplification of the given expression results as 9 + 6t.

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We kindly invite to check the image attached below to see the triangle constructed on Cartesian plane.

The measure of angle A is approximately equal to 46.102° and the measure of side AC is equal to 2√13 centimeters.

Triangles are figures generated by three distinct points set on Cartesian plane, with three line segments (AB, BC, AC) and three internal angles. In this problem we show all steps to construct a triangle with the help of a graphing tool. First, set point B at origin.

B(x, y) = (0, 0)

Second, add point C along x-axis:

C(x, y) = (6, 0)

Third, determine point A and add it on Cartesian plane:

A(x, y) = (8 · cos 60°, 8 · sin 60°)

A(x, y) = (4, 6.928)

Fourth, draw all line segments in triangle ABC. The result is shown in the image attached below.

Finally, we determine the measure of angle A and side AC by trigonometry:

Angle A:

First, determine the length of line segment AC by law of cosine:

AC = √(AB² + BC² - 2 · AB ·BC · cos B)

AC = √(8² + 6² - 2 · 8 · 6 · cos 60°)

AC = 2√13

Second, calculate the angle A by law of cosine:

cos A = (BC² - AB² - AC²) / (- 2 · AB · AC)

cos A = [6² - 8² - (2√13)²] / [- 2 · 8 · 2√13]

A ≈ 46.102°

Side AC:

AC = 2√13

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