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3 years ago

100 points that is in

Mathematics

2 answers:

Mice21 [21]3 years ago

8 0

Answer:

i dont know what your talking about lol

Step-by-step explanation:

Marrrta [24]3 years ago

4 0

Answer:

what

Step-by-step explanation:

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Please solve these algebraic questions? THANKS

miskamm [114]

Step-by-step explanation:

Note: I'm only providing solutions for Problem 9.

<h2>9. Simplify the following by collecting like terms: </h2>

Combining like terms involve performing the required mathematical operations (using the PEMDAS rule). The terms must have the same degree (or exponents).

Add the coefficients of both terms.

3a + 7a = 10a

Add the coefficients of both terms.

4n + 3n = 7n

Subtract the coefficient of both terms.

12y - 4y = 8y

Add the coefficients of all terms.

5x + 2x + 4x = 11x

The last term, "ba," can be rewritten as, "ab." Remember that with algebraic expressions such as "ab," it essentially involves multiplication of both variables within the same term. Thus, ab = a × b. The variables ab also have a numerical coefficient of 1: 1a × 1b.

Now, we can perform the subtraction on all terms:

6ab - 2ab - ab = 3ab.

Subtract 2mn from 2mn, which leaves you with 7mn:

7mn + 2mn - 2mn = 7mn

For this algebraic expression, you could only combine the terms with the same variable and degree. Therefore, you'll have to subtract 3y from 4y, leaving the constant, 8, unaffected.

4y - 3y + 8 = y + 8

Similar to question g, only combine the terms with the same degree and variable, leaving the constant unaffected.

7x + 5 - 4x = 3x + 5

You could only combine the terms with the same set of variables and degree, which are the first two terms on this given question. You cannot combine the last term, 4y, into the other terms.

6xy + xy + 4y = 7xy + 4y

Using the same reasoning as in question e: the last term, 7ba, can be rewritten as 7ab, for which you could combine with the first term, 5ab.

5ab + 3 + 7ba = 12ab + 3

Combine the like terms, which are the second and the last term.

2 - 5m - m = 2 - 6m

Combine the like terms, which are the second and the last term.

4 - 2x + x = 4 - x

8 0

3 years ago

A store's profit P varies directly with the number of items n that they purchase from a warehouse. Greg's gadgets buys 75 Wacky

vovangra [49]

Answer:

$P=-2.54n$ .

Step-by-step explanation:

We have been given that a store's profit P varies directly with the number of items n that they purchase from a warehouse.

We know that two proportional quantities are in form $y=kx$ , where y is directly proportional to x ad k is constant of variation.

Upon substituting our given variables, we will get:

$P=kn$

We are also told that Greg's gadgets buys 75 Wacky Widgets from Gadget Supply Warehouse. The store's profit for this purchase is -190.50. Let us find constant of proportionality.

$-190.50=k\cdot 75$

$\frac{-190.50}{75}=\frac{k\cdot 75}{75}$

$k=-2.54$

Therefore, our required equation would be $P=-2.54n$ .

7 0

4 years ago

Use the value of the linear correlation coefficient r to find the coefficient of determination and the percentage of the total v

sergiy2304 [10]

Answer:

Step-by-step explanation:

Given that $r = 0.952$

We have coefficient of determination

$r^2 =0.952^2\\=0.906304$

=90.63%

This implies that nearly 91% of variation in change in dependent variable is due to the change in x.

The coefficient of determination is the square of the correlation (r) between predicted y scores and actual y scores; thus, it ranges from 0 to 1.

An R2 of 0 means that the dependent variable cannot be predicted from the independent variable.

An R2 of 1 means the dependent variable can be predicted without error from the independent variable.

5 0

3 years ago

(1/5)^3 as a simplified proper or improper fraction

Rom4ik [11]

Answer:

1/5

Step-by-step explanation:

Hope this helps

8 0

2 years ago

15. In an experiment, a student needs to know the mass of four different objects: a shoe, piece of paper, book, and a tissue. Wh

Misha Larkins [42]

The best and most correct answer among the choices provided by your question is the third choice.

<span>The unit of measurement should the student use is grams.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

5 0

3 years ago