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1 year ago

Please help brainliest to correct answer

Mathematics

1 answer:

charle [14.2K]1 year ago

7 0

Answer:

A, n = (8 - 7p)/m.

Step-by-step explanation:

mn + 7p = 8

mn = 8 - 7p

n = (8 - 7p)/m.

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which of the following value pairs can be used as m and n to factor the expression 9x^2-12x-5 A. 3, 15 B. –3, 15 C. 3, –15 D. –3

nirvana33 [79]

The answer may be c.
I am not clear about your question.
9x^2-12x-5=(3x-5)(3x+1)

7 0

3 years ago

What expression is equivalent to? Screenshots attached. Please help!

Galina-37 [17]

Answer:

the correct option is C i.e. $8x^4yz^4\sqrt{2yz}$

Step-by-step explanation:

We need to solve the expression :

$\sqrt{128x^8y^3z^9}$

Factors of 128 are: 2x2x2x2x2x2x2

and we know √ = 1/2

and √a.b = √a.√b

Solving:

$=\sqrt{128x^8y^3z^9}\\\\=\sqrt{128} \sqrt{x^8} \sqrt{y^3} \sqrt{z^9}\\=\sqrt{2x2x2x2x2x2x2}\sqrt{x^8} \sqrt{y^2.y} \sqrt{z^8.z}\\=\sqrt{2^2x2^2x2^2x2}\sqrt{x^8} \sqrt{y^2.y} \sqrt{z^8.z}\\=(2^2)^{1/2} (2^2)^{1/2}(2^2)^{1/2} (2)^{1/2} (x^8)^{1/2} (y^2)^{1/2} (y)^{1/2} (z^8)^{1/2} z^{1/2}\\=2.2.2.(2)^{1/2}x^4y(y)^{1/2}z^4(z)^{1/2}\\=8x^4yz^4\sqrt{2yz}$

So, the correct option is C i.e. $8x^4yz^4\sqrt{2yz}$

7 0

3 years ago

A ferris wheel can accommodate 50 people in 25 minutes .How many people could ride the ferris wheel in 6 hours

Naddika [18.5K]

So you have to ask yourself “how many 25 minute sessions are there in 6 hours?” First you have to convert 6 hours to minutes. 6 hours = 360 minutes. Next divide that number by 25. 360 divided by 25 is 14.4. Now you know that there are 14.4 sessions of 25 minutes in 6 hours. Because the Ferris wheel can have 50 people in 25 minutes, you can multiply 14.4 times 50. The answer is 720 people.

6 0

3 years ago

Mr. Jackson divided £420 between his children in the ratio of their ages, Mitch is 4 and Jo is 3

3241004551 [841]

Answer:

Mitch=60*4=240

Jo=60*3=180

Step-by-step explanation:

420/7=60

4 0

3 years ago

Which answer, to the correct number of significant figures, is closest to the true value of the expression: (9.1 x 104 )(1.1 x 1

DIA [1.3K]

Answer : The correct answer is, -13000 g

Explanation :

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

The rule apply for the multiplication and division is :

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

The given expression is:

$(9.1\times 10^4)(1.1\times 10^{-5})(\log 10^{-13})(1000)g$