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3 years ago

4y-5x=-8

Mathematics

1 answer:

Dovator [93]3 years ago

3 0

Answer:

4y−5x=−8

Step 1: Add -4y to both sides.

−5x+4y+−4y=−8+−4y

−5x=−4y−8

Step 2: Divide both sides by -5.

−5x

−5

−4y−8

−5

Answer:

Step-by-step explanation:

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What is the coefficient of the first term in the expression 8x+3y+4

GrogVix [38]

Answer:

Step-by-step explanation:

the first term is 8x. 8 is the coefficient and x is the base. so the answer is 8.

5 0

3 years ago

Identify the sequence graphed below and the average rate of change from n = 1 to n = 3.

dsp73

Answer:

The required sequence is $a_n=20(\frac{1}{2})^{n-1}$ . The average rate of change from n = 1 to n = 3 is -7.5.

Step-by-step explanation:

From the given graph it is clear that the sequence is a GP because the all terms are half of their previous terms.

Here, $a_2=10,a_3=5,a_4=2.5,a_5=1.25$

$r=\frac{a_3}{a_2}=\frac{5}{10}=\frac{1}{2}$

The common ratio of GP is 1/2.

$r=\frac{a_2}{a_1}$

$\frac{1}{2}=\frac{10}{a_1}$

$a_1=20$

The first term of the sequence is 20.

The formula for sequence is

$a_n=a(r)^{n-1}$

Where a is first term and r is common difference.

The required sequence is

$a_n=20(\frac{1}{2})^{n-1}$

The formula for rate of change is

$m=\frac{f(x_2)-f(x_1)}{x_2-x_1}$

The average rate of change from n = 1 to n = 3 is

$m=\frac{f(3)-f(1)}{3-1}$

$m=\frac{5-20}{3-1}$

$m=\frac{-15}{2}=-7.5$

Therefore the required sequence is $a_n=20(\frac{1}{2})^{n-1}$ . The average rate of change from n = 1 to n = 3 is -7.5.

8 0

3 years ago

Read 2 more answers

Explain the error. To find her total earnings for those two weeks, Nadia writes 7.5 x 18.5 + 20 =$158.75. Show the correct solut

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Answer:

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Step-by-step explanation:

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3 years ago

The ratio of the measure of three angles of a triangle is 2:3:10. Find the measure of the largest angle.

faltersainse [42]

Answer:

The measure of the largest angle:

120°

Step-by-step explanation:

The sum of the internal angles of a triangle = 180°:

2 + 3 + 10 = 15

then:

180/15 = 12

then, the measure of the largest angle:

10 * 12 = 120°

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Find the time required for an investment of 5000 dollars to grow to 9000 dollars at an interest rate of 7.5

umka2103 [35]

Answer:

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Step-by-step explanation:

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