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2 years ago

Question 1 of 10

Mathematics

2 answers:

AveGali [126]2 years ago

8 0

Answer:

Option C

(4x + 5)(4x +5)

Step-by-step explanation:

Step 1: Write the expression

$16x^{2} + 40x + 25$

Step 2: Choose to integers that when you add you get 40 and when multiplied you get 400

The integers are +20 and +20

Step 2: Split 40x into + 20x nd + 20 x

Therefore

$16x^{2} + 40x + 25 = 16x^{2} + 20x + 20x + 25$

$16x^{2} + 20x + 20x + 25 = 4x(4x + 5) + 5(4x + 5)\\(4x + 5)(4x + 5)$

yulyashka [42]2 years ago

5 0

the answer is C

C. (4x + 5)(4x + 5)

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How can you find the whole when you know part and the percent.

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An example should make this clear.

If $50 is 40% what is the value of the whole amount?

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By proportion this = (100/ 40) * 50

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3 years ago

Find the equation of the line through point (1,−5) and perpendicular to y=1/8x+2. Use a forward slash (i.e. "/") for fractions (

Masteriza [31]

Answer:

$y = -8x + 3$

Step-by-step explanation:

Equation of a line:

The equation of a line has the following format:

$y = mx + b$

In which m is the slope and b is the y-intercept.

Perpendicular lines:

When two lines are perpendicular, the multiplication of their slopes is -1.

Perpendicular to y=1/8x+2

This line has slope $\frac{1}{8}$

So, for the line we want to find the equation, we have that:

$\frac{m}{8} = -1$

$m = -8$

$y = -8x + b$

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This means that when $x = 1, y = -5$ . We use this to find b. So:

$y = -8x + b$

$-5 = -8 + b$

$b = 3$

The equation of the line is:

$y = -8x + 3$

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3 years ago

Please Explain/Show your work!

Zigmanuir [339]

Answer:

They are both proportional.

Tank A = .00375 minutes/gallon

Tank B = 2/600 or ~0.003 minutes/gallon

Step-by-step explanation:

They are both proportional because as time increases, the amount of gallons increases.

Tank A unit rate

Tank B unit rate

Rate = rise / run

Choose points on the graph that has definite points.

Tank A = (1.5 mins - 0.75 mins) / 200 gallons

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3 years ago

I’m about to cry from frustration. Help please before I die

kvv77 [185]

Answer:

$\frac{1}{3}x+16=37$

63 Jelly Beans

Step-by-step explanation:

The unknown is the number of jelly beans originally in the bag or x

First he had x jelly beans

The he ate one-third of them

$\frac{1}{3}x$

He then ate 16 more jelly beans

$\frac{1}{3}x+16$

This was equal to 37 jelly beans

$\frac{1}{3}x+16=37$

This is the equation

Now solve for x

Subtract 16 from both sides

$\frac{1}{3}x=21$

Multiply both sides by 3

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago