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3 years ago

Select each pair of equivalent numbers. PLS HELP DUE TMR AND I DONT HOW TO SOLVE IT, PLS SHOW HOW U SET IT UP

Mathematics

1 answer:

BaLLatris [955]3 years ago

3 0

The pairs that are equivalent to each other are 40/1000 and 40%, 6/5 and 120%, 1/8 and 12.5% . They are the correct answers because if we divide for example 6/5 , we would get 1.2 and to turn a decimal into a percent we have to move the decimal point 2 times to the right meaning that the percentage would be 120% and you just do that for all! I hope this helped :)!!

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Which of the following equations is equivalent to 4[x + 2(3x - 7)] = 22x - 65

Nataly_w [17]

Answer:

See the equation simplified below.

Step-by-step explanation:

The equation simplifies to the following equations:

4[x + 2(3x - 7)] = 22x - 65

4[x+6x-14] = 22x - 65

4x+24x - 56 = 22x - 65

28x - 56 = 22x - 65

6x - 56 = -65

6x = -9

x = -3/2

7 0

4 years ago

galina1969 [7]

Answer:

Step-by-step explanation:

(–5g^5 h^6)^2 × (g^4 h^2)^4 the ^ carot symbol means raised to power X

(25 g^10 h^12) × (g^16 h^8) exponents raised to powers MULTIPLY

-5² = 25 g^5² = g^10 h^6² = h^12 do the same thing with (g^4 h^2)^4

25 g^(10+16) h^(12+8) collecting terms powers ADD

25 g^26 h^20 Which letter is the answer?

Did you follow my explaination?

8 0

3 years ago

The lengths and the widths of the following three rectangles are labeled. Create a polynomial that describes the sum of the area

mash [69]

The sum of the area of these three rectangles will be 3x² + 20x.

<h3>What is the area of the rectangle?</h3>

Let L be the length and W be the width of the rectangle.

Then the area of the rectangle will be

Area of the rectangle = L×W square units

The lengths and the widths of the following three rectangles are labeled.

The area of the first rectangle will be

A₁ = x · x

A₁ = x² square units

The area of the second rectangle will be

A₂ = 20 · x

A₂ = 20x

The area of the third rectangle will be

A₃ = 2x · x

A₃ = 2x²

Then the sum of the area of these three rectangles will be

A = A₁ + A₂ + A₃

A = x² + 20x + 2x²

A = 3x² + 20x

Thus, the sum of the area of these three rectangles will be 3x² + 20x.

More about the area of the rectangle link is given below.

brainly.com/question/20693059

#SPJ1

3 0

2 years ago

a group of high school students is making a parade float by stuffing pieces of tissue paper into a right wire frame that use $15

bogdanovich [222]

b*h=area

3*2=6

8*7=56

56+6=62

They will need 62 tissues

Hope this helped :)

6 0

3 years ago

Hi. I need help with these questions.<br> See image for question.<br> Answer 16 and 17

Irina-Kira [14]

Step-by-step explanation:

16.................................................

<h3>Given</h3>

Equation ax² + bx + c = 0
One of the roots is twice the other

Show that 2b² = 9ac

<h3>Solution</h3>

Let the roots be p and q

<u>The sum and product of the roots:</u>

p + q = -b/a
pq = c/a

<u>The sum of the roots, considering p = 2q,</u>

p + q = 2q + q = 3q

And

3q = -b/a ⇒ q = -b/(3a)

<u>The product of the roots, considering p = 2q:</u>

pq = 2q(q) = 2q²

And

2q² = c/a

<u>Substitute q with -b/(3a)</u>

2(-b/(3a))² = c/a
2b²/(9a²) = c/a
2b² = 9a²(c/a)
2b² = 9ac

=================================================

17. .................................................

<h3>Given</h3>

Quadratic equation

ax² = bx + c = 0, with equal roots

Show that b² = 4ac

<h3>Solution</h3>

<u>Equal roots means the discriminant is zero:</u>

D = √b² - 4ac
√b² - 4ac = 0
b² - 4ac = 0
b² = 4ac

3 0

3 years ago