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PIT_PIT [208]
3 years ago
12

Find the solutions to the equation below.

Mathematics
1 answer:
dybincka [34]3 years ago
5 0

Step-by-step explanation:

Use the quadratic formula to find the solutions.

−b±√b2−4(ac)2a-b±b2-4(ac)2a

Substitute the values a=9a=9, b=0b=0, and c=−81c=-81 into the quadratic formula and solve for xx.

x=±3x=±3

The final answer is the combination of both solutions.

x=3,−3x=3,-3

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Please help I’ll give brainliest
JulsSmile [24]

Answer:

33

Step-by-step explanation:

The formula for solving the area of a Trapezoid is a+b/2*h if we substitute the value to 16+3/2*3 it will equal 33

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3 years ago
How can percents show proportional relationships between
GarryVolchara [31]

Answer:

By testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin

Step-by-step explanation:

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3 years ago
Please help I’ve been stuck on it forever. :(
slava [35]

Answer:

$31.37 is the sale price

Step-by-step explanation:

All you need to do to find the discount price (sale price) is multiply the price of the item by the decimal form of the percentage.

1. Store A. 40% off the original price of $159.99

(159.99 * .40) = 63.996

63.996 is the discount price we are looking for

2. Store B. 25% off the original price of $130.50

(130.50 * .25) = 32.625

32.625 is the discount price we are looking for

3. Now to find their difference you just subtract the two values.

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The discount price (sale price) is $31.371

6 0
3 years ago
a textbook has a length of 6 inches, a height of y inches, and a width of x inches. if the length of the diagonal of the front c
Varvara68 [4.7K]

Answer:

Part 1) The value of x is 2\sqrt{7}\ in

Part 2) The value of y is \sqrt{21}\ in

Step-by-step explanation:

Part 1

Find the value of x

Applying Pythagoras Theorem

8^{2}=x^{2} +6^{2}

x^{2}=8^{2}-6^{2}

x^{2}=28

x=2\sqrt{7}\ in

Part 2

Find the value of y

Applying Pythagoras Theorem

7^{2}=x^{2} +y^{2}

substitute the value of x

7^{2}=28 +y^{2}

y^{2}=7^{2}-28

y^{2}=21

y=\sqrt{21}\ in

4 0
3 years ago
What is the completely factored form of this polynomial? 2x5 + 12x3 − 54x
Cloud [144]

Answer:

2x(x^2-3)(x^2+9)

Step-by-step explanation:

Given polynomial:

2x^5+12x^3-54x

Factor out the common term 2x:

\implies 2x(x^4+6x^2-27)

To factor the trinomial x^4+6x^2-27:

\textsf{Let }u=x^2 \implies u^2+6u-27

Factor the quadratic by finding two numbers that multiply to -27 and sum to 6:  9 and -3

Rewrite the middle term as the sum of these two numbers:

\implies u^2+9u-3u-27

Factorize the first two terms and the last two terms separately:

\implies u(u+9)-3(u+9)

Factor out the common term (u + 9):

\implies (u-3)(u+9)

Substitute back u=x^2:

\implies (x^2-3)(x^2+9)

Therefore, the factored form of the given polynomial is:

\implies 2x(x^2-3)(x^2+9)

3 0
3 years ago
Read 2 more answers
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