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4 years ago

How many and what type of solutions?

Mathematics

1 answer:

kolbaska11 [484]4 years ago

3 0

Hello,

2k²-3k-9=0
==>k=3 or k=-3/2

Answer C two rational solutions.

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What is equal to 4/3

zhuklara [117]

1(1/3) in mixed number form

1.333 in decimal form

4 0

3 years ago

Please hurry thank you

emmasim [6.3K]

Answer:

7.9 ft

Step-by-step explanation:

The hypotenuse is the side opposite of the right angle, hence the hypotenuse for this triangle is 11 ft.

Side $x$ is adjacent to the angle given. So we need adjacent and we have hypotenuse. Which trigonometric ratio relates adjacent and hypotenuse? It is COSINE.

<em>Thus, we can write:</em>

$cos(A)=\frac{adjacent}{hypotenuse}\\cos(44)=\frac{x}{11}$

<em>Cross multiplying, we can solve for $x$ :</em>

$cos(44)=\frac{x}{11}\\x=cos(44)*11\\x=7.91$

Rounding to nearest tenth, we have $x=7.9$ ft.

6 0

4 years ago

Quadrilateral ABCD is inscribed in this circle. What is the measure of angle c?

alexandr402 [8]

3x+x+20 = 180
4x = 180-20
4x = 160
x = 40

×+20+3x+2x+38+C=360
40+20+3×40+2×40+38+C=360
40+20+120+80+38+C=360
298+C=360
C=360-298
C =62°

4 0

4 years ago

What is $34.00 with 25% off

Furkat [3]

34 * .25 = 8.5

34 - 8.5 = 25.5

It's $25.5 with 25% off.

5 0

3 years ago

Read 2 more answers

Complete the steps to solve the radical equation. 7 – x = x2 + 10x + 25 0 = x2 + 11x + 18 The equation has two possible solution

Strike441 [17]

There is no extraneous solution, while true solutions are x= -2 and x = -9

Step-by-step explanation:

We need to find the value of x from the equation:

$7-x = x^2 + 10x + 25$

$x^2 + 11x + 18=0$

Factorizing the equation:

$x^2 + 11x + 18=0\\x^2+9x+2x+18=0\\x(x+9)+2(x+9)=0\\(x+2)(x+9)=0\\x+2=0\,\,and\,\,x+9=0\\x=-2\,\,and\,\,x=-9\\$

So, values of x are: x= -2 and x = -9

Now, finding extraneous solution and true solution

Putting value of x in original equation

x= -2

$7-x = x^2 + 10x + 25$

$7-(-2) = (-2)^2 + 10(-2) + 25\\7+2=4-20+25\\9=4+5\\9=9$

Since -2 satisfies the given equation, so it is true solution.

Putting x = -9

$7-x = x^2 + 10x + 25\\7-(-9)=(-9)^2+10(-9)+25\\7+9=81-90+25\\16=16$

Since -9 satisfies the given equation, so it is true solution.

So, There is no extraneous solution, while true solutions are x= -2 and x = -9

Keywords: solve the radical equation

Learn more about solve the radical equation at:

#learnwithBrainly

7 0

4 years ago

Read 2 more answers