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svet-max [94.6K]
3 years ago
10

Please answer this correctly without making mistakes I want ace expert and genius people to answer this correctly without making

mistakes

Mathematics
2 answers:
andre [41]3 years ago
8 0

Answer:

it's 36

-4 and 4 cancel out and 6 squared is 36

agasfer [191]3 years ago
7 0

Answer:

rt + s^{2} = 20

Step-by-step explanation:

r = -4

s = 6

t = 4

equation:

⇒ rt + s^{2} =

substitute the right numbers for the letters:

⇒ (-4) (4) + 6^{2}

figure out what (-4) (4) and 6^{2} is:

⇒ (-4) (4) = -16

⇒ 6^{2} = 36

rewrite the equation:

⇒ -16 + 36

⇒ 20

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The frog population at a lake doubles every week. The population can be modeled by f(x) = 15(2)x and f(6) = 960. What does the 9
insens350 [35]

Answer:

a is the correct option.

Step-by-step explanation:

We have been given the population model is f(x)=15(2)^x, f(6)=960

Here x represents number of weeks and f(x) is population of frog after x weeks.

For x= 6, we have

f(6)=15(2)^6\\\\f(6)=15\times 64\\f(6)=960

It means that the population after 6 weeks is 960.

Hence, f(6)=960 represents the population after 6 weeks.

a is the correct option.

6 0
4 years ago
Solve the equation 3x+x²=-7. Does the number of solutions match the information provided by the discriminant? Explain
MA_775_DIABLO [31]

Answer:

-\frac{3}{2}+\frac{\sqrt{19}i}{2} and -\frac{3}{2}-\frac{\sqrt{19}i}{2}

Step-by-step explanation:

3x+x^2=-7\\\Rightarrow x^2+3x+7=0

Discriminant

D=b^2-4ac\\\Rightarrow D=3^2-4\times 7\times 1\\\Rightarrow D=-19

If the discriminant is a negative number then the roots of the equation are imaginary

x=\frac{-b\pm \sqrtD}{2a}\\\Rightarrow x=\frac{-3\pm \sqrt{-19}}{2\times 1}\\\Rightarrow x=-\frac{3}{2}\pm \frac{\sqrt{19}i}{2}\\\Rightarrow x=-\frac{3}{2}+\frac{\sqrt{19}i}{2}, x=-\frac{3}{2}-\frac{\sqrt{19}i}{2}

So, the two solutions are -\frac{3}{2}+\frac{\sqrt{19}i}{2} and -\frac{3}{2}-\frac{\sqrt{19}i}{2}

3 0
3 years ago
The radius of the Morgan family’s circular swimming pool is 8 feet what is the area of the pool cover the Morgan’s use to cover
suter [353]
The working out would be-
Pi x radiussquared
Pi x 64 = 201.0619298297468
Rounded to 2 decimal places =
201.06 feet2
4 0
3 years ago
Use ABC, in which AB = 48, AC = 64, and BC = 80, to answer the question.
Deffense [45]

Answer:

CosB  = \frac{48}{80}

Step-by-step explanation:

Given

AB = 48, AC = 64, and BC = 80

Required

Determine the ratio of cosB

The first step is to determine, which type of triangle it is.

Checking for Right Angled Triangle

For a triangle to be a right angled triangle, the square of the largest side must be equal to the sum of squares of other sides

This implies that:

80^2 = 48^2 + 64^2

6400 = 2304 + 4096

6400 = 6400

<em>Hence, the triangle is a right angled triangle [See attachment]</em>

From trigonometry;

CosB  = \frac{Adjacent}{Hypotenuse}

The adjacent of B = 48 while the hypotenuse is 80;

Hence;

CosB  = \frac{48}{80}

Hence, the ratio of cos B is CosB  = \frac{48}{80}

4 0
4 years ago
What is the completely factored form of 8x^2 -50
dezoksy [38]
<span>8x^2 -50
= 2(4</span><span>x^2 - 25)
= 2(2x + 5)(2x - 5)

hope it helps </span>
4 0
4 years ago
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