3 years ago

I need help with this

Mathematics

1 answer:

maksim [4K]3 years ago

6 0

Answer:

60 and 50 per hour

Step-by-step explanation:

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F(x) = -2x^3 + 3(x + 2). Does this mean that it's f(3) = -39

Anarel [89]

Answer:

Step-by-step explanation:

lets replace x with 3

f(3)= -2(3)^3+3(3+2)=-2*27+15=-54+15=-39

5 0

2 years ago

SU and VT are chords that intersect at point R.

vovikov84 [41]

Answer:

<h2>The length of the line segment VT is 13 units.</h2>

Step-by-step explanation:

We know that SU and VT are chords. If the intersect at point R, we can define the following proportion

$\frac{RS}{RT} =\frac{RV}{RU}$

Where

$RS=SR=x+6\\RT=x+4\\VR=RV=x+1\\RU=x$

Replacing all these expressions, we have

$\frac{x+6}{x+4} =\frac{x+1}{x}$

Solving for $x$ , we have

$x(x+6)=(x+4)(x+1)\\x^{2} +6x=x^{2} +x+4x+4\\6x-5x=4\\x=4$

Now, notice that chord VT is form by the sum of RT and RV, so

$VT=VR+RT\\VT=x+1+x+4\\VT=2x+5$

Replacing the value of the variable

$VT=2(4)+5\\VT=8+5\\VT=13$

Therefore, the length of the line segment VT is 13 units.

5 0

3 years ago

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No work needed!! Just answers, thank you! 25 points!!

Maurinko [17]

Answer:

Step-by-step explanation:

$S_{31} = 9 \cdot 31 + [-0.5 \cdot \frac{31(31-1)}{2}] = 46.5$

$S_{40} = 40 + [-3 \cdot \frac{40(40-1)}{2}] = -2300$

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3 years ago

Find the real-number root.001O no real rootsO 0.1O 0.1 and 0.1O 0.1 I need help

Nimfa-mama [501]

0.1

0.1^3 = 0.1*0.1*0.1 = 0.01*0.1 = 0.001

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3 years ago

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Help plz will give brainliest

Goshia [24]

Im pretty sure the answer is a

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3 years ago