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2 years ago

I need help please...

Mathematics

1 answer:

Ray Of Light [21]2 years ago

7 0

1. 15
2. 7/11

good examples the test had

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GenaCL600 [577]

Answer:

D. y ≤ –3x + 4

Step-by-step explanation:

3 0

2 years ago

Point B is the midpoint of the line segment ACIf A = (9, 2) and B = (4, -4), where is C?

kow [346]

You have that A = (9,2), B = (4,-4)

In order to find the coordinates of C, a point at the middle of the segment AC, you calculate the midpoint of each couple of coordinates.

For the first coordinate:

$\frac{9+4}{2}=\frac{13}{2}=6.5$

For the second coordinate:

$\frac{2-4}{2}=\frac{-2}{2}=-1$

Hence, the coordinate of C is C = (6.5 , -1)

For the case of the points (4a,5g) and (-6a,-g), you have:

$\begin{gathered} \frac{4a-6a}{2}=\frac{-2a}{2}=-a \\ \frac{5g-g}{2}=\frac{4g}{2}=2g \end{gathered}$

Hence, the midpoint is (-a,2g)

$\frac{5g-g}{2}=\frac{4g}{2}=2g$

7 0

1 month ago

Find the x- and y-intercepts of the function f(x) = log(2x + 1) − 1.

Vilka [71]

Answer:

(9/2,0) and (0,-1)

Step-by-step explanation:

y(0) = log(1)-1 = -1

y=0 when log(2x+1) = 1

2x+1 = 10

x = 9/2

6 0

2 years ago

An open-top box is to be made from a 70-centimeter by 96-centimeter piece of plastic by removing a square from each corner of th

elixir [45]

Answer:

$177 \frac{7}{9} cm^2$

Step-by-step explanation:

Length of the Plastic Sheet= 96cm

Width of the plastic Sheet =70cm

If a square of side x is cut from each corner of the plastic sheet to form the box.

Length of the box=96-2x

Width of the box=70-2x

Height of the box =x

Volume of the box = LWH

Volume=(96-2x)(70-2x)x

The maximum volume of the box is obtained at the point where the derivative is zero.

$V=(96-2x)(70-2x)x\\V^{'}=4(x-42)(3x-40)$

Setting the derivative to 0.

$4(x-42)(3x-40)=0\\x-42=0\: 3x-40=0\\x=42\:or\: x=\frac{40}{3}$

Since we are looking for the minimum value of x,

$x=\frac{40}{3}\\\text{Area of the Square} = x^2\\=\frac{40}{3} X \frac{40}{3}\\=177 \frac{7}{9} cm^2$

7 0

2 years ago

Consider the expression below

brilliants [131]

This one is my real answer 5{10+3]=40 The other one you can use for extra this one 5{10+25]=35

4 0

2 years ago