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2 years ago

Pls help me with this!!

Mathematics

2 answers:

Mashcka [7]2 years ago

5 0

Answer:

Step-by-step explanation:

Assuming the dilatation is centred at the origin.

Then multiply each set of coordinates by the scale factor $\frac{1}{3}$ , thus

(- 12, 3 ) → $\frac{1}{3}$ (- 12), $\frac{1}{3}$ (3) ) → (- 4, 1 )

(0, 6 ) → ( $\frac{1}{3}$ (0), $\frac{1}{3}$ (6) ) → (0, 2 )

(3, - 3 ) → ( $\frac{1}{3}$ (3), $\frac{1}{3}$ ( - 3 ) ) → (1, - 1 )

ivanzaharov [21]2 years ago

4 0

W33D

Step-by-step explanation:

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A librarian wants to spend no more than $800 on some new desks and chairs for the library. The librarian decides to spend $320 o

Ratling [72]

Answer:

I think 20

Step-by-step explanation:

480/24

6 0

3 years ago

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Kylas class packs lunches for the local shelter they make the same number of sandwiches each minute in 5 minutes the class makes

SpyIntel [72]

Answer:

640

Step-by-step explanation:

3 0

3 years ago

Find the equation of the line that passes through the following two points: (3, -7) and (7, 2)

Wittaler [7]

Answer:

$y=\frac{9}{4}x-\frac{55}{4}$

Step-by-step explanation:

Slope-intercept form: y = mx + b

Slope formula: $\frac{y2-y1}{x2-x1}$

Given points: (3, -7), (7, 2)

(3, -7) = (x1, y1)

(7, 2) = (x2, y2)

To write the equation in slope-intercept form, we need to find the slope(m) and the y-intercept(b) of the equation.

First, let's find the slope. To do this, input the given points into the slope formula:

$\frac{2-(-7)}{7-3}$

Simplify:

2 - (-7) = 2 + 7 = 9

7 - 3 = 4

$\frac{9}{4}$

The slope is $\frac{9}{4}$ .

To find the y-intercept, input the slope and one of the given points(in this example I'll use point (7, 2)) into the equation and solve for b:

$2=\frac{9}{4}(7)+b$

$2=\frac{63}{4}+b$

$-\frac{55}{4} =b$

The y-intercept is $-\frac{55}{4}$ .

Now that we know the slope and the y-intercept, we can write the equation:

$y=\frac{9}{4}x-\frac{55}{4}$

6 0

3 years ago

You have 100 feet of fencing and decide to make a rectangular garden. What is the largest area enclosed

k0ka [10]

Answer:

625 ft^2

Step-by-step explanation:

Given

$P = 100$ --- perimeter

Required

The largest area

The perimeter is calculated as:

$P = 2 * ( L + W)$

So, we have:

$2 * ( L + W) = 100$

Divide both sides by 2

$L + W = 50$

Make L the subject

$L = 50 - W$

The area is calculated as:

$A= L * W$

Substitute $L = 50 - W$

$A= (50 - W) * W$

Open bracket

$A = 50W - W^2$

Differentiate with respect to W

$A' = 50 -2W$

Set to 0; to get the maximum value of W

$50 - 2W = 0$

Collect like terms

$-2W = -50$

Divide by -2

$W = 25$

So, the maximum area is:

$A = 50W - W^2$

$A = 50 * 25 - 25^2$

$A = 1250 - 625$

$A = 625$

3 0

2 years ago

Nevaeh is decorating the Christmas tree. She has 85 red bulbs, 76 green bulbs, 49 yellow bulbs, and 52 blue bulbs.

vodka [1.7K]

Answer:

A) Red and Blue Bulbs

B) 262 lightbulbs.

Step-by-step explanation:

A) red and blue = 85+52=137

Yellow and green = 76+49=125

Answer to A is Red and Blue bulbs

Bulbs in all: We already know from A that there are 137 and 125 so 137+125 is 262.

Hope this helps plz hit the crown :D

5 0

3 years ago