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Sergio039 [100]
3 years ago
6

What’s the answer to this equation 4x7=(__x5)+(4x2)

Mathematics
1 answer:
motikmotik3 years ago
5 0

Answer:

4

Step-by-step explanation:

4X7 =28

4X2 =8

28-8 =20/5

=4

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In the U.S thirteen of twenty cans are recycled. What % of cans are recycled?
madam [21]

A percent is how many out of 100.

13/20 is how many out of 100?

You multiply the top and bottom by 5, as 5x20 is 100

13x5 is 65

Therefore, 65 out of every hundred cans, or 65%, are recycled

8 0
4 years ago
A rectangle has vertices E(-4, 8), F(2, 8), G(2, -2) and H(-4, -2). The rectangle is dilated with the origin as the center of di
Marizza181 [45]

Answer:

The dilation on any point of the rectangle is P'(x,y) = \frac{5}{2}\cdot P(x,y).

Step-by-step explanation:

From Linear Algebra, we define the dilation of a point by means of the following definition:

G'(x,y) = O(x,y) +k\cdot [G(x,y)-O(x,y)] (1)

Where:

G(x,y) - Coordinates of the point G, dimensionless.

O(x,y) - Center of dilation, dimensionless.

k - Scale factor, dimensionless.

G'(x,y) - Coordinates of the point G', dimensionless.

If we know that O(x,y) = (0,0), G(x,y) =(2,-2) and G'(x,y) =(5,-5), then scale factor is:

(5,-5) = (0,0) +k\cdot [(2,-2)-(0,0)]

(5,-5) = (2\cdot k, -2\cdot k)

k = \frac{5}{2}

The dilation on any point of the rectangle is:

P'(x,y) = (0,0) + \frac{5}{2}\cdot [P(x,y)-(0,0)]

P'(x,y) = \frac{5}{2}\cdot P(x,y) (2)

The dilation on any point of the rectangle is P'(x,y) = \frac{5}{2}\cdot P(x,y).

5 0
3 years ago
I did the first part I just need the answer for the second part, please help me
Nana76 [90]

Answer:

66000

Step-by-step explanation:

since the graph represents a proprtional relationship the equation of the graph must be written this way :

y = ax where  a is the slope

you can notice that 2 goes with 24000

so 24000 = 2a then x = 24000/2= 12000

so a = 12000

now replace x with 5.5

y= 5.5*12000=66000

6 0
3 years ago
Please explain how you got the answer
Flura [38]
\bf (-y+4)(2y-1)\implies \stackrel{(-y)(2y-1)}{-2y^2+y}~~+~~\stackrel{(4)(2y-1)}{8y-4}\implies -2y^2+9y-4

notice, just like in any multiplication, you can simply multiply each term of either polynomial times the other, sum them up and then cancel like-terms.
8 0
3 years ago
Read 2 more answers
Question 1<br> Evaluate 10m + 7n/3 +n when m= -3 &amp; n= 3
exis [7]

Answer:

-20

Step-by-step explanation:

6 0
4 years ago
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