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3 years ago

6

Jenny sent 640 texts in 8 days. At this rate, how many texts did she send in 3 days?

2 answers:

koban [17]3 years ago

8 0

Answer:

240 texts

Step-by-step explanation:

First we need to find out how many texts in 1 day

640 divided by 8 is 80

80 times 3 is 240

Please mark brainliest :D

netineya [11]3 years ago

4 0

Answer:

240 texts

Step-by-step explanation:

$\frac{640}{8} =\frac{x}{3} \\\\8x=1920\\x=240$

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You will get Brainly if if you answer correctly and provide step-by-step explanation pls help me I need help with five

lord [1]

Answer:

$2x^2+xy-3y^2$

Step-by-step explanation:

Start by taking everything out of the parentheses:

$3x^2-2xy-2y^2-x^2-(-3xy)-(y^2)$

Note two negatives make a positive:

$3x^2-2xy-2y^2-x^2+3xy-y^2$

Combine like terms:

$3x^2-x^2-2xy+3xy-2y^2-y^2$

Simplify

$2x^2+xy-3y^2$

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2 years ago

Please help show work I beg<br><br> A 50 <br> B 13<br> C 12 <br> D 51

Viefleur [7K]

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3 years ago

write the x and y coordinate (in the second and third column, respectively) of dilation of quadrilateral ABCD with vertices A(1,

gayaneshka [121]

Answer:

The coordinates of the dillated vertices are $A'(x,y) = (2,2)$ , $B'(x,y) = (4,4)$ , $C'(x,y) = (8,2)$ and $D'(x,y) = (4,-2)$ .

Step-by-step explanation:

From Linear Algebra, we define dilation by the following equation:

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

Where:

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

$P(x,y)$ - Original point, dimensionless.

$k$ - Scale factor, dimensionless.

$P'(x,y)$ - Dilated point, dimensionless.

If we know that $O(x,y) = (0, 0)$ , $k = 2$ , $A(x,y) = (1,1)$ , $B(x,y) = (2,2)$ , $C(x,y) = (4,1)$ and $D(x,y) = (2,-1)$ , then the dilated points are, respectively:

Point A

$A'(x,y) = O(x,y) + k\cdot [A(x,y)-O(x,y)]$ (2)

$A'(x,y) = (0,0) + 2\cdot [(1,1)-(0,0)]$

$A'(x,y) = (2,2)$

Point B

$B'(x,y) = O(x,y) + k\cdot [B(x,y)-O(x,y)]$ (3)

$B'(x,y) = (0,0) + 2\cdot [(2,2)-(0,0)]$

$B'(x,y) = (4,4)$

Point C

$C'(x,y) = O(x,y) + k\cdot [C(x,y)-O(x,y)]$

$C'(x,y) = (0,0) + 2\cdot [(4,1)-(0,0)]$

$C'(x,y) = (8,2)$

Point D

$D'(x,y) = O(x,y) + k\cdot [D(x,y)-O(x,y)]$

$D'(x,y) = (0,0) + 2\cdot [(2,-1)-(0,0)]$

$D'(x,y) = (4,-2)$

The coordinates of the dillated vertices are $A'(x,y) = (2,2)$ , $B'(x,y) = (4,4)$ , $C'(x,y) = (8,2)$ and $D'(x,y) = (4,-2)$ .

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3 years ago

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zhenek [66]

Answer:

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Step-by-step explanation:

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2 years ago

3ab+2 x -a =2c a=2 b=3 c=7 True or False

ollegr [7]

Answer:

t

Step-by-step explanation:

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2 years ago