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3 years ago

NEED HELP ( due tomorrow )

Mathematics

1 answer:

mariarad [96]3 years ago

6 0

What is it you need help with?

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PLEASE LED ME THE ANSWER<br> ILL GIVE YOU 20 POINTS

krok68 [10]

Answer:

DEC+DEF=180

DEC=180-116

DEC=64°

in triangle DCE

angle D+angle C+angle E=180

7y+6+4y+64=180

11y+70=180

11y=180-70

11y=110

y=110/11

y=10°

angle C=4y

=4(10)

=40°

3 0

3 years ago

A figure has been dilated from the origin by a scale factor of

Darya [45]

Answer:

See Explanation

Step-by-step explanation:

The question has missing details. So, I'll solve using a general assumption.

Let one of the coordinates of the figure be

$A = (x,y)$

Let the scale factor be n

When dilated, the new figure is:

$A' = n * A$

$A' = n * (x,y)$

To return the image back to the original figure, the new scale factor mus be a reciprocal of the previous scale factor i.e. $\frac{1}{n}$

So:

$A = A' * \frac{1}{n}$

Substitute n(x,y) for A';

$A = n(x,y) * \frac{1}{n}$

$A = \frac{n(x,y)}{n}$

$A = (x,y)$

Take for instance:

$A = (2,3)$

$n = 2$ -- scale factor

$A' = n * A$

$A' = 2 * (2,3)$

$A' = (4,6)$

To get A from A', using the analysis above

$A = \frac{1}{2} * (4,6)$

$A = (2,3)$

6 0

3 years ago

Solve for x.<br> 11x – 32 = 31 + 8x<br> x = [?]

german

Answer:

x = 21

Step-by-step explanation:

11x – 32 = 31 + 8x

11x = 63 + 8x

3x = 63

x = 21

4 0

3 years ago

Write the equation of the line shown.

defon

4,5 is the answer I think

6 0

3 years ago

Algebraic expressions describe a ________________. They can be as

Jobisdone [24]

Answer:

Algebraic expressions describe an algebraic operation. They can be as simple as a number, or they can include integer constants of numbers, variables, and symbols.

Step-by-step explanation:

7 0

2 years ago