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3 years ago

Can someone explain how I solve this problem?

Mathematics

2 answers:

Fynjy0 [20]3 years ago

7 0

You know that there are 135 degrees in angle BCD (because all regular octagons have 135 degrees in all of their angles). Subtracting 135 from 180 degrees in a line gives you 180-135=C, 45 degrees. Hope this helps!

ElenaW [278]3 years ago

3 0

Find the measurement of Q, C, and D.
It looks like D, C, and Q is equal to 45°

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A right triangle is shown below. What is cos EFD?<br> Will make BRAINLIEST

rjkz [21]

Are you looking for the length from E to F?

8 0

3 years ago

On a linear X temperature scale, water freezes at −115.0°X and boils at 325.0°X. On a linear Y temperature scale, water freezes

belka [17]

Answer:

The current temperature on the X scale is 1150 °X.

Step-by-step explanation:

Let is determine first the ratio of change in X linear temperature scale to change in Y linear temperature scale:

$r = \frac{\Delta T_{X}}{\Delta T_{Y}}$

$r = \frac{325\,^{\circ}X-(-115\,^{\circ}X)}{-25\,^{\circ}Y - (-65.00\,^{\circ}Y)}$

$r = 11\,\frac{^{\circ}X}{^{\circ}Y}$

The difference between current temperature in Y linear scale with respect to freezing point is:

$\Delta T_{Y} = 50\,^{\circ}Y - (-65\,^{\circ}Y)$

$\Delta T_{Y} = 115\,^{\circ}Y$

The change in X linear scale is:

$\Delta T_{X} = r\cdot \Delta T_{Y}$

$\Delta T_{X} = \left(11\,\frac{^{\circ}X}{^{\circ}Y} \right)\cdot (115\,^{\circ}Y)$

$\Delta T_{X} = 1265\,^{\circ}X$

Lastly, the current temperature on the X scale is:

$T_{X} = -115\,^{\circ}X + 1265\,^{\circ}X$

$T_{X} = 1150\,^{\circ}X$

The current temperature on the X scale is 1150 °X.

5 0

3 years ago

The nth term of a sequence is n^2 -n-2 .find the sum of the first and third terms

Troyanec [42]

Answer:

Step-by-step explanation:

substitute n=1 and n=3 in the given equation

1 st term is (1)^2-1-2 = 1 -1 -2 = -2

3rd term is (3)^2-3-2 = 9-3-2=4

sum of 1st and 3rd term is -2 + 4 = 2

8 0

4 years ago

PLEASE ANSWER ASAP WILL MARK BRAINLIEST!!

Ber [7]

Answer:

Step-by-step explanation:

(5/25)(15/24)

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3 years ago

Which choice represents the result when 4 + 6m is subtracted from 15m? Select ALL that apply.

Amiraneli [1.4K]

Answer = 9m + 4

just do 15m subtracted from 6m to get 9m and let the 4 be

7 0

4 years ago

Read 2 more answers