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aleksley [76]
3 years ago
10

Let ∠D be an acute angle such that cosD=0.64. Use a calculator to approximate the measure of ∠D to the nearest tenth of a degree

.
Mathematics
2 answers:
Aleks04 [339]3 years ago
7 0

Answer:

50.2 degreees

Step-by-step explanation:

I did math

sertanlavr [38]3 years ago
4 0

Answer:

50.2°

Step-by-step explanation:

\cos \angle D = 0.64\\\\\angle D = \cos^{-1}(0.64)\\\\\angle D = 50.20818\\\\\angle D \approx 50.2\degree

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The sum of two numbers is 39 and the difference is 3. What are the numbers?
frosja888 [35]

Answer: 21 & 18

Step-by-step explanation:

Sum of two numbers is 39

Difference is 3

Let the numbers be x & y

X+y=39........equation 1

X-y=3...........equation 2

X=3+y............equation 3

Substitute equation 3 into equation 1

(3+y)+y=39

3+y+y=39

3+2y=39

2y=39-3

2y=36

Y=36/2

Y=18

Substitute for y in equation 2

X-y=3

X-18=3

X=3+18

X=21

The two numbers are 21 & 18

8 0
3 years ago
A house was valued at $292,000 . Over several years, the value increased by 8%, giving the house a new value.
kkurt [141]

Answer:

315,360 I had to assume you needed that number, 292000+8%=315360

8 0
3 years ago
Decompose 2/6 into 4 equal lengths
anyanavicka [17]
I'm not 100% sure, but I'm pretty sure it's 1/12, 1/12, 1/12, 1/12
4 0
3 years ago
Find the missing side of a triangle with leg length 10 yards and Hypotenuse 26 yards?
Elan Coil [88]

Answer:

The answer is 24 yards.

Step-by-step explanation:

a² + b² = c²

10² + b² = 26²

100 + b = 676

676 - 100 = 576

√576 = 24 yards

7 0
3 years ago
Here are two polygons on a grid.
NNADVOKAT [17]

Answer:

No.

Step-by-step explanation:

For polygon PQRST to be considered a scaled copy of polygon ABCDE, it means every segments of polygon ABCDE were increased proportionally by a scale factor.

The segments in polygon PQRST were not gotten using the same scale factor, hence, it is not a scaled copy of the original polygon, ABCDE.

Segment CD = 2 units, it corresponds to segment RS = 4 units. Scale factor = RS/CD = 4/2 = 2

Segment BC = 1 unit, it corresponds to segment QR = 1 unit. Scale factor = QR/BC = 1/1 = 1 units.

Varying scale factor shows polygon PQRST is not a scaled copy of polygon ABCDE.

7 0
3 years ago
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