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sasho [114]
4 years ago
13

Angle A is an acute angle in a right triangle

Mathematics
2 answers:
Law Incorporation [45]4 years ago
4 0
Sin=opositeside/hyptonuse
cos=adjacentside/hyptoonse
try and draw a diagram
pretend we gots
acute angle is on left side
right angle is below obtuse angle

so sinA=7/25=left side/hypotonuse
so we need to find other side
pythagorean theorme

a²+b²=c²
7²+b²=25²
49+b²=625
b²=576
b=24

so

sinA=o/h
cosA=a/h

7=o
25=h
24=a

cosA=24/25
Brrunno [24]4 years ago
3 0
Cos= 24/25

7^2+24^2=25^2
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a warehouse store sells 5.5-ounce cans of tuna in packages of 6. a package of 6 cans costs $9.24. the store also sells 6.5-ounce
Allushta [10]
9.24 / (5.5 * 6) = 9.24 / 33 = 0.28 per oz

4.68 / (6.5 * 3) = 4.68 / 19.5 = 0.24 per oz

4.48 / (3.5 * 4) = 4.48 / 14 = 0.32 per oz

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6 0
3 years ago
Read 2 more answers
Solve quadratic equation 10x^2+x-2=0
zhuklara [117]

Answer:

\{-\frac{1}{2} \} \cup \{\frac{2}{5}\}

Step-by-step explanation:

10x^2 + x - 2 = 0; \\ a = 10, b = 1, c = -2; \\ D = b^2 - 4ac = 1^2 - 4 * 10 * (-2) = 1 + 80 = 81 = 9^2, > 0; \\ x_{1, 2} = \frac{-b \pm \sqrt{D}}{2a} = \frac{-1 \pm \sqrt{9^2}}{2 * 10} = \frac{-1 \pm 9}{20} = \left \ [ {{\frac{-1 - 9}{20} = -\frac{10}{20} = -\frac{1}{2}  } \atop {\frac{-1 + 9}{20} = \frac{8}{20} = \frac{2}{5}}} \right.

8 0
2 years ago
Solve each equation. Show your thinking.<br><br> a. 5x-10=30<br><br> b. 3x+8=21
Ksenya-84 [330]
Add ten from both sides and then divide 40 of 5x its 8
B subtract 8 from both sides 13 divide by 3 answer is 13/3
7 0
3 years ago
Read 2 more answers
express the equation a)20 less than a number b)half a number is another number.There sum is 30 c)2/3 if weight of a boy is 32kg
Ivan
A) n-20
b.)30=1/2n+1/2
c.)2/3n=30
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3 0
3 years ago
Find the missing values in the following figures​
jekas [21]

Answer:

15.

  x = 40/9 = 4 4/9

  z = 24/5 = 4 4/5

17.

  x = 50

  y ≈ 11.5

Step-by-step explanation:

15. Corresponding segments are proportional:

  top right side / whole right side = x / 8

  5/(5+4) = x/8

  x = 8(5/9) = 40/9

  x = 4 4/9

__

  right side bottom / right side top = z / 6

  z = 6(4/5) = 24/5

  z = 4 4/5

____

17. The acute angles are complementary:

  x = 90 -40 = 50

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From the Pythagorean theorem:

  y = √(15² -9.6²) = √132.84

  y ≈ 11.5

4 0
3 years ago
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