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Schach [20]
3 years ago
10

Find the area of the shaded region. Use 3.14 for pi.

Mathematics
1 answer:
o-na [289]3 years ago
7 0

Answer:

50.88

Step-by-step explanation:

( 3.14 × (8/2)² ) / 2 = 25.12

{ 8 × (15-4) } / 2 = 44

( 15 × 8 ) - ( 25.12 + 44 ) = 50.88

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17. Solve the following:<br> x – 3y = 5<br> 5x – 2y = -1
Phantasy [73]

Answer:

(- 1, - 2 )

Step-by-step explanation:

Given the 2 equations

x - 3y = 5 → (1)

5x - 2y = - 1 → (2)

Rearrange (1) expressing x in terms of y by adding 3y to both sides

x = 5 + 3y → (3)

Substitute x = 5 + 3y in (2)

5(5 + 3y) - 2y = - 1 ← distribute left side

25 + 15y - 2y = - 1

25 + 13y = - 1 ( subtract 25 from both sides )

13y = - 26 ( divide both sides by 13 )

y = - 2

Substitute y = - 2 in (3) for corresponding value of x

x = 5 + (3 × - 2) = 5 - 6 = - 1

Solution is (- 1, - 2 )

8 0
3 years ago
Sodium is a reactive metal. chlorine is a reactive gas. these two elements combine to form a
11Alexandr11 [23.1K]
A and d seem correct to me.

b and c are definitely wrong.


8 0
3 years ago
Solve for “z.”<br><br> Please help!
Darya [45]

Answer: Z=5

Step-by-step explanation:

Solve the rational equation by combining expression and isolating the variable z

7 0
3 years ago
A high-interest savings account pays 5.5% interest compounded annually. If $300 is deposited initially and again at the first of
inessss [21]
That is an annuity and use the attached formula.

Total = 300 * [(1.055)^11 -1] / .055 -300
Total = 300 * <span> <span> <span> 1.8020924036  </span> </span> </span> -1 /.055 -300
Total = 300 * <span>.8020924036 / .055 - 300
</span>Total = 300 * <span> <span> <span> 14.5834982473 </span> </span> </span> -300
Total = <span> <span> <span> 4375.0494741818 </span> </span> </span> -300
Total = <span>4075.05


</span>

4 0
3 years ago
Please help me out with these slopes.
inysia [295]
Remember, the slope formula is y2-y1 over x2-x1. To plug numbers into the formula, find two points. Then, you substitute the points into the formula.
3 0
3 years ago
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