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Pavel [41]
4 years ago
9

Plz plz help

Mathematics
1 answer:
viktelen [127]4 years ago
6 0
X^2 - 10 = 3x
X^2 - 3x - 10 = 0
(x - 5) (x + 2) = 0
x = 5 and x = -2
Answer: x = -2
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Joey is 5 years less than three times the age of his son. Joey is 43 years old.
Vikki [24]

Answer:

amogus

Step-by-step explanation:

6 0
3 years ago
A rectangle is placed around a semicircle as shown below. The length of the rectangle is 8 cm. Find the area of the shaded regio
icang [17]

Answer:

Area of the shaded region = 6.88 cm²

Step-by-step explanation:

Area of the shaded region = Area of the rectangle - Area of the semicircle

Area of the rectangle = Length × Width

Length of the rectangle = AD = 8 cm

Width of the rectangle = OP = 4 cm [OP, OB and OC are the radii of the circle which are equal in measures]

Area of the rectangle = 8 × 4 = 32 cm²

Area of the semicircle = \frac{1}{2}\pi r^{2}

                                     = \frac{1}{2}\pi (OP)^{2}

                                     = \frac{1}{2}\pi (4)^{2}

                                     = 25.12 cm²

Area of the shaded region = 32 - 25.12

                                              = 6.88 cm²

3 0
3 years ago
Change each of the following decimals to a fraction. Reduce your answer to its lowest terms.
cluponka [151]
7/100

3/10

21/125

3/ 2500

7/50

I simplified them for you
8 0
3 years ago
Which of the following ( 15, 20, 30, 57 ) is the product of exactly three different prime numbers?
Andrei [34K]

Answer:

30=2*3*5, so it's 30

Step-by-step explanation:

15=3*5, so it's not 15

20=2*2*5, so it's not 20

30=2*3*5, so it's 30

57=19*3, so it's not 57

3 0
3 years ago
Please please help me!
julsineya [31]

Answer:

x=19.2

Step-by-step explanation:

sin(28)=9/x

x=9/sin(28)

x=19.2

4 0
3 years ago
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