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shepuryov [24]
2 years ago
8

21 is 7 more than 14. True or False

Mathematics
1 answer:
nignag [31]2 years ago
6 0

True, because 7 + 14 = 21

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Find the equation of the circle with center at (3,-2) and radius of 3.
AURORKA [14]

Answer:

The equation of the circle is (x - 3)² + (y + 2)² = 9

Step-by-step explanation:

The form of the equation of a circle is (x - h)² + (y - k)² = r², where

  • h is the x-coordinate center of the circle
  • k is the y-coordinate of the center of the circle
  • r is the radius of the circle

∵ The center of a circle is (3, -2)

∴ x-coordinate of the center is 3

∴ y-coordinate of the center is -2

∴ h = 3 and k = -2

∵ The radius of the circle is 3

∴ r = 3

→ Substitute them in the form of the equation above

∵ (x - 3)² + (y - -2)² = (3)²

∴ (x - 3)² + (y + 2)² = 9

∴ The equation of the circle is (x - 3)² + (y + 2)² = 9

3 0
3 years ago
Solve for x.
Ilia_Sergeevich [38]
<span>x = {-4, 4}
</span>
<span>Divide each side by '5'. x2 = 16 Simplifying x2 = 16 Take the square root of each side: x = {-4, 4}</span>
5 0
4 years ago
Read 2 more answers
A/b(2x-12)=c/d solve for x
GenaCL600 [577]

Let's solve for x.

Layout equation:

a/b

(2x−12)=c/d

Step 1: Multiply both sides by b.

2ax−12a=bc/d

Step 2: Multiply both sides by d.

2adx−12ad=bc

Step 3: Add 12ad to both sides.

2adx−12ad+12ad=bc+12ad

2adx=12ad+bc

Step 4: Divide both sides by 2ad.

2adx/2ad=12ad+bc/2ad

So the answer is x=12ad+bc/2ad.

8 0
4 years ago
Read 2 more answers
There are 39.37 inches in 1meter. Tell whether the statement is true or false
Nimfa-mama [501]

Answer:

False

Step-by-step explanation:

This is false because 1 meter has 36 inches.

8 0
4 years ago
Read 2 more answers
The coffee counter charges ?"$11.00" per pound for kenyan french roast coffee and ?"$13.00" per pound for sumatra coffee. How mu
zloy xaker [14]

Answer: The answer is 13 ponds of each type should be used.

Step-by-step explanation:  Given that the coffee counter charges $11.00 per pound for kenyan french roast coffee and $13.00 per pound for sumatra coffee. We are to find the quantity of each type that should be used to make a 26 pound blend that sells for $12.00 per pound.

Let 'x' pound and 'y' pound of  kenyan french roast coffee and sumatra coffee be used in the mixture of 26 pound.

So, we have

x+y=26,~~~~~~~~~~~~~~~~~~~~~~(A)\\\\11x+13y=12\times 26.~~~~~~~~~~(B)

Multiplying equation (A) by 11 and subtracting from equation (B), we have

13y-11y=12\times26-11\times26\\\\\Rightarrow 2y=26\\\\\Rightarrow y=13,

and from equation (A),

x=26-13=13.

Thus, 13 pounds of each type of coffee should be used.

8 0
3 years ago
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