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Mazyrski [523]
4 years ago
8

Which equation represents a circle with a center at (–3, –5) and a radius of 6 units?

Mathematics
2 answers:
Ipatiy [6.2K]4 years ago
6 0
My answer:

(x+3)^2+(x+5)^2=6^2

which is:

(x+3)^2+(x+5)^2=36
dolphi86 [110]4 years ago
5 0
(x+3)²+(x+5)²=6²
(x+3)²+(x+5)²=36

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Which is the equation of an ellipse centered at the origin with foci on x-axis, x-intercepts +7, -7 and y-intercepts +2,
Aleks04 [339]
We know that
<span>foci on x-axis-------> is a ellipse with horizontal major axis

the equation is
(x</span>²/a²)+(y²/b²)=1

major axis is th<span>e </span>x<span>-axis with length </span><span>2<span>a
2a=14--------> a=7

</span></span>minor axis is the y<span>-axis with length </span><span>2<span>b
2b=4-----> b=2

the equation is
</span></span>(x²/a²)+(y²/b²)=1------> (x²/7²)+(y²/2²)=1-----> (x²/49)+(y²/4)=1

the answer is
(x²/49)+(y²/4)=1

see the attached figure

7 0
3 years ago
Gurney can mow the lawn in 3.5 hours. Moneo can mow the lawn in 4.5 hours. How long will it take them to mow the lawn if they wo
Amiraneli [1.4K]

Answer: 8 hours I presume

5 0
4 years ago
What is the area of a pizza with a diameter of 12 inches? Round to the nearest tenth. Use 3.14 for pi.
Flauer [41]

Answer:

\boxed {\boxed {\sf a \approx 113.0 \ in^2}}

Step-by-step explanation:

Assuming this pizza is a circle, we can use this formula for area:

a= \pi r^2

1. Find Radius

We are given the diameter: 12 inches, but the formula uses radius.

The radius is half the diameter, or:

r=\frac{d}{2}

r=\frac{12 \ in}{2}

r= 6 \ in

2. Calculate Area

Substitute the radius (6 inches) in for r. The question also asks us to use 3.14 for pi.

a= (3.14)(6 \ in)^2

Solve the exponent.

  • (6 in)²= 6 in* 6 in= 36 in²

a= (3.14)(36 \ in^2)

Multiply.

a= 113.04 \ in^2

3. Round

The question asks us to round to the nearest tenth.

The 4 in the hundredth place tells us to leave the 0 in the tenth place.

a \approx 113.0 \ in^2

The area of the pizza is about 113.0 square inches.

7 0
3 years ago
The endpoints of AB are -1 and 9. Find the coordinate of the point P that partitions the segment in the ratio 1:4
masya89 [10]

Answer:

1

Step-by-step explanation:

P = -1 + [ 1/(1+4) × (9- (-1)) ]

= -1 + (1/5 × 10)

= -1 +2

= 1

7 0
3 years ago
Read 2 more answers
What is the answer of a and b
ziro4ka [17]

Answer:

G (4 , -4)

Area CDEF : 176

Step-by-step explanation:

CD ⊥ x axis

FE ⊥ x axis

Point G (x , y)     x = 4 and y = -4

G (4 , -4)

CD = 5 + 4 = 9

FE = 7 + 6 = 13

DG = 12 + 4 = 16

Area CDEF = (Cd + FE) x DG / 2 = (9 + 13) x 16 /2 = 176

6 0
4 years ago
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