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2 years ago

PLS HELP WILL MARK BRAINLIEST! NO FAKE ANSWERS!Name the circle and find mDCF

Mathematics

2 answers:

den301095 [7]2 years ago

8 0

Answer:

Step-by-step explanation:

A circle is named by its center.

Name of the circle: Circle B

∠DCF = 90° {angle on a semicircle is right angle}

Mariulka [41]2 years ago

3 0

Answer: B∠DCF = 90° I hope this helps!

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Help with the following problem please

Effectus [21]

Given:
The largest circle has a radius of R=7 units.
Let x be the radius of the large shaded circle.
The small shaded circles have a radius of 1/5 of the large shaded circle.
=> the small shaded circles have a radius of r=x/5

By adding up radii, we have the equation
2(r+x+r)=2(x/5+x+x/5)=2R=2*7=14
Simplify:
7x/5=14/2
x=5
=> r=1

Area of outer circle = $\pi R^2=\pi7^2=49\pi$
Area of large shaded circle = $\pi x^2=\pi5^2=25\pi$
Area of 4 small shaded circles = $4\pi r^2=4\pi1^2=4\pi$
Total area of shaded circles = $25\pi+4\pi=29\pi$

Shaded area as a fraction of that of the outer circle
$=\frac{29\pi}{49\pi}=29/49$

3 0

3 years ago

Maddie's backyard is 25 meters by 25 meters. She wants to put a square cement patio in her backyard. She does not want the patio

luda_lava [24]

The inequality that represents the possible length of the patio is √A < 625.

<h3 /><h3>How to represent an inequality?</h3>

Maddie's backyard is 25 meters by 25 meters.

Therefore,

area of the backyard = 25 × 25 = 625 m²

Hence,

She wants to put a square cement patio in her backyard.

A = area of the patio, in square meters.

Hence,

area of the backyard = 625 m²

Therefore, the inequality that represents the possible length of the patio is √A < 625.

learn more on inequality here: brainly.com/question/23919881

#SPJ1

3 0

2 years ago

Find the Perimeter of the figure below, composed of a rectangle and two semicircles. Round to the nearest tenths place.

NISA [10]

281.25 is the answer i think

5 0

3 years ago

X + (4 1/3)= (-2 5/6)

vladimir1956 [14]

Answer:

x+((4 + 1/3))=(-(2 + 5/6))

6x = -43

x≈ -7.166667

3 0

3 years ago

TIMED

ss7ja [257]

Answer:

y>0

Step-by-step explanation:

This is because no matter what x-value you enter, the fact that it's an even exponent will make the y-value always positive. And regardless of the 4 in the exponent, you can still have values less than 4 (but still positive).

4 0

4 years ago