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sleet_krkn [62]
3 years ago
13

Simple interest and such

Mathematics
1 answer:
Luda [366]3 years ago
4 0

Answer:

idk im onlyin 7th grade

Step-by-step explanation:

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The perimeter of a circle=πr², where π=22/7. find the area of r=21cm <br>​
Serjik [45]

EXPLAINATION:  \pi r^2=\frac{22}{7} .21^2=\frac{22}{7} .441=\frac{22.441}{7} =\frac{22.63.7}{7} =22.63=1386  

ANSWER: 1386 cm^2

Ok done. Thank to me :>

7 0
2 years ago
Which of the following are solutions to the quadratic equation? Check all that apply x^2 + 12x + 36 = 7
garik1379 [7]

Answer:

x = -6 + \sqrt{7}, x = -6 - \sqrt{7}

Step-by-step explanation:

(x + 6)² = 7

x + 6 = + or - \sqrt{7}

x = -6 + \sqrt{7}, x = -6 - \sqrt{7}

5 0
2 years ago
The speed of light is 3 × 108 meters per second. It take 1.82 × 102 seconds for light to reach Mars. What is the distance, in me
Snowcat [4.5K]

Answer:

D 5.46 x 10^10

Step-by-step explanation:

Recall that  speed is the rate of change of distance with time and may be expressed mathematically as

speed = Distance/time

Distance = speed * time

Hence given that the speed of light

= 3 × 10^8 meters per second

Time taken for light to travel between the given distance

= 1.82 × 10^2 seconds

substituting the given values

Distance = 3 × 10^8 * 1.82 × 10^2

= 5.46 * 10^(8+2)

= 5.46 * 10^10 meters

4 0
2 years ago
I’ve been stuck can someone explain
MariettaO [177]

Answer:

Option (3)

Step-by-step explanation:

From the figure attached,

AB and CD are two chords intersecting at O.

m∠AOD = 37°

m∠AOC + m∠AOD = 180° [Since these angles are supplementary angles]

m∠AOC = 180° - 37°

              = 143°

By the theorem of intersecting chords,

Measure of angle formed is the half of the sum of measures of the arcs intercepted by the angle and vertical angle.

m∠AOC = \frac{1}{2}(\widehat{AC}+\widehat{BD})

143° = \frac{1}{2}[(x+5)+(x-5)]

143° = x

Therefore, Option (3) will be the answer.

3 0
3 years ago
7 (r + 1) = 30.3 what is r
GuDViN [60]

Answer:

3.32857142857 i think

4 0
3 years ago
Read 2 more answers
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