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3 years ago

Please answer this correctly

Mathematics

2 answers:

Julli [10]3 years ago

5 0

Answer:

416

Step-by-step explanation:

plz mark brainliest!

photoshop1234 [79]3 years ago

3 0

Answer:

385

Step-by-step explanation:

use l x w

14x19

16x3

7x10

385

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What is an equation of a circle whose center is at (2, -4) and is tangent to the line x = -2

n200080 [17]

Answer:

$(x-2)^{2} +(y+4)^{2} = \frac{4}{5}$

Step-by-step explanation:

Given that the center of the circle is: (2, -4)

tangent to the line x = -2

The equation of a circle has the following formula:

$(x-a)^{2} +(y-b)^{2} = r^{2}$ where a, b is the center and r is the radius

The distance between the circle and the tangent line is:

d = $\frac{2*1 + 2}{\sqrt{2^{2}+4^{2}} }$ = $2\frac{\sqrt{5} }{5}$

d = r so $d^{2} =r^{2}$ = $(2\frac{\sqrt{5} }{5})^{2}$ = $\frac{4}{5}$

the equation of the circle is:

$(x-2)^{2} +(y+4)^{2} = \frac{4}{5}$

8 0

3 years ago

The answers of this question

Delicious77 [7]

Answer:

1. 1/2 × 7 × 6 = 21

answer is b. 21 cm²

2. answer is d. 3

3. answer is c

4. answer is b

6 0

3 years ago

F=1.8c+32 the high temperature in a mountain city was 15c what is the high temperature in degrees Fahrenheit

ololo11 [35]

F = (1.8 x 15) +32
F = (27) + 32
F = 59

5 0

3 years ago

C = -y - a/b Solve the variable a Can you please show each step

Dafna1 [17]

C=-y-a/b
Multiply c and y with b
-bc=yb-a
-bc-yb=a

3 0

3 years ago

There is a 60% chance of rain on Saturday and a 20% chance of rain on Sunday. Assume that the event that it rains on Saturday is

Vsevolod [243]

Answer:

$0.56$

Step-by-step explanation:

GIVEN: There is a $60\%$ chance of rain on Saturday and a $20\%$ chance of rain on Sunday. Assume that the event that it rains on Saturday is independent of the event that it rains on Sunday.

TO FIND: What is the probability that it rains on exactly one day over the weekend.

SOLUTION:

Probability of rain on Saturday $P(A)=0.6$

Probability of not raining on Saturday $P(A^{'}) =1-0.6=0.4$

Probability of rain on Sunday $P(B)=0.2$

Probability of not raining on Saturday $P(B^{'})=1-0.2=0.8$

Probability of raining exactly one day over the weekend

$=\text{Probability it rains only on Saturday}+\text{Probability it rains only on Sunday}$

$=P(A)\times P(B^{'})+P(B)\times P(A^{'})$

$=0.6\times0.8+0.2\times0.4$

$=0.56$

Hence probability of raining exactly only one day over the weekend is $0.56$

5 0

4 years ago