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dezoksy [38]
3 years ago
12

Helpppppp Unit rate with fractions. A crew of landscapers mowed 1/5 of a lawn in 20

Mathematics
1 answer:
cluponka [151]3 years ago
7 0

Answer:

1/5 lawn = 20 min.

    ?      =    1 min

0.05 lawn in 1 minute

rate of 0.05 mowed per minute.

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What is the point-slope form of a line that has a slope of -4 and passes through point (-3, 1)?
andrew11 [14]

Answer:

B. y - 1 = -4[x - (-3)]

Step-by-step explanation:

Given:

Slope = -4

Point = (-3, 1)

Required:

Point-slope form of the line

Solution:

Equation of a line in Point-slope form is given as y - b = m(x - a).

Where,

a = -3

b = 1

m = -4

Plug in the values

y - 1 = -4[x - (-3)]

3 0
3 years ago
Given: m∠B = 46°; m∠C = 45°; m∠R = 46°; m∠T = 89° Prove: △ABC ~ △TRS Triangles A B C and T R S are shown. Angles A B C and T R S
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Answer:

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Step-by-step explanation:

4 0
3 years ago
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A certain virus infects one in every 200 people. a test used to detect the virus in a person is positive 70​% of the time when t
V125BC [204]

We're told that

P(A)=\dfrac1{200}=0.005\implies P(A^C)=0.995

P(B\mid A)=0.7

P(B\mid A^C)=0.05

a. We want to find P(A\mid B). By definition of conditional probability,

P(A\mid B)=\dfrac{P(A\cap B)}{P(B)}

By the law of total probability,

P(B)=P(B\cap A)+P(B\cap A^C)=P(B\mid A)P(A)+P(B\mid A^C)P(A^C)

Then

P(A\mid B)=\dfrac{P(B\mid A)P(A)}{P(B\mid A)P(A)+P(B\mid A^C)P(A^C)}\approx0.0657

(the first equality is Bayes' theorem)

b. We want to find P(A^C\mid B^C).

P(A^C\mid B^C)=\dfrac{P(A^C\cap B^C)}{P(B^C)}=\dfrac{P(B^C\mid A^C)P(A^C)}{1-P(B)}\approx0.9984

since P(B^C\mid A^C)=1-P(B\mid A^C).

4 0
3 years ago
Help me please:) thanks
xeze [42]

Answer:

C. 21.98

Step-by-step explanation:

In this case, you would have to multiply 3.14 times 7. If you didn't have the diameter, and all you had was the radius, you had find half of seven, which is 3.5, multiply that by 2, and finally multiply that answer by 3.14. Hope this helps! Have a nice day :D

5 0
3 years ago
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Which expression are equivalent to 4(9+3) ?
Maslowich
This expression is equivalent (9+3)4
8 0
3 years ago
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