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rosijanka [135]

3 years ago

9

1. Which of the following is not a property of mathematical proofs?

2 answers:

mario62 [17]3 years ago

8 0

Answer: inductive reasoning

Step-by-step explanation: Took the test.

aleksley [76]3 years ago

4 0

Which is not a property of mathematical proofs?

Conclusion has nothing to do with math

it is for writeing.

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a sign at a store said all purchases were 40% off.which is another way this nuber could have been written A .1/5 off B.1/4 off C

rosijanka [135]

To concert a percentage into a fraction, first convert it into a decimal. To change a percentage into a decimal, you have to take away the percentage sign and move the decimal point two places to the left. Thus, 40% = 0.40 = 0.4 Now, to change the decimal into a fraction, you multiply both the numerator and the denominator (1) by 10. 0.4/1 = 4/10 However, in this case the fraction is in simplest form. To simplify a fraction, you have to divide the numerator and the denominator by the GCF, which in this case is 2. 4/10 = 2/5 Therefore, your answer is D. 2/5 off.

3 0

3 years ago

Suppose that 3000 drivers in Wakanda were randomly breath-tested on 21 April 2019 and 116 were above the limit of 0.05 blood- al

UkoKoshka [18]

4000 drivers were tested

5 0

3 years ago

Please solve: <br> 3.15=X-6.85

Andrew [12]

Answer:

X=10

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

A person stands 10 meters east of an intersection and watches a car driving towards the intersection from the north at 13 meters

In-s [12.5K]

Answer:

Therefore the rate change of distance between the car and the person at the instant, the car is 24 m from the intersection is 12 m/s.

Step-by-step explanation:

Given that,

A person stand 10 meters east of an intersection and watches a car driving towards the intersection from the north at 13 m/s.

From Pythagorean Theorem,

(The distance between car and person)²= (The distance of the car from intersection)²+ (The distance of the person from intersection)²+

Assume that the distance of the car from the intersection and from the person be x and y at any time t respectively.

∴y²= x²+10²

$\Rightarrow y=\sqrt{x^2+100}$

Differentiating with respect to t

$\frac{dy}{dt}=\frac{1}{2\sqrt{x^2+100}}. 2x\frac{dx}{dt}$

$\Rightarrow \frac{dy}{dt}=\frac{x}{\sqrt{x^2+100}}. \frac{dx}{dt}$

Since the car driving towards the intersection at 13 m/s.

so, $\frac{dx}{dt}=-13$

$\therefore \frac{dy}{dt}=\frac{x}{\sqrt{x^2+100}}.(-13)$

Now

$\therefore \frac{dy}{dt}|_{x=24}=\frac{24}{\sqrt{24^2+100}}.(-13)$

$=\frac{24\times (-13)}{\sqrt{676}}$

$=\frac{24\times (-13)}{26}$

= -12 m/s

Negative sign denotes the distance between the car and the person decrease.

Therefore the rate change of distance between the car and the person at the instant, the car is 24 m from the intersection is 12 m/s.

8 0

3 years ago

Edwin is making brownies. He has m cups of flour. He realized that he needs 3 more flour

const2013 [10]

Answer:

m+3=amount of cups he needs to make brownies

Step-by-step explanation:

If he has m amount of cups and he needs 3 more to make the brownies, If you just add 3 to m amount it should be the right answer

Sorry if im wrong

5 0

3 years ago