2 years ago

Which of the following situations can be represented by the expression 3n – 15 ? Select all that apply.

Mathematics

1 answer:

densk [106]2 years ago

6 0

Answer: B

Step-by-step explanation:

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How do I solve this equation? 3|13-2t|=15

Nikolay [14]

$3 |13 - 2t | =15$ ⇒ $|13-2t| = 15\div3$ ⇒ $\boxed {|13-2t| = 5}$

$\hbox {We have two equations : 1. } |13-2t|=5$
$2.|13-2t|=-5$

$\hbox{The first: }$ ⇒ $13-2t=5$ ⇒ $2t=13-5$ ⇒ $2t=8$ ⇒ $\boxed {t=4}$

$\hbox { The second: } 13-2t=-5$ ⇒ $2t=13-(-5)=18$ ⇒ $\boxed {t=9}$

5 0

3 years ago

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In the triangle above, the measure of A is 66°, and the measure of B is 68°. What is the measure of C?

valentina_108 [34]

Answer:

46°

Step-by-step explanation:

Given that :

Angle, A = 66°

Angle B = 68°

The sum of angles in a triangle is given by :

A + B + C = 180° (sum if angles una triangle)

66° + 68° + C = 180°

134° + C = 180°

C = 180° - 134°

C = 46°

Hence, angle C is 46°

6 0

3 years ago

What is the standard form of y=(x-4)^2-6

Ahat [919]

Answer:

standard form : 2x + y = -2

8 0

3 years ago

A test for marijuana usage was tried on 170 subjects who did not use marijuana. The test result was wrong 8 times.a. Based on th

motikmotik

Answer:

a. 0.047

b. Unlikely.

Step-by-step explanation:

a. The probability of a test result being wrong for a person not using mrijuana = 8 / 170 = 0.047.

b. As the probability for a wrong result is < 0.05 we can say that the test is unlikely to be wrong.

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3 years ago

Cost to store: $140

MrRa [10]

Answer:

175

Step-by-step explanation:

140

140/4=35

140+35=175

8 0

2 years ago

Which of the following situations can be represented by the expression 3n – 15 ? Select all that apply. ​

Which of the following situations can be represented by the expression 3n – 15 ? Select all that apply.