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Nana76 [90]
3 years ago
13

Gabi tried to solve an equation step by step. \qquad\begin{aligned} 0.1(0.5m+6)&=2\\\\ \\ 0.5m+6&=20&\green{\text{St

ep } 1}\\\\ \\ 0.5m&=14&\blue{\text{Step } 2}\\\\ \\ m&=7&\purple{\text{Step } 3}\\\\ \end{aligned} 0.1(0.5m+6) 0.5m+6 0.5m m ​ =2 =20 =14 =7 ​ Step 1 Step 2 Step 3 ​ Find Gabi's mistake. Choose 1 answer: Choose 1 answer: (Choice A) A \green{\text{Step }1}Step 1start color #28ae7b, start text, S, t, e, p, space, end text, 1, end color #28ae7b (Choice B) B \blue{\text{Step }2}Step 2start color #6495ed, start text, S, t, e, p, space, end text, 2, end color #6495ed (Choice C) C \purple{\text{Step }3}Step 3start color #9d38bd, start text, S, t, e, p, space, end text, 3, end color #9d38bd (Choice D) D Gabi did not make a mistake.
Mathematics
1 answer:
Murljashka [212]3 years ago
4 0

Answer: Step 3 was Gabi's mistake

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One of the interior angles of a triangle is equal to 30°, and one of the exterior angles is equal to 40°. Find the remaining int
irina1246 [14]

Answer:

The remaining interior angles of this triangle are 140º and 10º

Step-by-step explanation:

The sum of the interior angles of a triangle is always 180º.

A triangle has 3 angles. In this problem, we have one of them, that i am going to call A1 = 30º.

The sum of a interior angle with it's respective exterior angle is also always 180º.

We have that one of the exterior angles is equal to 40°. So it's respective interior angle is

40º + A2 = 180º

A2 = 180º - 40º

A2 = 140º

Now we have two interior angles, and we know that the sum of the 3 interior angles is 180º. So:

A1 + A2 + A3 = 180º

A3 = 180º - A1 - A2

A3 = 180º - 30º - 140º

A3 = 180º - 170º

A3 = 10º

7 0
2 years ago
Maureen walked 3 miles how many feet did she walk
Ostrovityanka [42]

Answer:

15,840 feet.

Step-by-step explanation:

We have been given that Maureen walked 3 miles. We are asked to convert the distance walked by Maureen in feet.

Since we know that 1 mile equals 5,280 feet, so to convert our given distance we will multiply 3 by 5,280.

\text{Number of feet Maureen walked}=\text{3 miles}\times \frac{5,280\text{ feet}}{\text{Mile}}

\text{Number of feet Maureen walked}=3\times 5,280\text{ feet}

\text{Number of feet Maureen walked}=15,840\text{ feet}

Therefore, Maureen walked 15,840 feet.

7 0
3 years ago
Tan y+cot y= sec y x csc y<br> prove the identity <br> (y is the variable)
adell [148]

Answer:

Step-by-step explanation:

tany+coty =

\frac{siny}{cosy} + \frac{cosy}{siny}·

\frac{sin^{2}y + cos^{2}y  }{cosysiny}

\frac{1}{cosysiny}

(secy) (cscy)

3 0
2 years ago
A pair of congruent angles are described as follows: The degree measure of one angle is three more than twice a number, and the
Fiesta28 [93]

Answer:

The measure of the angles in degree is 57.5 degrees

Step-by-step explanation:

If two angles are congruent, they are equal in value

Let the number be x

2x + 3 = 3x-54.5

Thus;

3x-2x = 54.5 + 3

x = 57.5

6 0
3 years ago
If an item that originally cost $13 is increased to $19, what is the percentage of increase in the item?
Evgesh-ka [11]
Original cost (OC) = $13

New cost (NC) = $19

Percentage increase = \frac{NC - OC}{OC} *100 =  \frac{19 - 13}{13} * 100 =  \frac{6}{13} * 100

= 46.15 %
4 0
3 years ago
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