Jenny & Natasha are working on a problem together: Solve x / 3 + 8 = −2. Natasha thinks the first step is to multiply by 3. Jenny explains that this is not the most efficient way to solve. Explain who is correct & justify your reasoning.

Answer:

30 students

Step-by-step explanation:

you have a ratio, and an unknown amount, so set up a proportion

[tex]\frac{2}{3} = \frac{x}{18}[/tex] I used x because the amount of boys is unknown

so then, cross multiply

(so do 3 times x, and 2 times 18)

[tex]3x=36[/tex]

then divide both sides by 3 to get x by itself, and you get

[tex]x=12[/tex]

this means there are 12 boys in the class. because the problem is asking for the total number of students, add 12 and 18 (the number of boys and girls).

you get 30, so there are 30 students in her class.

In a square, opposite sides are parallel, all sides are equal, and the angles made by the diagonals are equal, that is 45°.

It is a polygon with four sides. The total interior angle is 360 degrees. A parallelogram's opposite sides are parallel and equal.

In a rectangle, opposite sides are parallel and equal, but the angles made by the diagonals are different.

In a rhombus, opposite sides are parallel and all sides are equal, but the angles made by the diagonals are different.

In a square, opposite sides are parallel, all sides are equal, and the angles made by the diagonals are equal, that is 45°.

More about the parallelogram link is given below.

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Answer: 30

Step-by-step explanation:

24 + f = 54

f = 54 - 24

f = 30

Answer:

f=30

Step-by-step explanation:

You want to get x by itself on one side, so in order to do that, you need to subtract the 24, and if you do it one side, you need to do it to the other side.

That would give you:

24-24+f=54-24

then simplify it to be:

f=30

Answer:

B

Step-by-step explanation:

Option B best displays/showcases the equation of 6x = 4x +18

Answer:

Formula for Calculating Alcohol in Beer

Step-by-step explanation:

Subtract the Original Gravity from the Final Gravity.

Multiply this number by 131.25.

The resulting number is your alcohol percent, or ABV%

Answer:

H is NOT True.

Step-by-step explanation:

5 is not greater than 7.

Answer:

no 3 is the answer

Step-by-step explanation:

iam not sure

Answer:

I know that upfront fees, inactivity fees, and ATM fees are associated with online banking and checking accounts

Step-by-step explanation:

Answer:

433

Step-by-step explanation:

When there are 2 neatives together like that it changes to a positive. So it woud be 329+104=433

Answer:

7 or 8

Step-by-step explanation:

7 when each member does at least one of the three,and 8 when some do neither of the three.

Answer:

they are the same

Step-by-step explanation:

Answer:

They are the same got it right on edg

Step-by-step explanation:

Answer:

No, it is not

Step-by-step explanation:

This is not a statistical question because there is no need to apply any sort of math. This is a question that can easily be answered with a yes or no.

Answer:

Sample Response: No. A statistical question addresses difference in a population and offers a variety of responses. Carter’s question would yield only yes or no responses.

Answer:

there is no relationship between the two angles if E switched with D then id say corresponding but theres not

Answer:

you divide the big number by the little number

Step-by-step explanation:

Answer:

121 minutes

Step-by-step explanation:

First, we divide the time by the miles

22 ÷ 2 = 11

So now that we have the unit rate, 1 mile for every 11 minutes, we can multiply 11 (the unit rate minutes) by 11 (the given miles she wants to reach)

11 x 11 = 121

So, in 121 minutes, Wendy can walk 11 miles.

(the double number line will look something like this, but going all the way until 121:11)

Answer:

The answer is 106 degrees

Step-by-step explanation:

Answer:

Letter B. 36.618

Step-by-step explanation:

6 is the tenth 1 is the hundredth, so look at the next number (8/thousandth) and of its 5 or more raise the score, 4 or less let it rest, 8 is 5 or higher so you then remove the 8 and raise the 1 in hundreths place to a 2

Answer:

1.92 m^2

Step-by-step explanation:

1.6 m x 1.2 m

1.92 m^2

Answer:

25 minutes...

Step-by-step explanation:

This is because if he can complete 12 math problems in 6 minutes when u simplify that u get 2 problems done per minute so that would make 50 problems done in 25 minutes

David take 25 minutes to complete 50 math problems.

It is a method where we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.

Steps to Use Unitary Method

First, let us make a note of the information we have. There are 5 ice-creams. 5 ice-creams cost $125.

Step 1: Let’s find the cost of 1 ice cream. In order to do that, divide the total cost of ice-creams by the total number of ice-creams. The cost of 1 ice-cream = Total cost of ice-creams/Total number of ice-creams = 125/5 = 25. Therefore, the cost of 1 ice cream is $25.

Step 2: To find the cost of 3 ice-creams, multiply the cost of 1 ice cream by the number of ice-creams. The cost of 3 ice-creams is cost of 1 ice-cream × number of ice-creams = 25 × 3 = $75. Finally, we have the cost of 3 ice-creams i.e. $75.

Given:

David completed 12 math problems in 6 minutes.

So, he will solve one math problem in= 6/12 = 1/2 minutes

Now, to complete 50 math problem he needs

=50 x 1/2

=50/2

=25 minutes

Hence, David take 25 minutes to complete 50 math problems.

Learn more about unitary method here:

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Answer:

D:he deposits $10 per week

Step-by-step explanation:

Answer:

Inflation rate for 2019 is 2.5%

Step-by-step explanation:

(124/121) - 1 = 1.02479 - 1 = .02479

Change 0.02479 to percent by multiplying 100 = 2.479%

Round this up to 2.5%

Since the value is increasing from 121 in 2018 to 124 in 2019, this is an inflation.

Answer:

jus 2 ez pz broski lemon squeze

Step-by-step explanation:

Answer:

No.

Step-by-step explanation:

3/4 = 0.75

Answer: non-repeating

Step-by-step explanation:

Answer:

B is correct: (-sqrt15)/8

Step-by-step explanation:

The value of the x is 104.5° then the value of the sin 2x is -0.49. Then the correct option is B.

Trigonometry deals with the relationship between the sides and angles of a right-angle triangle.

If cos(x) = -1/4 and tan(x) < 0

Then the value of the x will be

[tex]\begin{aligned} \cos x &= - \dfrac{1}{4}\\\\x &= \cos^{-1} \dfrac{-1}{4}\\\\x &= 104.5^o \end{aligned}[/tex]

Then the value of the sin 2x will be

[tex]\sin 2x = \sin 2*104.5^o\\\\\sin 2x = \sin 209^o\\\\\sin 2x = -0.4848 \approx 0.49[/tex]

More about the trigonometry link is given below.

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Answer:

Step-by-step explanation:

1) 2^2 + 2^2 = c^2

4 + 4 = c^2

8 = c^2

c = sqrt8

2) 2^2 + 3^2 = c^2

4 + 9 = c^2

13 = c^2

c = sqrt13

3) 10^2 + 4^2 = c^2

100 + 8 = c^2

108 = c^2

c = sqrt108

4) 1^2 + 5^2 = c^2

1 + 25 = c^2

26 = c^2

c = sqrt26

5) 3^2 + 1^2 = c^2

9 + 1 = c^2

10 = c^2

c = sqrt 10

6) 9^2 + 9^2 = c^2

81 + 81 = c^2

162 = c^2

c = sqrt162

Answer: (0,-1/2)

Step-by-step explanation:

Edge :-)

Answer: (0,-1/2)

Step-by-step explanation:

Answer:

633.3

Step-by-step explanation:

Answer:

i believe it is 1/2 yard

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

I hope this helps