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natali 33 [55]
3 years ago
6

Can someone help me :(

Mathematics
1 answer:
Ivan3 years ago
7 0
The triangles are similar by AAA so make ratios and solve
\frac{21}{14}  =  \frac{x}{20} \\ x =  \frac{21 \times 20}{14}  \\ x = 30
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What is 78% of 30?
RSB [31]

Answer:

78% of 30 is 23.4

5 0
3 years ago
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Given the equation y − 3 = one half(x + 6) in point-slope form, identify the equation of the same line in standard form.
Schach [20]

Answer:

A. x-2y=-12

Step-by-step explanation:

We have been given an equation of a line in point-slope form. We are asked to write our given equation in standard form.

y-3=\frac{1}{2}(x+6)

Since we know that standard form of equation is: ax+by=c, where, a, b and c are constants.

Let us multiply both sides of our given equation by 2.

(y-3)*2=2*\frac{1}{2}(x+6)

2y-6=x+6

Let us add 6 to both sides of our equation.

2y-6+6=x+6+6

2y=x+12

Let us subtract x from both sides of our equation.

2y-x=x-x+12

2y-x=12

Multiply both sides of our equation by -1.

-2y+x=-12

Rearranging our equation we will get,

x-2y=-12

Therefore, the standard form of our given equation is x-2y=-12 and option A is the correct choice.

4 0
3 years ago
Find the difference: 48.23 – 9.675
STALIN [3.7K]

Answer: 38.555

Step-by-step explanation:

4 0
3 years ago
Ms. Wilson surveyed her class of 36 students about their favorite ice cream flavors.
ruslelena [56]

Answer:

1 student.

Step-by-step explanation:

Two thirds of the students preferred chocolate ice cream:

2/3 of 36 is 24 students.

One fourth of the students preferred strawberry ice cream:

1/4 of 36 is 9.

9+24= 35

<em>--------------------------------------------------------------------------------------</em>

36-35=1

Only one student preferred vanilla ice-cream.

7 0
2 years ago
Read 2 more answers
Another one pls help!!
Mumz [18]

Answer:

21/41

Step-by-step explanation:

Find the total number of students

6+7+2+3+6+8+4+5=41

Then find the students that do not study chemistry

6+7+2+5 = 20

P( not study chemistry) = do not study chem)/total

                                       =21/41

5 0
3 years ago
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