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ivann1987 [24]
3 years ago
11

15 is 23% of what number

Mathematics
1 answer:
rosijanka [135]3 years ago
4 0
15 = 0.23x
x = 65.2 

therefore 15 is 23% of 65.2

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The definition of a circle uses the undefined term _______.
Alecsey [184]

Answer:

C. Plane  

Step-by-step explanation:

One definition of a circle is: "It is the set of all points in a plane that are at a given distance from a fixed point."

The undefined term is the word "plane."

You could define a plane as a flat surface with zero thickness and extends infinitely in all directions, but it isn't in the definition of a circle.

Euclid defined a plane as "a surface that lies evenly with the lines on it" before he defined a circle, so the meaning was understood.

A, B, and D are wrong. They aren't mentioned in the definition.

6 0
3 years ago
Please help don't understand at all​
Levart [38]

(i) Note that it is given to you that 3a + 2b = 9

You are trying to find the value of 9a + 6b. Find what is multiplied to both the variable a & b. Divide:

(9a + 6b)/(3a + 2b) = 3

Next, multiply 3 to the 9 on the other side of the equation:

3 x 9 = 27

27 is the value of 9a + 6b.

(ii) Note that it is given to you that 8x + 6y = 60

You are trying to find the value of 4x + 3y. Find what is multiplied to both the variable x & y. Divide:

(8x + 6y)/(4x + 3y) = 2

Next, divide 2 from the 60 on the other side of the equation:

60/2 = 30

30 is the value of 4x + 3y.

~

5 0
3 years ago
Read 2 more answers
Write an equation in slope intercept form for <br> the given slope.<br> (5,9).(6,8)
vovangra [49]

<u>Answer: </u>

The equation in slope intercept form for (5,9) and (6,8) is y = 3x-10

<u>Solution: </u>

Given that (5,9) and (6,8)

Here, x_{1}=5 ; y_{1}=5 ; x_{2}=6 ; y_{2}=8

We know the slope of an equation is given by y = mx+c

To find the value of m, we use the below given formula

\mathrm{m}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

Substituting the values we get,

\mathrm{m}=\frac{8-5}{6-5}

m = \frac{3}{1}

m = 3

Putting the value of m in the slope intercept form we get,

y = 3x+c

To find the value of c, we substitute the value of x and y from any two given point. Let’s take x = 5 and y = 5

5 = 3(5) + c

5 = 15 +c

5-15 = c

c = -10

Therefore the slope intercept equation becomes y = 3x -10

6 0
3 years ago
4. Multiply or divide : i) (a+b) (a-b) ii) (4b +5a) ÷ 2 b​
IgorC [24]

Answer:

1. a²-b²

2.4b² + 5ab/2

Step-by-step explanation:

1:. it's a formula of a²-b² so, it can be solved like this and

2: I'm not sure about 2nd one

4 0
3 years ago
What is the length of Xy when w=1.3units<br><br> Explain why F is correct
Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation

8 0
3 years ago
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