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Lady bird [3.3K]
2 years ago
12

What is the Circumference of this circle

Mathematics
1 answer:
Gelneren [198K]2 years ago
6 0

Answer:

81.68 is the correct answer. Hoped this helped.

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Write and equati9n of a l8ne that passes through (1,-2) and is perpendicular to -4x+7y=21
yarga [219]

Given:

A line passes through (1,-2) and is perpendicular to -4x+7y=21.

To find:

The equation of that line.

Solution:

We have, equation of perpendicular line.

-4x+7y=21

Slope of this line is

m_1=-\dfrac{\text{Coefficient of x}}{\text{Coefficient of y}}

m_1=-\dfrac{-4}{7}

m_1=\dfrac{4}{7}

Product of slope of two perpendicular lines is -1.

m_1\times m_2=-1

\dfrac{4}{7}\times m_2=-1

m_2=-\dfrac{7}{4}

Now, slope of required line is -\dfrac{7}{4} and it passes through (1,-2). So, the equation of line is

y-y_1=m(x-x_1)

where, m is slope.

y-(-2)=-\dfrac{7}{4}(x-1)

4(y+2)=-7(x-1)

4y+8=-7x+7

4y+7x=7-8

7x+4y=-1

Therefore, the equation of required line is 7x+4y=-1.

7 0
2 years ago
HELP almost due in 5
skad [1K]

Answer:

A, D,F are triangle sides

4 0
3 years ago
Thank you if you choose to help l
Aneli [31]

Answer:

xyz plz my answer as brainliest

3 0
3 years ago
Read 2 more answers
the formula p = nc - e , gives the profit p when a number of items n are each sold at a cost c and expenses e are subtracted. If
weeeeeb [17]

Answer:

  c = 1.45

Step-by-step explanation:

Solving the equation for c, we find ...

  p +e = nc

  c = (p +e)/n

Filling in the values given, we have ...

  c = (4050 +300)/3000 = 4350/3000 = 1.45

The value of c is 1.45.

5 0
3 years ago
Please help solve these equations! Show steps(: thank you
Bond [772]
Y= x^2-58
X^2-58=0
X^2=58
X= sqrt of 58
X= 7.6

Y= x^2+13
X^2+13=0
X^2=-13
Get sq rt of 13 the negative becomes i
X= 3.6i

6 0
3 years ago
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