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3 years ago

4(1 - 4r) + 5(r - 7)

Mathematics

2 answers:

Makovka662 [10]3 years ago

5 0

Answer:4\left(1-4r\right)+5\left(r-7\right)=-11r-31

Step-by-step explanation:

omeli [17]3 years ago

5 0

Answer -11r - 31

First you have to multiply the 4 to the numbers on parenthesis and also the 5 to the numbers of parenthesis.

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It's geometry please help.

oksano4ka [1.4K]

Answer:

BC = 22

Step-by-step explanation:

BD = 67

Bc = 3x - 2

CD = 4x + 13

BC + CD = BD (Given)

3x - 2 + 4x + 13 = 67

3x + 4x -2 + 13 = 67

7x + 11 = 67

7x = 67 - 11

7x = 56

x = 56 ÷ 7

x = 8

now instead of x put 8

Bc = 3x - 2

BC = 3(8) -2

BC = 24 -2

BC = 22

4 0

3 years ago

Irreducible fraction of 5600 out of 504 000

Aloiza [94]

Answer:

$\frac{1}{90 }$

7 0

3 years ago

Instructions: Find the missing side of the triangle.<br> 48<br> 50

Lynna [10]

Answer:

x = 14

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

48 ^2 + x^2 = 50^2

2304+x^2=2500

x^2 = 2500-2304

x^2 =196

Taking the square root of each side

sqrt(x^2) = sqrt(196)

x = 14

4 0

2 years ago

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Factor the common factor out of 8x^3+12x

Agata [3.3K]

The answer is, 4x(2x^2+3)

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3 years ago

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Which complex number is a distance of sqrt17 from the origin on the complex plane?

lions [1.4K]

Let z=x+iy be a complex number. The distance from this complex number to the origin is

$\sqrt{(x-0)^2+(y-0)^2}=\sqrt{x^2+y^2}.$

Consider all options:

A. z=2+15i, then $\sqrt{2^2+15^2}=\sqrt{229}.$

B. z=17+i, then $\sqrt{17^2+1^2}=\sqrt{290}.$

C. z=20-3i, then $\sqrt{20^2+(-3)^2}=\sqrt{409}.$

D. z=4-i, then $\sqrt{4^2+(-1)^2}=\sqrt{17}.$

Answer: correct choice is D.

4 0

3 years ago