Work out : 3/5 of 7kg please help me

Answers

Answer 1

Answer: $(3)/(5) *7kg = (3*7)/(5) kg= (21)/(5) kg=4 (1)/(5) kg=4.2kg$

Answer 2

Answer: Well OF means to MULTIPLYSo Ur pretty much looking at it like this: 3/5 x 7You have to do 7 times the numerator, (which is 3)7 times 3 is 21.Now we have 21/5So 21/5 is the answer

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A square is inscribed in an equilateral triangle that is inscribed in a circle. A square is inscribed in an equilateral triangle that is inscribed in a circle. The square and circle are shaded.

Which represents the area of the shaded region?

area of the circle – area of the square – area of the triangle
area of the triangle – area of the square + area of the circle
area of the triangle + area of the square + area of the circle
area of the circle – area of the triangle + area of the square

Answers

The area of the shadedregion is (area of the circle) - (area of the square) - (area of the triangle)

Option A is the correct answer

What is a triangle?

A triangle is a 2-D figure with three sides and three angles.

The sum of the angles is 180 degrees.

We can have an obtuse triangle, an acute triangle, or a right triangle.

We have,

The shadedregion consists of the area inside the circle but outside the square, as well as the area inside the equilateral triangle but outside the square.

Now,

The area of the circle is πr²

Since the square is inscribed in the circle, the diameter of the circle is equal to the diagonal of the square.

Let's say the side length of the square is s.

By the Pythagorean theorem,

s² + s² = (diameter)²

2s² = (2r)²

s² = r²

The area of the square is s² = r².

The area of an equilateraltriangle with side length s is √(3)/4 x s².

Since the side length of the square is equal to the height of the equilateral triangle, the side length of the equilateral triangle is also equal to s.

The area of the shadedregion.

= (area of the circle) - (area of the square) - (area of the triangle)

Thus,

The area of the shadedregion is (area of the circle) - (area of the square) - (area of the triangle)

Learn more about triangles here:

brainly.com/question/25950519

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A is square due to ots shape

Roots of a quadratic equation 3x²-x+9=0 are p and q. Value from p/q + q/p = ....?

Answers

Hello,

3x²-x+9=0
==>x²-x/3+3=0
p+q=1/3
pq=3
p/q+q/p=[(p+q)²-2pq]/(pq)=[(1/3)²-2*3]/3=[1/9-6]/3=-53/27

3x²- x + 9 = 0
also x² - (1/3)x + 3 = 0

p,q are roots so
(x - p)(x - q) = x² - (1/3)x + 3 = 0
x² - (p+q)x + pq = x² - (1/3)x + 3 = 0

compare coefficients we have
p+q = 1/3 ... (1)
pq = 3 ... (2)
(1)/(2) ... (p+q)/pq = (1/3)/3
p/q + q/p = 1/9

Which of the following statements is always true?a.
Workers being paid on commission make less money than if they are salaried.
b.
Workers being paid on commission get paid based solely on their performance.
c.
Workers being paid on commission are stressed over the amount of earnings they will have.
d.
Workers being paid on commission increase the accounting costs of the employer.

Answers

Workers being paid on commission get paid based solely on their performance.
They get paid based on their performance and not their hours.

Answer:

its b

Step-by-step explanation:

Hasan deposits $150 in a savings account that earns simple interest at an annual rate of 3%. He makes no other deposits or withdrawals. How much interest does his account earn after five years?

Answers

Answer:

$172.5 hope this helps

Step-by-step explanation:

Solve the equation by completing the square. If necessary, round to the nearest hundredth. x² – 18x = 19
1; 19
–1; 19
3; 6
–3; 1

Answers

Answer:

Option B. x = -1, 19

Step-by-step explanation:

The given equation is x² - 18x = 19

We can get the value of x by factorizing the expression or by quadratic formula.

We will try to factorize the equation first. If we find no factors then we will apply quadratic formula to get the value of x.

x² - 18x - 19 = 0

x² - 19x + x - 19 = 0

x(x - 19) + 1(x - 19) = 0

(x - 19)(x + 1) = 0

x = 19, -1 will be the solutions.

So there is no need to apply quadratic formula.

Option B. x = -1, 19 is the answer.

ax^2+bx=c
REMEMBER THIS

ok
first, make sure that a is 1
done

now take 1/2 of b and square it

-18/2=-9, (-9)^2=81
add that to both sides

x²-18x+81=19+81
x²-18x+81=99
factor perfect square
(x-9)²=100
square root both sides
don't forget positive and negative root
x-9=10
x-9=-10
ad 9 to both sides

x=19
x=-1

answer is -1; 19

2nd choice is answer

1/2x +31/2y=
Please help I have only till 3 pm