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Sophie [7]
3 years ago
15

25 percent of £18 What is the answer

Mathematics
2 answers:
dlinn [17]3 years ago
8 0

Answer:

4.5 or 4 1/2

Step-by-step explanation:

siniylev [52]3 years ago
7 0
£4.50
If u need the step by step answer
18➗2 then 9➗2
You might be interested in
Solve the quadratic equation for x. What is one of the roots? (x + 6)^2 = 49
stich3 [128]

Answer:

x equals -1 and it also equals -13. They are both considered the roots.

Step-by-step

  1. (x+6)^2= 49    to get rid of the exponent square root each side of the equation.
  2. (x+6)= √49     Find square root of 49.
  3. (x+6)= ±7        It could be positive 7 or -7 because both of them squared equal 49. Now solve for each possible equation, (x+6)= 7 and  (x+6)=-7.
  4. (x+6)=7  subtract 6 from each side.
  5. x= 1
  6. (x+6)=-7  Subtract 6 from each side.
  7. x=-13
  8. So the answers are -13 and 1.

3 0
4 years ago
Read 2 more answers
The sum of four consecutive intergers is 8 What are the intergers
Semmy [17]
Consecutive integers are 1 apart
so the 4 are
x, x+1,x+2,x+3

they add to 8

x+x+1+x+2+x+3=8
4x+6=8
minus 6 both sides
4x=2
divide both sides by 4
x=1/2
false, 1/2 is not an integer

if it was adding to 18, then the integers would be 3,4,5,6
but we can't find consecutive integers that add to 8
5 0
3 years ago
Read 2 more answers
Anan is researching hummingbirds, one of the smallest birds. He measures Hummingbird A 2 3/4 tall while hummingbird B measures 2
kolezko [41]

Answer:

3.5/10 taller

Step-by-step explanation:

3/4 is 0.75 and 4/10 is 0.40

0.75-0.40=0.35

0.35 can also be written as 3.5/10 or 35/100

3 0
3 years ago
Write the standard form of the equation of the circle with endpoints of a diameter at the points (7,2) and (-9,5).
lys-0071 [83]

Answer:

(x+1)^2 + (y- 3.5)^2 =64

Step-by-step explanation:

We are given that  endpoints of a diameter at the points (7,2) and (-9,5).

Center of the circle is the mid point of diameter

So, first find the mid point of diameter

Formula : x=\frac{x_1+x_2}{2} , y=\frac{y_1+y_2}{2}

(x_1,y_1)=(7,2)\\(y_1,y_2)=(-9,5)

Substitute the values in formula

x=\frac{7-9}{2} , y=\frac{2+5}{2}

x=-1 , y=3.5

So, center of circle = (h,k )=(-1,3.5)

To find length of diameter :

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

(x_1,y_1)=(7,2)\\(y_1,y_2)=(-9,5)

d=\sqrt{(-9-7)^2+(5-2)^2}

d=\sqrt{265}

Length of radius = r = \frac{Diameter}{2}=\frac{\sqrt{256}}{2}

Standard form of the equation of the circle : (x -h)^2 + (y- k)^2 = r^2

(h,k )=(-1,3.5)

r=\frac{\sqrt{256}}{2}

Equation of the circle : (x+1)^2 + (y- 3.5)^2 =(\frac{\sqrt{256}}{2})^2

Equation of the circle : (x+1)^2 + (y- 3.5)^2 =64

Hence  the standard form of the equation of the circle with endpoints of a diameter at the points (7,2) and (-9,5) is  (x+1)^2 + (y- 3.5)^2 =64

5 0
3 years ago
Evaluate the expression without using a calculator. Sin 30 Cos 60+ Sin 60 Cos30
Lady_Fox [76]
=sin30cos60 + sin60cos30
=(1/2)(1/2) + (√3/2)(√3/2)
=1/4 + 3/4
=1+3/4
=4/4
=1
5 0
3 years ago
Read 2 more answers
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