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Studentka2010 [4]
3 years ago
7

CAN YALL PLS HELP WITH THIS QUESTION FAST ITS ON A QUIZ AND I WOULD REALLY APPRECIATE IT!!

Mathematics
1 answer:
yaroslaw [1]3 years ago
8 0

Answer:

C:11/12

Step-by-step explanation:

1 2/-3/4

5/3-3/4

20/12-9/12

11/12

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In the city of Springfield. 75% of
Vlad1618 [11]

Answer: 20 parks

Step-by-step explanation:

Let the total number of parks be y.

Then 75% of y = 15 , that is

\frac{75}{100} x y = 15

75y = 15 x 100

75y = 1500

divide through by 75

y = 1500/15

y = 20

Therefore Springfield have 20 parks altogether

7 0
3 years ago
What are the solutions to the system of equations?<br> y = 2x² + 6x - 10<br> \ y =<br> y = -x + 5
Akimi4 [234]

Answer:

x= 1.5, y= 3.5

or x= -5, y= 10

Step-by-step explanation:

Let's solve by substitution.

Label the two equations:

y= 2x² +6x -10 -----(1)

y= -x +5 -----(2)

Substitute (2) into (1):

2x² +6x -10= -x +5

2x² +6x +x -10 -5= 0

Simplify:

2x² +7x -15= 0

Factorise:

(2x -3)(x +5)= 0

2x -3= 0 or x +5= 0

2x= 3 or x= -5

x= 1.5

Now that we have found the value of x, we can find the value of y through substitution.

Substitute into (2):

y= -1.5 +5 or y= -(-5) +5

y= 3.5 or y= 10

Supplementary:

Do check out the following should you wish to learn more about solving quadratic equations!

  • brainly.com/question/12187987

3 0
2 years ago
The graph shows a line and two similar triangles.
docker41 [41]

Answer:

y=1/3x+2

Step-by-step explanation:

7 0
3 years ago
Find an equation of the largest sphere with center (8, 2, 9) that is contained in the first octant.
Furkat [3]
The point (8,2,9) is in the first octant.
The closest distance from the coordinate planes is the value y=2, which will therefore be the maximum radius of the required sphere.

The standard equation of a sphere with radius r and centre (u,v,w) is given by
(x-u)^2+(y-v)^2+(z-w)^2=r^2

Substituting r=2, u=8, v=2, w=9, we get the equation of the required sphere
(x-8)^2+(y-2)^2+(w-9)^2=2^2
8 0
3 years ago
After allowing 20% discount on a marked price 13% VAT was levied on an article. If it was sold for 7232 dollars, what was the ma
katen-ka-za [31]

<u>The marked price of the article was $7865</u>

​Answer:

solution given:

let marked price be x=?

discount =20%

vat=13%

selling price =$7232

we have

<u>discount amount=discount % of marked price</u>=20/100*x=0.2 x

and

<u>vat amount = vat% of selling price</u>=13/100*$7232=$940.16

we have

<u>Selling price with tax  =marked price - discount amount + vat amount</u>

$7232=x-0.2x+$940.16

$7232-$940.16=x-0.2x

0.8x=$6291.84

x=$6291.84/0.8

x=<u>$7864.8</u>

5 0
2 years ago
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