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Mamont248 [21]
2 years ago
5

John buys a computer on sale for $450.00. He

Mathematics
2 answers:
a_sh-v [17]2 years ago
7 0
First you can add 50 dollars to 450 dollars which is 500 then divide that 500 by 2 and that is 250
uysha [10]2 years ago
6 0

Answer:

$450+$50= X

X=$500

Step-by-step explanation:

The sale price is $450.00, so you take that amount and $50.00 which the amount he paid less and add them both. We do this because we want to see the original price of the computer. If it mentioned the original price already and the amount $50.00 and asked the sail price instead, we would have to subtract to get the answer.

Here we have to add.

450+50=500

(add the dollar sign)

$450+$50=X

X=$500

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(1/2y-50)(3/5y+10) what is the answer?
GenaCL600 [577]

The answer is 3/10y^2 - 25y - 500. Glade I could help!

3 0
4 years ago
On a bicycle trail, the city is painting arrows like the one shown below: Upper pointing arrow with height of 11 and length of 9
Studentka2010 [4]

The image of the arrow is missing, so i have attached it.

Answer:

A_t = 69.5 cm²

Step-by-step explanation:

In a second image attached, I have divided the arrow into triangle and rectangle.

From the second image,

A1 is area of triangle while A2 is area of rectangle

Area of triangle is; A1 = ½bh

Our triangle base is given as 9 cm.

To get the height, we will subtract the rectangle height of 8 cm from the total arrow height.

Thus; height of triangle; h = 11 - 8 = 3cm

Thus;

A1 = ½ × 9 × 3

A1 = 13.5 cm²

Formula for area of rectangle is;

A2 = length × breadth

A2 = 8 × 7

A2 = 56 cm²

Thus, total area of arrow is;

A_t = A1 + A2 = 13.5 + 56

A_t = 69.5 cm²

8 0
3 years ago
An artist wants to frame a square painting with an area of 400 square inches if x is the length of the one side of the painting
tatuchka [14]

There is only one solution to the equation.  A quadratic equation has 2 solutions a positive and a negative, but since we are looking for length, the answer can only be postive.  Area= side^2

              400= x^2

         sqrt(400)=x

          20 inches = x  

The length of one side is 20 inches


check: 20*20 = 400, which is the area of the square painting.

8 0
3 years ago
Write 2.452 x 10<br> in standard notation.
-Dominant- [34]

Answer:

24.52

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
In triangle ABC, angle A = 2x°, angle B = (x-45)° and angle C = (x-15)°.
Lelechka [254]
Sum\ of\ angles\ in\ triangle\ is\ equal\ to\ 180^{\circ}\\\\&#10;To\ find\ x\ sum\ all\ angles:\\&#10;2x+x-45+x-15=180\\\\&#10;4x-60=180\ \ \ |Add\ 60\\\\&#10;4x=60+180\\\\&#10;4x=240\ \ \ |Divided\ by\ 4\\\\&#10;x=60^{\circ}\\\\&#10;\angle \  A=2x=2*60=120^{\circ}\\&#10;\angle\ B=x-45=60-45=15^{\circ}\\&#10;\angle\ C=x-15=60-15=45^{\circ}\\\\Triangle\ is\ \textbf{obtuse}.
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3 years ago
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