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TEA [102]
2 years ago
13

for simultaneous equations in variables x and y d x² = 49 Dy= -63, D= 7 then what is the value of x?​

Mathematics
1 answer:
Ket [755]2 years ago
3 0

Step-by-step explanation:

hope it will be helpful to you

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Gina is having a party and wants to spend less than $380. She has already spent $300. The only item left on her list is pizzas,
Lisa [10]

Answer:

70 Pizzas

Step-by-step explanation:

10 x 7 = 70

and if you add 300 + 70= 370

so she didnt go over her budget

7 0
3 years ago
Helpp!!! This is due Sunday. I don’t understand!
Darya [45]

Answer:

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6 0
4 years ago
Answwer this please for 20 points and brainiest
Orlov [11]
264/2200 = 0.12

0.12*100 = 12%
6 0
2 years ago
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An open box is made from a square piece of cardboard 30 inches on a side by cutting identical squares and turning up the sides.
pychu [463]

Step-by-step explanation:

A)

The length of the box is 30 − 2x inches.

The width of the box is 30 − 2x inches.

The height of the box is x inches.

So the volume is:

V = x (30 − 2x)²

B)

V(3) = 3 (30 − 6)² = 1728

V(4) = 4 (30 − 8)² = 1936

V(5) = 5 (30 − 10)² = 2000

V(6) = 6 (30 − 12)² = 1944

V(7) = 7 (30 − 14)² = 1792

As x increases, the volume of the box increases to a maximum and then decreases.

C)

The ends of the domain occur when V = 0.

0 = x (30 − 2x)²

x = 0 or 15

So the domain is (0, 15).

3 0
3 years ago
What is 54/100 ins simplest form and 72/100, 90/100?
Alenkinab [10]
Do you still want it as a fraction or a decimal?
 If you want it as a fraction:
54/100= 27/50
72/100=36/50=18/25
90/100=45/50
In decimals:
54/100=0.54
72/100=0.72
90/100=0.90

5 0
4 years ago
Read 2 more answers
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