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Anna35 [415]
3 years ago
11

7th grade math! Divide 2.875*10^6 by 2.3*10^3 Possible answers in photo linked.

Mathematics
1 answer:
balu736 [363]3 years ago
5 0
The answer is 1.25 x 10^3

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Question 4
astraxan [27]

Answer:

No real roots

Step-by-step explanation:

The given equations are:

3x-1+2y=0

3x^2-y^2+4=0

We make y the subject in the first equation to get

y=\frac{1-3x}{2}

We substitute into the second expression to get:

3x^2-(\frac{1-3x}{2})^2+4=0

We expand to get:

3x^2-\frac{(1-6x+9x^2)}{4}+4=0

Multiply through by 4 to get:

12x^2-1+6x-9x^2+16=0

3x^2+6x+15=0

The discriminant is given by D=b^2-4ac

D=3^2-4*12*15

D=-711

Since the discriminant is less than zero, the two curves never intersects.

Therefore the system has no real roots

6 0
4 years ago
at a local gym you can either pay $90 for a monthly pass then pay for dollars each time you go to the gym or you can pay $13 eac
vovangra [49]

Answer:1st option

Step-by-step explanation:

3 0
3 years ago
What is the surface area of a sphere with a circumference of 30 ft? Round the answer to the nearest tenth. 286.5 ft^2 143.2 ft^2
posledela
The answer is 71.6 ft^2.
It is given that 2πR=30 therefore R=4.77(aprox.)
Now you take the area formula:πR^2 which is equal to 71.6
6 0
3 years ago
Read 2 more answers
What quantities are equivalent to 250 meters
Vsevolod [243]

Hello there,

Okay, well you have asked what quantities are equivalent to 250 meters well 250 meters would be...

  • 25000 centimeters
  • 0.25 kilometers
  • 820.20 feet

Hope I helped,

Amna

6 0
4 years ago
Approximate the number using a calculator 6^2.8
Mama L [17]

<u>Answer</u>

150.9467

<u>Explanation</u>

We can simplify this equation as;

6^2.8 = 6² × 6^0.8

            = 36 × 4.1929

             = 150.9467

8 0
4 years ago
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