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kari74 [83]
4 years ago
7

Solve the system of equations. y = x2 - 2 y = -2x + 1

Mathematics
1 answer:
bogdanovich [222]4 years ago
8 0

Answer:

x = -3 and y = 7 or x = 1 and y = -1

Step-by-step explanation:

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Which of the following equations have no solutions?
Andre45 [30]

Answer:

A

Step-by-step explanation:

If the variable quantities are the same, but the constants are different, then that equation has no solutions.

4 0
3 years ago
Desi is looking at his calculator, which is shaped like a rectangular prism, and estimates it is about 3 in. wide, 4 in. tall, a
madreJ [45]
We know that 1 ft = 12 in.
The dimensions of the trunk of a car:
4 ft = 48 in wide, 3 ft = 36 in deep,  2 ft = 24 in tall.
V = 48 * 36 * 24 = 41,472 in³
41,472 in³ ≈ 4 * 10^4 in³
And the volume of the calculator:
V ( calc. ) = 3 * 4 * 12 = 144 in³
Answer:
Desi`s error is D ) The volume of the calculator is not about 60 in³.
3 0
4 years ago
Read 2 more answers
Which expressions are equivalent to the equation
Ivahew [28]

Answer:

The correct answer is option 3

2⁻¹⁰ and 1/1024

Step-by-step explanation:

Points to remember

1). ( xᵃ)ᵇ = xᵇ

2).  x⁻ᵃ = 1/xᵃ

It is given that, (2⁵)⁻²

<u>To find the equivalent of (2⁵)⁻²</u>

(2⁵)⁻² =  2⁻¹⁰

<u>To find the value of 2⁻¹⁰</u>

2⁻¹⁰ = 1/2¹⁰

2¹⁰ = 1024

1/2¹⁰ = 1/1024

Therefore the correct answer is 3rd option

2⁻¹⁰ and 1/1024

5 0
3 years ago
Read 2 more answers
A paperweight in the shape of a hemisphere is shown. It has a volume of 231.6 cubic centimeters.
kolezko [41]

Answer:

2/3*22/7*r^3=231.6

2/3*22/7=2.0952

2.0952*r^3=231.6

r^3=231.6/2.0952

r^3=

Step-by-step explanation:

2/3*22/7*r^3=231.6

2.0952r^3=231.6

r^3=110.5384

cuberoot 110.5384

=4.7992

8 0
3 years ago
Please answer correctly !!!! Will mark Brianliest !!!!!!!!!!!!!!
nevsk [136]

Answer:

For every 7 books Ethan read, Sadie read 3 books.

Step-by-step explanation:

For every 21 books Ethan read, Sadie read 9 books.

Unsimplified Ratio = 21:9

21 and 9 have a common factor of 3.

Because 21 and 9 share a common factor we can simplify the ratio

21 / 3 = 7

9 / 3 = 3

The new ratio is 7 to 3

So for every 7 books Ethan read, Sadie read 3 books.

8 0
3 years ago
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