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irina [24]
3 years ago
8

Please help please please help

Mathematics
2 answers:
Anton [14]3 years ago
5 0

Answer:

WHAT THE OTHER GUY SAID!!!

Step-by-step explanation:

Inessa05 [86]3 years ago
3 0

2x + 2 = 3x - 52

-2x         -2x

2 = 1x - 52

+52     +52

54 = 1x

----   ----

1        1

54 = x

Check:

2(54) + 2 = 3(54) - 52

108 + 2 = 162 - 52

110 = 110

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FACTOR....<br>x^2 + 10× - 2400 = 0​
Vikki [24]

Answer:

x= -5 + 5\sqrt{97}, x= -5 - 5\sqrt{97}

Step-by-step explanation:

Since this quadratic is set to zero, we can use the quadratic formula to solve this.

x^2 + 10x - 2400 = 0​

Quadractic formula =  x= -b +- \sqrt{b^2 - 4ac} /2a

For this equation:

a= 1, b=10, c=-2400

Plug these numbers into the equation and solve.

x= -10 +- \sqrt{10^2 - 4(1)(-2400})/2(1)

x= -10 +- \sqrt{100 + 9,600}/2

x= -10 +- \sqrt{9,700}/2

x= -10 +- \sqrt{2^2 * 5^2 * 97}/2

x= -10 +- 5 * 2\sqrt{97}/2

x= -10 +- 10\sqrt{97} / 2

Divide by 2.

x= -5 +- 5\sqrt{97}

Answer:

x= -5 + 5\sqrt{97} or x= -5 - 5\sqrt{97}

5 0
3 years ago
What is the surface area of the prism in square inches?
astra-53 [7]

Answer:

4 inches deep, 5 inches high and 15 inches across

8 0
3 years ago
Read 2 more answers
5x² + 3y when x =-2 and y = 10​
Vera_Pavlovna [14]

Answer:

50

Step-by-step explanation:

When a number is next to a variable, such as 5x, this means you will multiply them(five times x). With x being -2, we will multiply -2 x -2 = 4. the exponent tells you how many times to multiply a number by itself. If the exponent was 5, we would multiply 2 by itself 5 times to get 10. Since we got 4 for our answer, we will multiply that by since it was an exponent and we multiply it. 4 x 5 = 20. Since we know that we multiply numbers next to variables, we will multiply 3y or 3(10). 3 x 10 = 30. Add this to 20 to get your answer. 20 + 30 = 50.

Hope this helps :)

6 0
3 years ago
Please help me with both problems thank you so much!!
motikmotik
The one on the left is -5/6
The one on the right is 1/21
6 0
2 years ago
Read 2 more answers
X/x+2 = 4/5. Solve for x.
gregori [183]
<span>X/x+2 = 4/5

5x = 4x + 8

5x - 4x = 8

x= 8


</span>
4 0
3 years ago
Read 2 more answers
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