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Mars2501 [29]
3 years ago
13

I need BIG help with these questions.

Mathematics
1 answer:
scZoUnD [109]3 years ago
6 0

Answer:900

Step-by-step explanation:

2100/1 X 3/7 = 2100X3/7 = 6300/7 = 900

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Use the quadratic formula to solve 5x^2+2x-3
Lisa [10]
Assuming it equals 0
for
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^2-4ac} }{2a}

given
5x^2+2x-3=0
a=5
b=2
c=-3

x=\frac{-2+/- \sqrt{2^2-4(5)(-3)} }{2(5)}
x=\frac{-2+/- \sqrt{4+60} }{10}
x=\frac{-2+/- \sqrt{64} }{10}
x=\frac{-2+/- 8 }{10}
x=(-2+8)/10 or (-2-8)/10
x=6/10 or -10/10
x=3/5 or -1
6 0
3 years ago
Determine whether the given ordered pair is a solution to the system of equations.
Zina [86]
Answer: No

Solution:

Substitute the values of x & y into the first equation
6 -(-1) = 3
6 + 5 is NOT equal to 3
Therefore we can say this is not true
For this to be true, when substituting the values of x & y, the equation must be true for BOTH equations. Since it’s not true for the first equation it doesn’t matter if it’s true or not for the other equation.

I hope this helps!
6 0
4 years ago
The sum of three consecutive even integers is −246. Find the three integers.
Karolina [17]

Answer:

-83, -82, and -81

Step-by-step explanation:

Step 1: Declare your variable

Let x represent the largest of the 3 consecutive integer

Integer 1: x

Integer 2: x + 1

Integer 3: x + 2

Step 2: Create an equation

(x) + (x + 1) + (x + 2) = -246

Step 3: Solve

x + x + 1 + x + 2 = -246

3x + 3 = -246

3x = -249

\frac{3x}{3}=\frac{-249}{3}

x = -83

FInd the other 2 numbers

Integer 1: -83

Integer 2: -82

Integer 3: -81

Step 4: Therefore Statement

Therefore the 3 consecutive numbers are -83, -82, and -81

3 0
3 years ago
Which of the following explains why f(x) = log4x<br> does not have a y-intercept?
Margarita [4]

Answer: f(x) approaches infinity

Step-by-step explanation:

N/A

7 0
3 years ago
When x = 3, is 3x squared 36 or 12?
lubasha [3.4K]
3x^2=3\cdot3^2=3\cdot9=27
4 0
3 years ago
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