Can someone please help me

Mathematics

1 answer:

grin007 [14]3 years ago

3 0

X = -1 or x =5/3 is the correct answer

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Yolanda has $38 in a bank account. she wants to make two equal deposit so that her account will have a balance of $100. how much

Tems11 [23]

$38 in Yolanda's bank account.
She makes two equal deposits so her account has a balance of $100.

If Yolanda makes two equal deposits so her account has a balance of $100, she would have made a deposit of $31 each.

38+31+31=100

4 0

3 years ago

Read 2 more answers

For what values of m does the graph of y = mx2 – 5x – 2 have no x-intercepts?

Naya [18.7K]

Take a look at y = mx^2 – 5x – 2. This is a quadratic equation with a=m, b= -5 and c= -2. What is the discriminant, b^2 - 4ac? (-5)^2 - 4(m)(-2).

There will be 2 complex roots if this discrim. is < 0. Thus, solve

25 + 8m < 0:

Subtr. 25 from both sides: 8m < -25
Div. both sides by 8: m < -25/8

Conclusion: If m is less than -25/8, there will be no real roots (and thus, no x-intercepts).

8 0

3 years ago

HELP!! Create a system of equations with the solution (-4, 1)

Delvig [45]

9514 1404 393

Answer:

x -y = -5

3x +y = -11

Step-by-step explanation:

We assume you want two linear equations. Since you know a point on each line, the only thing you need to choose is the slope of the two lines through that point. We can make the slopes be +1 and -3, for example. Then the point-slope equations are ...

y -k = m(x -h) . . . . . . line with slope m through point (h, k)

y -1 = +1(x +4)

y -1 = -3(x +4)

We can use these equations "as is", or put them in whatever form you like. I personally prefer "standard form:" ax+by=c.

First equation:

y -1 = x +4 . . . . . . eliminate parentheses

-5 = x -y . . . . . . . keep positive x term, put x and y together, separate from the constant

x - y = -5 . . . . . . standard form

Second equation:

y -1 = -3x -12 . . . . eliminate parentheses

3x +y = -11 . . . . . . add 3x+1 to both sides

A system of equations with solution (-4, 1) is ...