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exis [7]
2 years ago
15

Which of the following have exactly one solution? Choose all that apply

Mathematics
1 answer:
Oksi-84 [34.3K]2 years ago
3 0
The answer is b: 2x-31=-2x-31
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A toy company wants to sell 1600 toy airplanes this year. so far they have sold 600. what percent of the sales goal have they re
Taya2010 [7]
 the answer is about 37.5%
7 0
4 years ago
A system of equations is shown below.
prisoha [69]

Given:

The system of equations is

y=1.5x-3

y=1.5x+4

To find:

The true statement about the given system of equations.

Solution:

The slope intercept form of a line is

y=mx+b

Where, m is the slope and b is the y-intercept.

We have,

y=1.5x-3

y=1.5x+4

On comparing these two lines with slope intercept form, we get

m_1=1.5,b_1=-3

m_2=1.5,b_2=4

Since the slopes of the lines are equal but the y-intercepts are different, therefore, the two lines are parallel and the system has no solution.

Therefore, the correct option is A.

5 0
3 years ago
What is the value of x in the equation 8x-2y=48, when y=4
Oksanka [162]
8x - 2y = 48,  y =4

8x - 2(4) = 48
8x - 8 = 48
8x = 48+8
8x  = 56
x = 56/8 = 7

x = 7
8 0
3 years ago
Read 2 more answers
PLEASE HELP =(
Elena-2011 [213]

Let X = pounds of Bermuda grass needed.

(20 pounds bahia grass x $6.30) + ( X x $3.65) = (20 +X) x $4.90

Simplify:

126 + 3.65X = 98 + 4.90X

Subtract 3.65X from each side:

126 = 98 + 1.25X

Subtract 98 from each side:

28 = 1.25X

Divide both sides by 1.25

X = 28 / 1.25

X = 22.4 pounds required.


4 0
3 years ago
Evaluate the limit. lim x ? 5 (x-5)^2/x-5
slega [8]
As x approaches 5
hmm, we can divide the (x-5) from top and bottom to get x-5
if we input 5 for x we get
5-5=0
it approaches 0 as x approaches 5
7 0
3 years ago
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