3 years ago

Y= 4x+6 -5x-y=21 what is the answer?

Mathematics

1 answer:

slamgirl [31]3 years ago

5 0

I think the answer is (-8,-26)

You might be interested in

Algebra is not something I'm good at

laila [671]

Hello,

slope=s=(5-8)/(9-3)=-3/6=-1/2

7 0

3 years ago

I really need help with this "Simplify this equation."

Tju [1.3M]

Answer:

2nd one

Step-by-step explanation:

3 0

3 years ago

Based upon extensive data from a national high school educational testing program, the standard deviation of national test scor

rjkz [21]

Answer:

<h2>The standard error of the mean is 7.56</h2>

Step-by-step explanation:

The standard error of the mean is defined as the ratio of standard deviation to the square root of the sample size of a data. The standard error of the mean is mathematically expressed as shown below;

$X = \frac{\sigma}{\sqrt{n} }$

X is the standard error of the mean

$\sigma$ is the standard deviation

n is the sample size.

Given;

$\sigma = 121\\n = 256$

On substitution into the formula we have;

$X = \frac{121}{\sqrt{256} }$

$X = \frac{121}{16} }\\$

X ≈ 7.56

5 0

3 years ago

The angle of elevation of the top of a tower from two points 121 m and 144 m away from the foot of the tower on th same side are

Dennis_Churaev [7]

Answer:

132 m

Step-by-step explanation:

Refer to attachment for figure.

In smaller triangle with angle theta , we have ,

⇒ tanθ = p/b

⇒ tanθ = h/121m

⇒ tanθ = h/121 m

In triangle with angle 90-∅

⇒ tan(90-θ) = p/b

⇒ cot θ = h/144 m

Multiplying these two ,

=> tanθ . cotθ = h/121 m × h/144m

=> 1 = h²/ (121 m × 144m )

=> h² = 121m × 144m

=> h= √ ( 121m × 144m)

=> h = 11m × 12m

=> h = 132 m

6 0

3 years ago

Using synthetic division, find the quotient Q(x) and the remainder R if the polynomial P(x) = x3 − 2x2 − 5x + 6 is divided by (x

VLD [36.1K]

Answer:

Step-by-step explanation:

1_| 1 -2 -5 6

1 -1 -6

1 -1 -6 0

Q(x)= x^2 - x - 6

R: 0

4 0

2 years ago