2 years ago

Solve the system of equations. 10x + y= − 20 y = 2 x^2 − 4x − 16

Mathematics

1 answer:

Alenkasestr [34]2 years ago

5 0

A graphing calculator shows two solutions:
(x, y) = (-2, 0) or (-1, -10)

You might be interested in

A steep mountain is inclined 75 degree to the horizontal and rises 3900 ft above the surrounding plain. A cable car is to be ins

maria [59]

Answer: $4004.76\ ft$

Step-by-step explanation:

Given

inclination is $\theta=75^{\circ}$

Mountain is $h=3900\ ft$ high

Cable is tied $x=910\ ft$ from the base of the mountain

From the figure, length of the shortest path is $l$

It is given by using Pythagoras theorem

$\Rightarrow l^2=3900^2+910^2\\\Rightarrow l=\sqrt{(3900)^2+(910)^2}\\\Rightarrow l=4004.76\ ft$

7 0

2 years ago

5. Monday night it was -2.3°C. If the

ozzi

Answer:

-4.6

Step-by-step explanation:

-2.3-2.3=-4.6

8 0

2 years ago

14 times 4 times 18 times 6 times 5 Caleb draws $14 on each of 4 posters he draws 18 cats on each of six other posters if he dra

Rama09 [41]

Just add it all up with a calculator

4 0

3 years ago

Read 2 more answers

If y is 20, what is x?

vesna_86 [32]

When y=20 , x is −5.

8 0

3 years ago

Read 2 more answers

Suppose that a sample of size 100 is to be drawn from a population with standard deviation L0. a. What is the probability that t

NARA [144]

Answer:

The probability that the sample mean will lie within 2 values of μ is 0.9544.

Step-by-step explanation:

Here

the sample size is given as 100
the standard deviation is 10

The probability that the sample mean lies with 2 of the value of μ is given as

$P(| \bar{X}-\mu|$

Here converting the values in z form gives

$P(-2$

Substituting values

$P(-2$

From z table

$P(z\leq 2)=0.9772\\P(z\leq -2)=0.0228\\P(-2\leq z\leq 2)=P(z\leq 2)-P(z\leq -2)\\P(-2\leq z\leq 2)=0.9772-0.0228\\P(-2\leq z\leq 2)=0.9544\\$

So the probability that the sample mean will lie within 2 values of μ is 0.9544.

5 0

3 years ago