2 years ago

A line passes through (2, −1) and (4, 5). Which answer is the equation of the line?

Mathematics

1 answer:

k0ka [10]2 years ago

6 0

Answer: y=3x-7 is the correct answer

Step-by-step explanation:

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What are the diameters of the painting? Easy!!!

zalisa [80]

x = 10.22 in

Solution:

Width of the figure = x in

Length of the figure = (2x + 5) in

Area of the figure = 260 in²

To find the value of x:

Area of the figure = length × width

length × width = 260

(2x + 5) × x = 260

$2x^2+5x=260$

Subtract 260 from both sides of the equation.

$2x^2+5x-260=0$

Factor the above quadratic expression.

Quadratic equation formula:

$$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

$$x=\frac{-5 \pm \sqrt{5^{2}-4 \cdot 2(-260)}}{2 \cdot 2}$

$$x=\frac{-5 \pm \sqrt{2105}}{4}$

$$x=\frac{-5+\sqrt{2105}}{4}, \ x=\frac{-5-\sqrt{2105}}{4}$

x = 10.22, x = –12.72006

Dimension of the figure cannot be measured in negative terms.

Hence x = 10.22 in.

7 0

2 years ago

A trapezoid has an area of 30 in2. If the lengths of the bases are 4.8 in. and 5.2 in., what is the height?

Aleonysh [2.5K]

5.2+4.8= 10
So it has to be 20 I think

3 0

2 years ago

What is the diameter of this disk

ad-work [718]

I believe the diameter would be 12
d=2r

3 0

2 years ago

Read 2 more answers

Please help me solve these questions

PtichkaEL [24]

Answer: D

Step-by-step explanation:

√8=2√2

and i cant see the first problem

4 0

2 years ago

In a large population, 71 % of the people have been vaccinated. If 4 people are randomly selected, what is the probability that

Oksi-84 [34.3K]

Answer:

The answer is "0.9929"

Step-by-step explanation:

$\text{The distribution in binomials is n = 4 and p = 0.71.}\\\\\text{Vaccinated Pr(AT LEAST ONE) = 1-pr( no people vaccinated ).}$

$= 1 - Bin (n=4, k =0, p=0.71) \\\\= 1 - C(4,0) \times 0.71^0 \times (1-0.71)^{4-0} \\\\= 1 - (1 \times 0.29^4)$

$= 1 - (1 \times 0.00707281)\\\\=0.9929$

5 0

2 years ago