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3 years ago

X2 - 8x + 14 = 2x - 7

Mathematics

1 answer:

Marrrta [24]3 years ago

6 0

Answer:

x=7,3

Step-by-step explanation:

x^2-8x+14=2x-7

Add 8x to both sides.

x^2+14=10x-7

Add 7 to both sides.

x^2+21=10x

x^2+7*3=10x

(x*7)+(x*3)=10x

x=7,3

Hope this helps plz hit the crown :D

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A shoebox is 14 inches long and 9 1/2 inches wide. Its volume is 665 cubic inches. Which equation can you use to find how tall t

Vilka [71]

Lets see

Volume=Length ×Breadth ×Height

B=9 1/2=9.5in

L=14in

Now

665=14(9.5)H
665=133H
H=5in

7 0

2 years ago

two ships leave a port at the same time. the first ship sails on a bearing of 55° at 12 knots (natural miles per hour) and the s

Korvikt [17]

Answer:

37.59 nautical miles

Explanation:

Distance = Speed x Time

The speed of the first ship = 12 knots

Thus, the distance covered after 1.5 hours

$\begin{gathered} =12\times1.5 \\ =18\text{ miles} \end{gathered}$

The speed of the second ship = 22 knots

Thus, the distance covered after 1.5 hours

$\begin{gathered} =22\times1.5 \\ =33\text{ miles} \end{gathered}$

The diagram representing the ship's path is drawn and attached below:

The angle at port = 90 degrees.

The triangle is a right triangle.

Using Pythagorean Theorem:

$\begin{gathered} c^2=a^2+b^2 \\ c^2=18^2+33^2 \\ c^2=324+1089 \\ c^2=1413 \\ c=\sqrt[]{1413} \\ c=37.59\text{ miles} \end{gathered}$

The two ships are 37.59 nautical miles apart after 1.5 hours.

8 0

1 year ago

Y + 3x = -1<br> y = 1/2x+ 20

skelet666 [1.2K]

Im not sure if it’s right but I think it’s -6,17

3 0

3 years ago

Read 2 more answers

C. Write an equation of the line that contains the given point and has the given slope. Write the equation in slope intercept fo

Harlamova29_29 [7]

Answer:

Step-by-step explanation:

For the first problem, we can plug in the slope of $-5$ for $m$ :

$y = -5x + b$

To solve for $b$ , we plug in the given point $(-2, 2)$ :

$2 = -5(-2) + b$

$2 = 10 + b$

$b = -8$

This gives us the equation:

$y = -5x -8$

For the second problem, we can plug in the slope of $1$ for $m$ :

$y = x + b$

To solve for $b$ , we plug in the given point $(0, -2)$ :

$-2 = 0 + b$

$b = -2$

This gives us the equation:

$y = x - 2$

3 0

3 years ago

What expression is 8/12 eual to?

mojhsa [17]

Answer:

8/12 = 2/3

Step-by-step explanation:

3 0

3 years ago