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Akimi4 [234]
4 years ago
13

HELP!!

Mathematics
1 answer:
kobusy [5.1K]4 years ago
5 0
<span>f(x)=x^2+2x−24
x intercept is where y=0 let f(x)=y
</span><span>x^2+2x−24=0
(x+6)(x-4)  ,x=-6, x=4

2)

</span><span>f(x)=x^2+17x+72 
</span>x^2+17x+72 =0
<span>
(x+8)(x+9) x= - 8,- 9

3)
</span>f(x)=x^2+6x+11<span>
x=-3 minimum</span>
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The aspect ratio (the ratio of screen width to
stira [4]

Answer:

Width = 36in

Size = 42.02

Step-by-step explanation:

Given

x \to width

y \to height

x : y = 16 : 9

Required

The size of screen of height 20,6in

First, we calculate the width using the following equivalent ratios

16: 9 = x : 20.6

Express as fraction

\frac{16}{ 9} = \frac{x }{ 20.6}

Solve for x

x = 20.6 * \frac{16}{ 9}

x = 36.62

Hence:

Width = 36in --- approximated

So, we have:

x = 36.62

y =20.6

The size (diagonal) is then calculated using:

Size = \sqrt{x^2 + y^2

Size = \sqrt{36.62^2 + 20.6^2

Size = \sqrt{1765.3844

Size = 42.02

Size =42in --- approximated

8 0
3 years ago
A and B are vertical angles. If A = 4x - 10 and B = 6x - 30, find mA.
Andru [333]
<span>vertical angles
m<A = m<B
so
</span>4x - 10 = <span>6x - 30
6x - 4x = -10 + 30
2x = 20
x = 10

m<A = </span><span>4x - 10
</span>m<A = 4(10) - 10
m<A = 40 - 10
m<A = 30<span>

</span>
5 0
3 years ago
Read 2 more answers
What is<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B3%7D%20%20%5Ctimes%20%20-%2011%20%5C%5C%20" id="TexFormula1" ti
Ludmilka [50]
-22/3




................................

..
4 0
4 years ago
Robert traveled 80 miles per hour. What equation shows the relationship between distance traveled (d), speed (s), and time taken
Evgen [1.6K]

Answer:

  • 80 = \frac{d}{t}
  • d=80t
  • t = \frac{d}{80}

Step-by-step explanation:

The relationship between distance traveled (d), speed (s), and time taken (t) can be represented the following expressions:

  • s = \frac{d}{t}
  • d = st
  • t = \frac{d}{s}

Using any of these expressions you can show the relationship. Substitute s = 80 for the speed.

  • 80 = \frac{d}{t}
  • d=80t
  • t = \frac{d}{80}
3 0
4 years ago
Find the sales tax amount. purchase price = $121.65; tax rate = 11%
PolarNik [594]
You know 11% as decimal is 0.11 so you multiply 0.11 and $121.65 which is 13.38 so c is the correct answer rounded to the nearest hundredth
3 0
3 years ago
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