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2 years ago

WILL GIVE BRAINLIST AS SOON AS I CAN. PLEASE HELP.

Mathematics

2 answers:

kkurt [141]2 years ago

4 0

Answer:

x=1056.25

Step-by-step explanation:

(2x)(2x)(55)=(65)(65)(55) Multiply

4x(55)=232375 Divide 55 from each side

4x=4225 Divide each side by 4

x=1056.25

DedPeter [7]2 years ago

4 0

Answer:

x = 30

Step-by-step explanation:

Since the triangles are similar, that is

ΔABC and ΔDEC

The 3 angles in ΔDEC sum to 180°, thus

∠C + ∠D + ∠E = 180°, that is

55° + 65° + ∠E = 180°

120° + ∠E = 180° ( subtract 120 from both sides )

∠E = 60° and

∠E = ∠B = 2x = 60 ( divide both sides by 2 )

x = 30

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Need help on #30 and 31 thanks!!

Nina [5.8K]

30)

$\bf \begin{array}{llll}
y=&{{ a}}x^2&{{ +b}}x&{{ +c}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}
\\\\\\
discriminant\implies b^2-4ac=
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31)

a simple case for that would just be, using an equation with an imaginary value, let's do so

$\bf \sqrt{-5}=x\implies \sqrt{-1\cdot 5}=x\implies \sqrt{-1}\sqrt{5}=x\implies i\sqrt{5}=x\\\\
-------------------------------\\\\
\textit{so, we'll use that imaginary value then}\\\\
\sqrt{-5}=x\implies -5=x^2\implies 0=x^2+5\implies \boxed{y=x^2+5}$

when you get a "solution" or zero with an "i" or an imaginary value, is just a way to say, there's really no solution, the function never touches the x-axis

3 0

3 years ago

Six Flags Amusement Park has found that 3/5 of its customers ride the Colossus roller coaster. Of these, 1/4 ride it again. What

QveST [7]

Answer:

The answer is B. 3/20

Step-by-step explanation:

That will be 1/4 of 3/5

3/5 × 1/4

3/20

3 0

2 years ago

On a coordinate plane, a line goes through (negative 3, 0) and (0, negative 6).

shusha [124]

Answer:

B. (1,-8)

Step-by-step explanation:

Slope of the first one:

(-6-0)/(0--3) = -6/3 = -2

y = -2x - 6

3y + 30 = 6x

y + 10 = 2x

-2x - 6 + 10 = 2x

4 = 4x

x = 1

y = -2(1) - 6

y = -8

8 0

3 years ago

Read 2 more answers

18 shirts for 279.45 what is the unit rate of the shirts?

adelina 88 [10]

The answer is 15.525. All you have to do is divide 279.45 by 18 which gives you 15.525.

3 0

3 years ago

How do you solve Jason ran 325 meters farther that Kim ran. Kim ran 4.2 kilometers how many meters did Jason run? Estimate to ch

labwork [276]

Change 4.2 kilometers to meters, which is 4200 meters, then add that to 325, so 4525 :)

5 0

3 years ago

WILL GIVE BRAINLIST AS SOON AS I CAN. PLEASE HELP.​

WILL GIVE BRAINLIST AS SOON AS I CAN. PLEASE HELP.