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3 years ago

Simplify to create an equivalent expression.

Mathematics

1 answer:

Olin [163]3 years ago

8 0

−y−3(−3y+5)
= −y + 9y - 15
= 8y - 15

answer
d.8y-15

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Begin by clearly stating the problem; you can copy this from the problem set file. Show how you solved the problem step by step,

Y_Kistochka [10]

Answer: 13%

Step-by-step explanation:

The formula to find the simple interest is given by :-

$I=Prt$ , where P is the principal amount, r is rate of interest () in decimal and t is the time ( in years).

Given : P = $19,100 , I=$9932.00 and t= 4 years

Substitute all the above values in the formula , we get

$9932.00=(19100)r(4)\\\\\Rightarrow\ r=\dfrac{9932}{19100\times4}\\\\\Rightarrow r=\dfrac{13}{100}=0.13$

In percent , $r=0.13\times100=13\%$

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3 years ago

Solve the following quadratic function by using the quadratic formula: x^2 + 2x - 1 = 2 *

elena55 [62]

Answer:

x = 1 or x = -3

Step-by-step explanation:

$ax^{2}$ + bx + c = 0

x = $\frac{-b±\sqrt{b^{2}-4ac } }{2a\\}$

as $x^{2}$ + 2x - 1 = 2 ⇔ $x^{2}$ + 2x - 3 = 0, its solution is

x = $\frac{-2±\sqrt{2^{2}-4 *1*(-3)} }{2*1}$

= $\frac{-2±\sqrt{4+12} }{2}$ = $\frac{-2±\sqrt{16} }{2}$ = $\frac{-2±\ 4 }{2}$

therefore, x = 1 or x = -3

hope this helps! :D

have a miraculous day, and brainliest is immensely appreciated!! <3

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3 years ago

Find the value of x. If necessary, round to the nearest tenth.

barxatty [35]

A = 1/2bh
27 = 1/2 x^2
x^2 = 54
x = 7.3

answer
x = 7.3

8 0

3 years ago