3 years ago

3. Evaluate (-2)^3 + (-5+8)/3-15

Mathematics

1 answer:

Ann [662]3 years ago

3 0

The answer to this problem would be -22

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Written as a simplified polynomial in standard form, what is the result when (x-8)^2

neonofarm [45]

Answer:

26x-67-x²

Step-by-step explanation:

We are given

$(10x - 3) - (x - 8) {}^{2}$

Expanding (x-8)²=x²-16x+64

10x-3-(x²-16x+64)

10x-3-x²+16x-64

26x-67-x²

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2 years ago

Which statements are true about the graph of the function f(x) = x2 – 8x + 5? Check all that apply.

gregori [183]

D. The y-intercept of the function is (0, 5) and e. The function crosses the x-axis twice are true

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3 years ago

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what equation is used to represent "three minus the difference of a number and one equals one-half of the difference of three ti

sesenic [268]

(n-1)-3=1/2(3n-4)
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3 years ago

Solve using the quadratic formula: 2n^2= 6n - 2

bekas [8.4K]

Answer:

$n_1=(3 + 1\sqrt{5} )/2\\\\n_2=(3 - 1\sqrt{5} )/2$

Step-by-step explanation:

$2n^2= 6n - 2\\\\2n^2-6n+2=0\\\\a=2\\\\b=-6\\\\c=2$

$n=(-b \pm \sqrt{b^2-4ac} )/2a\\\\n=(-(-6) \pm \sqrt{(-6)^2-4(2)(2)} )/2(2)\\\\n=(6 \pm \sqrt{36-16} )/4\\\\n=(6 \pm \sqrt{20} )/4\\\\n=(6 \pm 2\sqrt{5} )/4\\\\n=(3 \pm 1\sqrt{5} )/2\\\\n_1=(3 + 1\sqrt{5} )/2\\\\n_2=(3 - 1\sqrt{5} )/2$

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2 years ago

I need help with this, i also have a photo to help.

professor190 [17]

The account A has amount $600 and B has $1600.

<u>Step-by-step explanation:</u>

The given equations are:

a+b=2200 ⇒1

0.03a+0.05b=98 or $\frac{3}{100}a$ + $\frac{5}{100}b$ ⇒2

Change the first equation by isolating a,

a = 2200-b. ⇒3

Apply equation 3 in 2,

$\frac{3}{100}(2200-b)$ + $\frac{5}{100}b$ =98.

66- $\frac{3}{100} b$ + $\frac{5}{100}b$ =98.

66+ $\frac{2}{100} b$ = 98.

6600+2b=9800.

2b=9800-6600.

2b=3200.

b=1600.

Substitute b value in equation 3

a=2200-1600.

a=600.

8 0

2 years ago