Multiply the expression

Mathematics

1 answer:

user100 [1]3 years ago

8 0

Answer:

-26.

Step-by-step explanation:

4 * 2 * (-3) + (-10) / 5

Deal with the parentheses first (PEMDAS).

= 4 * 2 * -3 - 10 / 5

Now the multiplications and divisions:

= 8 * -3 - 2

= -24 - 2

= -26.

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Type the correct answer in each box. If necessary,use/for the fraction bar

Tems11 [23]

0.666... is equal to 2/3 and 0.75 is equal to 3/4. 2/3 x 3/4= 6/12 which simplifies to 1/2 or 0.5.
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7 0

3 years ago

The CHS Baseball team was on the field and the batter popped the ball up. The equation b(x)=80t-16t^2+3.5 represents the height

Aleksandr [31]

Answer:

t = 5 seconds

Step-by-step explanation:

We must solve the equation of movement of the ball as a function of time in seconds.

We must find how many seconds it takes until the ball touches the ground. When the ball touches the ground, the height b (t) = 0

Then we equate the equation to zero and solve for t.

$80t-16t ^ 2 + 3.5 = 0$

Use the quadratic formula.

Where

$a = -16\\\\b = 80\\\\c = 3.5$

$t = \frac{-b \±\sqrt{b^2-4ac}}{2a}\\\\\\t_1 = \frac{-(80)-\sqrt{(80)^2-4(-16)(3.5)}}{2(-16)}\\\\t_1= 5.04\ s\\-------------------------\\t_2 =\frac{-(80)+\sqrt{(80)^2-4(-16)(3.5)}}{2(-16)}\\\\t_2=-0.0434\ s$