Combine like terms. 8 + 19t – 6t 8 – 13t 21 21t 8 + 13t

2 answers:

8 0

Hi there! The answer is 8 + 13t

We can combine 19t and -6t. When we subtract these from each other, we get the following: 19t - 6t = 13t
(If you don't understand this, you can see it as a story -- You have 19 apples (19a) and subtract 6 apples (6a), what's left? Answer 13t)

We can't add the seperate number (8) to this 13t, so it rests "free-standing"
Hence, 8 + 13t

sergeinik [125]3 years ago

5 0

Heya !! here is your answer --

8 + 19t -6t + 8 - 13t
= 8 + 8 - 19t + 19t
= 16

You might be interested in

Parallelogram ABCD has vertices: A(-3, 1), B(3, 3), C(4, 0), and D(-2, -2). In two or more complete sentences, explain how you c

mina [271]

You have to shoe that the angles between adjacent sides = 90 degrees. You do do this by showing the adjacent sides are perpendicular by comparing their slopes.

4 0

3 years ago

Read 2 more answers

Write an equation for a line that has slope of 4 and y- intercept of 7

grigory [225]

Answer:

y = 4x + 7

Step-by-step explanation:

the equation for a line is y = mx+b

the y intercept is (0,7)

so in the equation x= 0 and y= 7 and the slope is m, thus m= 4

7= (4)(0)+b

now solve for b

7 = 0 +b

7= b

so the equation of the line would be without the x and y points

y = 4x + 7

6 0

3 years ago

A light bulb has a lifetime X that is exponentially distributed with a mean 340 hours. Find the probability that the bulb lifeti

LUCKY_DIMON [66]

Answer:

0.7026

Step-by-step explanation:

Let X denote the lifetime of light bulb. Given $X \sim Exp(\lambda)$ where the mean is $E(X) = 340 =\frac{1}{\lambda} \implies \lambda = \frac{1}{340} = 0.00294$ .

Recall that,

$\displaystyle P(X>x) = 1 - \int_0^x e^{-\lambda x} = 1 - (1 - e^{-\lambda x} = e^{-\lambda x}$

$\displaystyle P(X>220 | X>100) = \frac{P(X>220,X>100)}{P(X>100)} = \frac{e^{-\lambda \times 220}}{e^{-\lambda \times 100}} = \frac{0.5236}{0.7452} = 0.7026$