4 years ago

Can someone help me with 14

Mathematics

1 answer:

ra1l [238]4 years ago

7 0

200 because I looked it up

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A hot air balloon is 10 meters above the ground and rising at a rate of 15 meters pre min. Another ballon is 150 meters above th

Alisiya [41]

I think they will meet in 4 minutes.

Explanation
10+15+15+15+15=70
150-20-20-20-20=70
Every minute the first balloon goes up 15 meters and the second balloon goes down 20 meters.

6 0

3 years ago

State the domain, the range, and the intervals on which function is increasing, decreasing, or constant in interval notation

aleksandr82 [10.1K]

Answer:

Domain: $[-1,\infty)$

Range: $(-\infty, 3]$

Decreases over: $(-1,-\infty)$

Step-by-step explanation:

Given

$f(x) = -\sqrt{x + 1} + 3$ --- Missing from the question

Solving (a): The domain

To get the domain, the expression under the square root must not be negative.

In other words:

$x + 1 \ge 0$

Solve for x

$x + 1 -1\ge 0-1$

$x \ge -1$

Hence, the domain is:

$[-1,\infty)$

To get the range, we plot the values of the domain in the expression.

$x = -1$

$f(x) = -\sqrt{x + 1} + 3$

$f(-1) = -\sqrt{-1+1} +3$

$f(-1) = -\sqrt{0} +3$

$f(-1) = -0 +3$

$f(-1) = 3$

$x = \infty$

$f(\infty) = -\sqrt{\infty +1}+3$

$f(\infty) = -\sqrt{\infty}+3$

$f(\infty) = -\infty+3$

$f(\infty) = -\infty$

So, the range is: $(-\infty, 3]$

To get the interval where the function increases or not, we simply plot the graph of f(x).

See attachment for graph.

From the attachment, it will be observed that the graph of f(x) continuously decreases from x = -1, and it never increased.

This implies that, the graph decreases over the interval $(-1,-\infty)$

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=%283%20%5Csqrt%7B4%293%7D%20" id="TexFormula1" title="(3 \sqrt{4)3} " alt="(3 \sqrt{4)3} " ali

MatroZZZ [7]

Answer:

18

Explanation:
Square root of 4 is 2. So replace it
(3x2) 3
6 x 3 = 18

4 0

3 years ago

Read 2 more answers

A family is driving to their destination They drove 200 miles in 5 hours if they drove at the same rate for the whole trip home

grandymaker [24]

Answer:

266.66

Step-by-step explanation:

4 0

3 years ago

What is the second one

padilas [110]

C + D + E = 180
C + 63 + 35 = 180
C + 98 = 180
C = 180 - 98
C = 82°

4 0

3 years ago