Pls HELPPP ! solve the systems of equations of x+2y=21 and -2x-y=-12

A scuba diver starts at 85 3/4 meters below the surface of the water and descends until he reaches 103 1/5

RSB [31]

Answer:

From his starting point of 85 3/4, he descended 17 9/20 meters

Step-by-step explanation:

We want to know how much farther he went down from his starting point.

103 1/5 - 85 3/4

S

tart off by making the denominators of both the numbers the same.

103 1/5 - 85 3/4

103 4/20 - 85 15/20

Make them into improper fractions

2064/20 - 1715/20 = 349/20

Make 349/20 into a mixed fraction

17 9/20

5 0

2 years ago

A number n is no less than -3. what is the inequality

vazorg [7]

Answer:

n ≥ -3

Step-by-step explanation:

If n can be no less than -3... then we know that n has to be bigger than or equal to -3.

This could also be said as greater than or equal to -3

Conveniently enough... there is a sign for greater than or equal to and it is ≥

6 0

2 years ago

A customer member owe 16.50 and pays $20 in cash the change due is 3.50 provide the amount owe using the smallest number of bill

Daniel [21]

Answer:

4

Step-by-step explanation:

2 plus 6 is 8, 8 divided by 2 is 4

7 0

2 years ago

Read 2 more answers

Enter the factor under the radical <img src="https://tex.z-dn.net/?f=%28a%20-%20b%29%20%5Csqrt%7Ba%20-%20b%7D%20" id="TexForm

kvasek [131]

$\\ \rm\longmapsto (a-b)\sqrt{a-b}$

$\\ \rm\longmapsto (a-b)(a-b)^{\frac{1}{2}}$

$\\ \rm\longmapsto (a-b)^{1+\dfrac{1}{2}}$

$\\ \rm\longmapsto (a-b)^{\dfrac{3}{2}}$

3 0

2 years ago

Read 2 more answers

What is the simplified value of the exponential expression 273? 不 1 Ο Ο Ο 9

gavmur [86]

Answer:

The answer is 3

For the steps, Im leaving it blank for you to figure it out first.

If you really need help, ask anytime and I'll reply as soon as i can :)

7 0

2 years ago