3 years ago

Choose the best definition for the term: variable

Mathematics

1 answer:

Whitepunk [10]3 years ago

3 0

A: a letter that holds the place for some unknown value in mathematics

You might be interested in

Place

stealth61 [152]

Answer: the farmers market and the bus stop

Step-by-step explanation:

Because I got it right on the quiz

5 0

2 years ago

Erin wrote 5 checks for $35 each. What was the change in her checking account balance after writing these checks?

Neko [114]

$7.00. Because 5 divided by $35 equals $7.00.

7 0

2 years ago

A ladder is leaning up against a 17 foot Wall at an angle of elevation of 37°. How far is the foot of the latter from the wall?

inn [45]

This is the concept of trigonometry, the distance from the foot of the ladder will be given by:
tan theta=[opposite]/[adjacent]
opposite=17 ft
adjacent=x ft
theta=37°
thus
tan 37=17/x
x=17/tan 37
x=22.56 ft
=22.6 ft (to the nearest 10th of a foot)

6 0

3 years ago

Kate is saving to take an SAT prep course that costs $250, so far , she has saved $150, and she adds $10to her savings each week

matrenka [14]

Answer:

It will be ten weeks

Step-by-step explanation:

First you would need to find out what is 250 - 150 = 100 So they will need 100 dollars 100 divided by 10 is 10 so that will be 10 weeks

7 0

2 years ago

Limit

STatiana [176]

Rationalize the numerator:

$\dfrac{\sqrt{x+4}-2}x\cdot\dfrac{\sqrt{x+4}+2}{\sqrt{x+4}+2}=\dfrac{(\sqrt{x+4})^2-2^2}{x(\sqrt{x+4}+2)}=\dfrac x{x(\sqrt{x+4}+2)}=\dfrac1{\sqrt{x+4}+2}$

This is continuous at $x=0$ , so we can evaluate the limit directly by substitution:

$\displaystyle\lim_{x\to0}\frac{\sqrt{x+4}-2}x=\lim_{x\to0}\frac1{\sqrt{x+4}+2}=\frac1{\sqrt4+2}=\frac14$

5 0

3 years ago