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earnstyle [38]
4 years ago
8

What does a negative minus a positive equal to

Mathematics
1 answer:
Elan Coil [88]4 years ago
6 0
A negative number minus a positive would be negative . EX : -7 - 2. Since you use the rule of subtraction, it would turn into -7 + -2. Which would be -9. Do you understand ? If you have any questions feel free to ask me !
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A lawyer drives from her home, located 15 miles east and 28 miles north of the town courthouse, to her office, located 6 miles w
natali 33 [55]

Answer:

Step-by-step explanation:

I know the answer is 26 miles but I cannot figure out how they came up with that answer using the distance formula.It looks like you need to find the shortest distance (as the crow flies) between the home and the office.

Use the Pythagorean Theorem.

6^2 + 10^2 = c^2

136 = c^2

11.67 = c

4^2 + 14^2 = c^2

212 = c^2

14.56 = c

11.67 + 14.56 = 26.2 = 26 miles

4 0
3 years ago
What’s the square root of 25
Reptile [31]

Answer:

5

Step-by-step explanation:

3 0
3 years ago
An ellipse has a center at the origin, a vertex along the major axis at (10, 0), and a focus at (8, 0). Which equation represent
Alchen [17]
Check the picture below.  So the ellipse looks more or less like so.

since the major axis is over the x-axis, is a horizontal ellipse, notice the "a" component length and the value for "c".

\bf \textit{ellipse, horizontal major axis}
\\\\
\cfrac{(x- h)^2}{ a^2}+\cfrac{(y- k)^2}{ b^2}=1
\qquad 
\begin{cases}
center\ ( h, k)\\
vertices\ ( h\pm a,  k)\\
c=\textit{distance from}\\
\qquad \textit{center to foci}\\
\qquad \sqrt{ a ^2- b ^2}
\end{cases}\\\\
-------------------------------

\bf \begin{cases}
h=0\\
k=0\\
a=10\\
c=8
\end{cases}\implies 8=\sqrt{a^2-b^2}\implies 8^2=a^2-b^2\implies b^2=10^2-8^2
\\\\\\
b=\sqrt{100-64}\implies b=6
\\\\\\
\cfrac{(x-0)^2}{10^2}+\cfrac{(y-0)^2}{6^2}=1\implies \cfrac{x^2}{100}+\cfrac{y^2}{36}=1

3 0
4 years ago
Read 2 more answers
Jordan is a manager of a car dealership. He has two professional car washers, Matthew and Arianna, to clean the entire lot of ca
Svetach [21]

Answer:

6.16 hours

Step-by-step explanation:

Let the number of hours that washed the car together = T

Number of hours Matthew washed = m = 14 hours

Number of hours Arianna washed = a = 11 hours

The formula to calculate how many they wash the cars together is given as

1/a + 1/m = 1/T

1/14 + 1/11 = 1/T

Lowest Common Denominator = 154

Hence:

(11 + 14)/154 = 1/T

25/154 = 1/T

Cross Multiply

154 × 1 = 25 × T

T = 154/25

T = 6.16 hours

Therefore, it will take Matthew and Arianna 6.16 hours to wash the cars together

5 0
3 years ago
There are 56 treats to be given to 10 pets. Some of those are cats, others are dogs.
Elza [17]
Your equations would be

c+d=10
5c+6d=56     (c= # of cats, d= # of dogs)  Then solve

I am using elimination and multiply the first equation by -5

-5c-5d=-50
5c+6d=56

Then eliminate

-d=-6   Divide by -1   d=6

Then solve for c

c+6=10
c=4

Hope this helps!
8 0
4 years ago
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