All categories

4 years ago

-15 + 8 = A) -23 B) -7 C) 11 D) 23

Mathematics

2 answers:

bagirrra123 [75]4 years ago

6 0

Answer:

B) -7

Step-by-step explanation:

since since since there is more of the negative number then the positive number, the positive number gets canceled out.

NemiM [27]4 years ago

5 0

Negative twenty three

You might be interested in

the modes of a 7 set of numbers is m and n. the average is 18. three of the 7 numbers are 2m-3, m+12, and 3n+2. what is the valu

Triss [41]

Answer:

m+n=23

Step-by-step explanation:

the modes m and n have to be data points more than 1 time, but equal

if there are 7 data points, then there are 4 unknown left/2 2 each

(2m-3+m+12+3n+2+m+m+n+n)/7=18

(3m+9+3n+2+m+m+n+n)/7=18

(5m+5n+11)/7=18

(5/7)*m+(5/7)*n+11/7=126/7

(5/7)*m+(5/7)*n=115/7

5m+5n=115

m+n=115/5

m+n=23

8 0

3 years ago

The one that said there should be a choose number of trial. the answer chose are greater or lesser

Alexeev081 [22]

Answer:

The first option is greater. The second option is more. The third option is 50%.

Step-by-step explanation:

Flipping a coin heads or tails expected probability is 50%. The more trials there are, the more accurate the actual probability will be.

Hope this helps!

6 0

3 years ago

An airplane is traveling in the direction 20 degrees west of north at 700 km/hr. Find the component form of the velocity of the

OLga [1]

Answer:

(-239.4, 657.8) km/h

Step-by-step explanation:

Measured CCW from the +x axis, the angle at which the airplane is traveling is 110°. Then the (x, y) components of the velocity vector are ...

(700 km/h)(cos(110°), sin(110°)) ≈ (-239.4, 657.8) km/h

4 0

3 years ago

What is the 75th term of the arithmetic sequence -1, 5, 11

lana [24]

Answer:

75th term = 443

Step-by-step explanation:

$a_{n}=a_{1}+d(n-1) \\a_{n}=-1+6(n-1) \\a_{75}=-1+6(75-1) \\a_{75}=-1+6(74)\\a_{75}=-1+444\\a_{75}=443 \\\\$

7 0

3 years ago

Which equation represents the hyperbola in general form?

valina [46]

ANSWER

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

EXPLANATION

The standard equation of the hyperbola is

$\frac{ {(y - 2)}^{2} }{4} - \frac{ {(x - 2)}^{2} }{9} = 1$

We multiply through by 36 to obtain:

$9 {(y - 2)}^{2} - 4( {x - 2)}^{2} = 36$

We now expand to get,

$9( {y}^{2} - 4y + 4) - 4( {x}^{2} - 4x + 4) = 36$

Expand :

$9 {y}^{2} - 36y + 36 - 4 {x}^{2} + 16x - 16 = 36$

To get the general form, we equate everything to zero to get,

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

The correct choice is D.

7 0

4 years ago