1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kherson [118]
2 years ago
11

1. (-4)+(-18)=

Mathematics
2 answers:
Vesnalui [34]2 years ago
7 0

Answer:

1. (-4)+(-18) = -4-18 = -22

2. 5-14 = -9

3.(-12)-7 = -12-7 = -19

4.10+(-16) = 10-16 = -6

bogdanovich [222]2 years ago
4 0
1. -4-18= -22
2. 5-14=-9
3. -12(-7)=+84
4. 10-16=-6
You might be interested in
A line segment whose endpoints are (2,6) and (8,y) is perpendicular to a line whose slope is -4. What is the value of y?
Mariulka [41]
If the line segment is perpendicular to a line with the slope of -4, that means the line segment has a slope of 1/4.

First let's make an equation for the line segment using the slope of 1/4 and the point at (2,6) to find the final piece, the y-intercept

y = mx + b
6 = 1/4(2) + b
6 = 2/4 + b
24/4 = 2/4 + b
22/4 = b

y = 1/4 x + 22/4
6 = 1/4(2) + 22/4
6 = 2/4 + 22/4
6 = 24/4
6 = 6 <-- proves that this equation is correct

Now you may plug in the x to find y. ( 8 , y )
y = 1/4(8) + 22/4
y = 8/4 + 22/4
y = 30/4 = 15/2 = 7.5
4 0
3 years ago
What is the reciprocal of 2 and 3/8
Leviafan [203]
To find the reciprocal of a number or fraction, just flip the numerator and denominator. Whole numbers are always over 1. 

 2 = \frac{2}{1}

The reciprocal of \frac{2}{1} =  \frac{1}{2} or .5 (one-half)

The reciprocal of \frac{3}{8} =  \frac{8}{3}
8 0
3 years ago
Read 2 more answers
A ball is launched from 8 yards off the ground and travels in parabolic motion, landing in a net 80 yards away and also 8 yards
Masteriza [31]

Answer:

The answer to this question is the wall is 45.95 yards tall

Step-by-step explanation:

To solve this, we list out the given variables and the unknowns thus

Height of ball at launch = 8 yards

Distance of net from the ball = 80 yards

Distance of the wall down the path = 75%

Maximum height of the ball= 80 yards

equation of Motion of the ball = parabolic motion =

v² = u² - 2gS

S = 80 - 8 = 72 yards

at maximum height v = 0 thus u² = 2×9.81×72 =1412.64

u = 37.59 m/s

also v = u - gt and again at max height v = 0

Therefore 37.59 = 9.81×t or t = 3.83 s

If the motion of the ball is free of obstruction then time of flight before the ball just reaches the 8 yards off the ground = 3.83×2 = 7.66 seconds

Taking the initial velocity as zero at maximum height and from the equation

S = ut + 0.5×gt² we get, where S is the heigt of the ball from touching the actual field ground which is 80 yards we have

80 = 0.5×9.81×t²

so that t² = 2×80÷9.81 = 16.31 or t = 4.04s

Therefore the total time of flight = 4.04 + 3.83 = 7.87 seconds

if the ball is considered as having a constant horizontal velocity, therefore

at 75% of the way the time it took will be 0.75×7.87 = 5.9 seconds

However time it took  the  ball to reach maximum height and then starts descent = 3.83s, and the time at which the ball is directly over the wall = 2.07 seconds on the second half just after reaching mximum height

Thus at 2.07 seconds the distance trvelled from the maximum height is

S = ut +0.5gt² as before where u = 0

hence S = 0.5×9.81×2.07² = 21.05 yards or (80 -21.05) yards off the ground =  58.95 yards

As stated in the question, the ball cleared the wall by 13 yards therefore the height of the wall is 58.95 - 13 = 45.95 yards

7 0
2 years ago
rite an equation with the solution x=20. the equation of the variable on both sides, a fraction coefficient on the left side, an
eimsori [14]
1/2x+10=5/10x+10 that's how you do it
5 0
3 years ago
(15 POINTS AHH) Which of the following square roots is irrational?
dem82 [27]

Answer:

Triangle

Step-by-step explanation:

The square root of 99 is irrational.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Q # 17 , Find the slope
    9·2 answers
  • F (x)=2x+1 and g (x)=x^2-7, find (f/g)(x)
    8·2 answers
  • List 3 values that would make this inequality true. 65&lt;15x
    13·2 answers
  • Oxerville middle school is going to rent some vans to take students on a field trip. each van can hold 8 students. if a total of
    6·1 answer
  • How do you solve shaded areas
    9·1 answer
  • Could someone help me with my algebra expressions homework?
    12·1 answer
  • Line BE, line FC, and ray AD intersecting at A
    6·2 answers
  • Which expression is equivalent to b^-3/ab^-3?
    13·1 answer
  • Use the proportion. What is 72% of 150
    8·2 answers
  • X + x(x + y) + y; use x = 4, and y = 1
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!