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
Fantom [35]
3 years ago
9

What is the value of the expression |-7| + |-42​

Mathematics
1 answer:
RUDIKE [14]3 years ago
3 0

Answer: it is in absolute value form, so when you take it out the signs would change to 7 + 42 = 49

Step-by-step explanation:

You might be interested in
As a motorcycle accelerates at 5.1 m/s2, its speed changes from 16 km/h to 118 km/h. How long does this take?
ser-zykov [4K]
<em>Acceleration (a) = 5.1 m/s</em>²
<em>Initial speed (u) = 16 km/h </em>⇒ \frac{16*1000}{3600} <em>m/s </em>≈ <em>4.5m/s</em><em>
</em>
<em>Final speed (v) =118 km/h </em>⇒ \frac{118*1000}{3600} <em>m/s</em> ≈ <em>32.8m/s</em><em>
</em>

Distance(S) travel in that particular instant is carried out by 'Third equation of motion' i.e., v² = u² + 2aS

<em>So, When all quantities are in S.I. unit then,
</em>
putting the values in the equation of motion,

<em /><em>As we have to carry out the distance covered,
</em><em>2</em>·<em>a</em>·<em>S = v</em>² <em>- u</em>²
<em>S = </em>\frac{ v^{2} - u^{2} }{2a}
Putting values in derived equation,
⇒ <em>S = </em>\frac{ (32.8)^{2} - (4.5)^{2} }{2*(5.1)}
⇒ <em>S = </em>\frac{ 1075.84 - 20.25}{10.2}
⇒ <em>S = </em>\frac{1055.59}{10.2}
⇒ <em>S </em>≈ <em>103.489</em> <em>m
</em><em>
The total distance covered in that given condition is approx. 103.289 m.</em>
8 0
3 years ago
Read 2 more answers
Solve by using the perfect squares method.
Julli [10]
X² + 16x + 64 = 0
x² + 2 * x * 8 + 8² = 0

Now, sing the formula (a + b)² = a² + 2ab + b² , we get,

(x + 8)² = 0

Square rooting on both sides, we get,

x + 8 = √0

x + 8 = 0

x = - 8    <== that's your answer!!!

3 0
3 years ago
Read 2 more answers
Evaluate<br> 4(x+3)(x+1)/(x+5)(x-5) x=3
Aleks04 [339]

Answer:

below

Step-by-step explanation:

4(3 + 1)(3 + 3)(3 + 5)(3 - 5)

4(4)(6)(8)(-2)

16(-96)= -1536

6 0
3 years ago
Solve the equation -3 = -13 - 5x for x
Law Incorporation [45]

Answer:

x = -2

Step-by-step explanation:

-3 = -13 - 5x

-3 + 13 = -5x

10 = -5x

10 ÷ (-5) = x

-2 = x

6 0
3 years ago
Read 2 more answers
PLEASEEEE
belka [17]

Answer:

The answer to your questions is: 25 new teachers

Step-by-step explanation:

Data

# of students = 2000

ratio = 3:80 teachers to students

New teachers = ?

Process

I suggest to use rule of three to solve this problem

                     3 teachers ----------------  80 students

                      x                ----------------  2000 students

                  x = (2000 x 3) / 80 = 75 teachers

               Number of initial teachers = 75

The ratio change to 1:20

                     1 teacher -------------------  20 students

                     x             -------------------   2000 students

                     x = (2000 x 1) / 20

                    x = 100 teachers

Number of new teachers = 100 - 75 = 25

3 0
4 years ago
Other questions:
  • Can anyone answer this for me please?​
    12·1 answer
  • Which of the following is not a possible shape
    10·1 answer
  • Consider the function y=f(x)=3x. The values of f(12) and f(14), rounded to the nearest hundredth, are_______ and__________ , res
    6·2 answers
  • Which description matches the function represented by the values in this
    11·2 answers
  • Ed has 1.2 liters of water. He drank 200 ml how much water was left
    15·1 answer
  • If 3v/7 = 6then v = ? <br> I’m not sure
    5·2 answers
  • I have a brain and I know most of you are using brainly to cheat in school
    15·1 answer
  • Help me with this, please
    14·1 answer
  • What do I do with this...?
    13·1 answer
  • The graph of the function C(x) = −0.74x2 + 22x + 75 is shown. The function models the production cost, C, in thousands of dollar
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!