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
damaskus [11]
3 years ago
6

Just want to know if I got them right.I got 100 for number one

Mathematics
2 answers:
Firlakuza [10]3 years ago
8 0
1. X= 100
2. C= 1
3. X= 11
4. M= 12
5. B= 5
6. Y= 3

Work:
1). 5(x + 2) = 510
5(100 + 2)= 510
5(102)=510
X=100

Please mark brainliest
Makovka662 [10]3 years ago
7 0
5(x+2)=510
5x+10=510
510-10=500
5x/5=500/5
x=100

4(2c+5)=28
8c+20=28
8c/8=8/8
c=1

3(x-5)=30
3x-15=30
3x=45
3x/3=45/3
x=15

n(3+4)=84
n3+n4=84
n7/7=84/7
n=12

5(b-3)=10
5b-15=10
5b=25
5b/5=25/5
b=5

1.5(2y+5)=__?
y=__?
You might be interested in
Find f(-5) and f(12) for each piecewise function f(x){-4x+3 if x<3
Law Incorporation [45]
<h3>Answers:</h3>
  • f(-5) = 23
  • f(12) = 433

==================================================

Explanation:

The given piecewise function is

f(x) = \begin{cases}-4x+3 \ \text{ if } \ x < 3\\-x^3 \ \text{ if } \ 3 \le x \le 8\\3x^2+1 \ \text{ if } \ x > 8\end{cases}

At first piecewise functions may be strange confusing things, but they aren't so bad. I like to think of it like this: f(x) is a function that changes its identity based on what the input x is. We have three situations

  • f(x) = -4x+3 when x < 3
  • f(x) = -x^3 when 3 \le x \le 8
  • f(x) = 3x^2+1 when x > 8

In a sense, we have three different functions but they are combined somehow.

If x is smaller than 3, then we go for the first definition. Or if x is between 3 and 8, then we go for the second definition. Or if x is larger than 8, then we go for the third definition.

-----------------------

f(-5) means f(x) when x = -5. We see that -5 is smaller than 3, so x = -5 makes x < 3 true. We'll use the first definition

f(x) = -4x+3

f(-5) = -4(-5)+3

f(-5) = 20+3

f(-5) = 23

------------------------

Now the input is x = 12. This is larger than 8. In other words, x = 12 makes x > 8 true. We'll use the third definition

f(x) = 3x^2+1

f(12) = 3(12)^2+1

f(12) = 3(144)+1

f(12) = 432+1

f(12) = 433

------------------------

Side notes:

  • We won't use the second definition since we don't have any x inputs between 3 and 8
  • To say "less than or equal to" on a keyboard, you can write "<=" without quotes. For example, x \le 5 is the same as x<=5
3 0
3 years ago
What set of numbers are equivalent to 75%
VMariaS [17]

Answer:

Decimal= .75

fraction= 75/100; 3/4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How do you find the midsegments of triangles?
ipn [44]
<span>it divides two sides of a triangle equally. The midpoint of a side divides the side into two equal segments.</span>
4 0
3 years ago
3x + y = 6<br> 5x - 2y = 10
Eddi Din [679]

Answer:

x=2

y = 0

Step-by-step explanation:

3x + y = 6         -------------(i)

5x - 2y = 10      -------------(ii)

Multiply (i) by 2   ===>   6x +2y = 12

                     (ii)  ===>   <u> 5x - 2y =  10</u>

add   ============>    11x       = 22

                                              x = 22/11

                                              x = 2

Substitute x = 2 in (i)

       3*2 + y = 6

           6 + y = 6

                 y =  6 - 6

                 y = 0

3 0
3 years ago
Sunday bought a piece of fabric that is 500 cm long.What is this length in meters?
viva [34]

Answer:

5 m

Step-by-step explanation:

1 m = 100cm

therefore

5m = 500 cm

6 0
2 years ago
Read 2 more answers
Other questions:
  • Is 0.45 irrational or rational
    6·2 answers
  • al's auto shop charges $80 for parts and $20 per hour of labor for repair job. Ednas engine repair charges $95 for parts and $15
    12·1 answer
  • David has a checking account. His opening balance on 3/1 was $120. The bank charges a 30¢ fee for each debit card transaction an
    7·2 answers
  • A homeowner has 5 cherry tomato plants in her garden. Over the course of the season the yields (in pints of tomatoes per plant)
    13·1 answer
  • Please help me. My homework is due tomorrow.
    13·1 answer
  • Which value is equivalent to 15 − 4 × 2? A) 2 B) 7 C) 9 D) 23
    13·2 answers
  • Write the following decimals as fractions.
    14·1 answer
  • A scientist needs 80 liters of a 30% solution of alcohol. She has a 20% solution and a 60% solution available. How many liters o
    5·1 answer
  • Sarah needs to cover a triangle that has a base of 3¼ inches and a height of 5½ inches. What is the area that Sarah needs to cov
    14·1 answer
  • Find the first four terms of the sequence given by the following.<br> aₙ=43-3(n-1) n=1,2,3. . .
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!