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
Lana71 [14]
2 years ago
7

Using substitution, evaluate the expression b-a, if a = -14 and b = -7.

Mathematics
1 answer:
Tanya [424]2 years ago
4 0
A = -14
b = -7
b - a
(-7) - (-14)
-7 + 14
7
So the answer is 7
You might be interested in
Whats one and half times 16
malfutka [58]
Okay so 1 \frac{1}{2}*16.

First, we make 16 a fraction:16=\boxed{\boxed{ \frac{16}{1}}}

Then, we make 1 \frac{1}{2} a improper fraction: 1 \frac{1}{2}= \frac{1*2+1}{2}=\boxed{\boxed{ \frac{3}{2}}}

Now, we multiply \frac{3}{2} by \frac{16}{1}: \frac{3}{2}* \frac{16}{1}= \frac{48}{2}

Finally, we simplify \frac{48}{2}: \frac{48:2}{2:2}= \frac{24}{1}=\boxed{\boxed{24}}}.

Your answer is \boxed{\boxed{24}}}}.

Hoped I helped. :)
3 0
4 years ago
Read 2 more answers
Express the following function, as a composition of two functions f and g. h(x)= x^2/(x^+4)
soldi70 [24.7K]
According to defintion of compostion of functions, we can get:

(f\circ g)(x)=f(g(x))

But we know, that:

\displaystyle h(x)= \frac{x^2}{x^2+4}

Our goal, is to express that function as a composition:

(f\circ g)(x)=h(x) \Rightarrow f(g(x))=h(x)

I.e:

\displaystyle f(g(x))=\frac{x^2}{x^2+4}

If \displaystyle f(y)= \frac{y}{y+4} then g(x)=x^2. Hence, \displaystyle h(x)=(f\circ g)(x)=f(g(x))= \frac{g(x)}{g(x)+4} \Rightarrow f(g(x))=f(x^2)= \frac{x^2}{x^2+4}
4 0
3 years ago
The point (1.-3) is on the line given by which equation below?
Assoli18 [71]

Answer:

A. y = -3x

Step-by-step explanation:

Try it. When you substitute the x and y values, you get -3 = -3x1, which is correct.

4 0
3 years ago
John, Johan, and Jonathan collect postage stamps. Johan and Jonathan have the same number of stamps. Two times Johan’s collectio
kati45 [8]
Let d = number of stamps from John (4 letters, d is 4th letter, etc) 
<span>Let e = number of stamps from Johan </span>
<span>Let h = number of stamps from Jonathan </span>

<span>Johan and Jonathan have the same number of stamps, so: </span>

<span>e = h </span>

<span>2 times Johan's collection is 11 less than 5 times John's collection, so: </span>

<span>2e = 5d - 11 </span>

<span>3 times Jonathan's collection is 3 less than 7 times John's collection,so: </span>

<span>3h = 7d - 3 </span>

<span>Now we have three equations and three unknowns. You're asked for the number of stamps in John's collection, so you want the value to variable "d". </span>

<span>Since e = h, we can substitute "h" for "e" in the second equation. </span>

<span>2h = 5d - 11 </span>
<span>3h = 7d - 3 </span>

<span>now we have two equations and two unknowns. I'll use elimination, starting with multiplying the first equation by -3 and the second one by 2. </span>

<span>-6h = -15d + 33 </span>
<span>6h = 14d - 6 </span>

<span>now add both together and you have an equation with one unknown remaining: </span>

<span>0 = -d + 27 </span>
<span>d = 27 </span>

<span>So your answer is 27 stamps. If you want to know how many stamps the others have, you can work back and solve for e and h.</span>
7 0
4 years ago
Read 2 more answers
20700 rounded to the nearest houndredth
kolezko [41]
0.294

hope this helps
3 0
3 years ago
Read 2 more answers
Other questions:
  • A real estate agency offers three apartments for rent in New Mexico City. The expected total revenue per month from monthly rent
    9·1 answer
  • There is a cafe at the carpark it is 13 metres long and 8 metres wide what is the area of the cafe
    7·2 answers
  • Help please. I need the answers
    6·1 answer
  • Find the slope of the line will mark as brain
    13·1 answer
  • Need help asap <br> download the pdf to help me
    13·1 answer
  • I would much appreciate the explanation for number 20 cuz ion’ get it
    9·2 answers
  • Solve for x show work -4 1/4x-7 6/8x=-190
    12·1 answer
  • Past Piper's house at the end of the road were empty fields.
    10·1 answer
  • (a) Write 0.7 as a percentage. <br>(b) Write 43.2% as a decimal.<br><br>help me​
    12·2 answers
  • A recipe calls for 2/3 cup of milk. How much milk should be used to make 1/6 of the recipe?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!