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
scoray [572]
3 years ago
11

What is 4c minus 7.8 if c is 4

Mathematics
1 answer:
Debora [2.8K]3 years ago
5 0
Here is a substitution problem. By saying c is 4, we can replace anywhere we see c with the number 4.

c = 4

4c - 7.8
= 4(4) - 7.8
= 16 - 7.8
= 8.2

Hope this helps! :)
You might be interested in
Divide<br> (-x* + 2x’ +3x– 5x – 2)/(x² – 2x+1)
nata0808 [166]

Answer:

3/4 ÷ 1/2

Step-by-step explanation:

5 0
3 years ago
Francesca leaves her home and Drive South 150 km. Then she drives West 70 km. At this point, she drives North 30 km. Finally, sh
Sveta_85 [38]

To find the distance between her home and her latest position:

According to the question, the diagram is,

Consider the right triangle,

AB=120 km

BC=50 km

To find AC:

Using Pythagoras theorem,

\begin{gathered} AC^2=AB^2+BC^2_{} \\ =120^2+50^2 \\ =14400+2500 \\ =16900 \\ =130\text{ km} \end{gathered}

Hence, the distance between the new position and her home is 130 km.

8 0
1 year ago
(HELP ASAP) Kite EFGH is inscribed in a rectangle where F and H are midpoints of parallel sides.
Reika [66]
Let's say that FH and EG intersection is O,
So we have the following:
OF = 2
OH = 5

Just because F and H are midpoints it means that EO = OG = x
And as it's given the area S=35

On the other hand
S = OF*OG/2 + OG*OH/2 + OH*OE/2 + OE*OF/2 = 2*x/2 + x*5/2 + 5*x/2 + x*2/2 = 2*x + 5*x = 7*x = 35

7x = 35 so x = 35/7 = 5

Answer: 5 units

7 0
3 years ago
Read 2 more answers
romeo makes $12.00 an hour for his first hour of work, $17.00 his second hour, $22.00 his third hour and so on. How much money i
vaieri [72.5K]

Step-by-step explanation:

This can be modeled by the equation f(x)=7+5x

Because if f(1)=7+5=12, f(2)=7+10=17, and f(x)=7+15=22

If x=50 then f(50)=7+5(50)

f(50)=$257

5 0
3 years ago
Cheri walked 12 blocks in 36 minutes. What was Cheri's speed per minute?
Vesnalui [34]
3 is the speed per minute!
3 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help me with these
    9·2 answers
  • Bob guessed there was 560 in they jar but there was actually 620. What percent was Bob's guess incorrect
    15·2 answers
  • A coffee shop sold 7 cups,3 pints, and 9 quarts of coffee. Express the number of cups of coffee sold in base 2
    6·1 answer
  • more thanAn engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 120
    5·1 answer
  • What is the value of x?
    6·1 answer
  • You have 24 feet of fencing that you are using to make a rectangular dog pen. You want the dog pen to enclose 150 square feet. I
    7·1 answer
  • What is m∠AED?<br><br><br><br> Enter your answer in the box.<br><br> °
    15·1 answer
  • I NEED HELP ASAP. (WORTH 50 POINTS)
    6·2 answers
  • Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 81 people
    14·1 answer
  • Find the 98th term of the arithmetic sequence 8, 24, 40, ...8,24,40,...
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!