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
timama [110]
3 years ago
10

What is the value of the expression below when x=4x=4? 7x^2 +8x-7 7x 2 +8x−7

Mathematics
1 answer:
Vinil7 [7]3 years ago
3 0

Answer: 137

Step-by-step explanation:

The given expression: 7x^2 +8x-7

We need to find the value of the expression when x=4.

So we just use the substitution property and substitute the value of x= 4 in the given expression , we get

7(4)^2+8(4)-7\\\\= 7(16)+32-7\\\\= 112+25\\\\=137

Hence, the value of the expression at x=4 is 137.

You might be interested in
Kelly sees some fish at the pet shop . A man buys 2 fish .a boy buys 4 fish . Now there are 3 fish . How many fish did Kelly see
Studentka2010 [4]
There were 9 fish at first.
8 0
3 years ago
Read 2 more answers
What is the side length of the square shown Below. Please SHOW your work.
barxatty [35]

Answer:

side length = (x+11)

Step-by-step explanation:

area = x^2+22x+121

side length = sq rt (x^2+22x+121)

side length = (x+11)

4 0
3 years ago
Read 2 more answers
What is the scientific notation of 0.005927?
Papessa [141]
<span> 5.927 × 10<span>^-3 is your answer</span></span>
6 0
3 years ago
Read 2 more answers
Can you guys please help me im confused
JulijaS [17]

Answer:

The bullet point between the numbers means times in this case, in some other cases it would mean "and" also known as plus. Therefore, the correct answer is the second one.

Step-by-step explanation:

In each half unit cube there is 6 cubes. ⇒

6 + 6 + 6 = 18 ⇒

But, this is not one of the options.⇒

So, we have to make the equation a bit different to solve it. ⇒

2 x 3 x 2, is the first option. ⇒

This is incorrect, as it equals 12. ⇒

The sum we are looking for is 18. ⇒

The second answer is 2 x 3 x 3. ⇒

This equals 18, we have found the correct answer. ⇒

So, there are a total of 3 half-unit cubes. ⇒

There are a total of 18 cubes. ⇒

I hope this helps!

4 0
3 years ago
Read 2 more answers
The drawing below shows the dimensions of skims kite what is the area of Kim's kite ​
Leno4ka [110]

Answer:

48 square inches

Step-by-step explanation:

Given

See attachment for kite

Required

The area of the kite

The given kite has a triangular shape.

So, the area is:

Area = 0.5 * base * height

From the attachment

base = 12in

height = 8in

So:

Area = 0.5 * 12in* 8in

Area = 48in^2

4 0
3 years ago
Other questions:
  • I need help ASAP please answer quickly
    10·1 answer
  • Which function represents the graph of<br> y=3(3)x?
    6·1 answer
  • Tom, Scott and dawn sold cookies at the school fair. Tom had 90 cookies and sold 60% of them. Scott had 150 cookies and sold 2/3
    10·1 answer
  • Will make bianleast
    8·1 answer
  • How to find the arc length of a circle
    11·1 answer
  • Anyone know this question?
    9·1 answer
  • Dorothy Wagner is currently selling 80 "I ♥ Calculus" T-shirts per day, but sales are dropping at a rate of 2 per day. She is cu
    10·1 answer
  • What is 0.285714 as a fraction not simplified
    12·1 answer
  • Harold opened a credit card at a department store with an APR of 14.55% compounded monthly. What is the APY on this credit card?
    14·1 answer
  • Pierre is an artist. Last week he bought 5 brushes and 6 tubes of paint for $43. This week he bought 12 tubes
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!