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
sweet [91]
2 years ago
5

Math is awfully hard

Mathematics
1 answer:
muminat2 years ago
7 0

Answer:

b= -15

a= 18

Step-by-step explanation:

You might be interested in
If 1900 square centimeters of material are available to make a box with a square base and an open top, find the largest possible
Evgen [1.6K]

Answer:

Volume = 7969 cubic centimeter

Step-by-step explanation:

Let the length of each side of the base of the box  be A and the height of the box be H.

Area of material required to make the box  is equal to  is A^2 + 4*A*H.

A^2 + 4*A*H = 1900

 Rearranging the above equation, we get -  

`H = \frac{(1900 - A^2)}{(4*A)}

Volume of box is equal to product of base area of box and the height of the box -  

V = A*A* H

Substituting the given area we get -

\frac{A^2*(1900 - A^2)}{4A} = \frac{(1900*A - A^3)}{4}

For maximum volume

\frac{dV}{dA} =0

\frac{ 1900}{4} - \frac{3*A^2}{4} = 0

A^2 = \frac{1900}{3}

Volume of the box

= \frac{\frac{1900}{3}*(1900 - \frac{1900}{3}) }{4 * \sqrt{\frac{1900}{3} } }

= 7969 cubic centimeter

3 0
3 years ago
Whats the meaning of the tiatary industry​
Vesna [10]

Answer:

Its the segment of the economy that provides services to its consumers, including a wide range of businesses such as financial institutions, schools and restaurants.

Step-by-step explanation:

Hope this helps and have a great day

4 0
3 years ago
Read 2 more answers
Expand and simplify 4(2x +7) – 3(x + 5)
Vikentia [17]

Answer:

4\left(2x+7\right)-3\left(x+5\right)=5x+13

Step-by-step explanation:

Given the expression

4\left(2x+7\right)-3\left(x+5\right)

<u>Expand and simplify the expression</u>

4\left(2x+7\right)-3\left(x+5\right)

Expand  4(2x + 7) = 8x + 28                  

4\left(2x+7\right)-3\left(x+5\right)=8x+28-3\left(x+5\right)

Expand  -3(x + 5) = -3x - 15

                                 =8x+28-3x-15

Group like terms

                                  =8x-3x+28-15

Add similar elements:  8x - 3x = 5x

                                   =5x+28-15

Simplify

                                    =5x+13

Therefore, we conclude that:

4\left(2x+7\right)-3\left(x+5\right)=5x+13

6 0
3 years ago
Please help i will give brainlist don't answer if you don't know it
Troyanec [42]

Answer:

1:

Step-by-step explanation:

7 0
2 years ago
Marci measured an angle in the intersection of two walkways in a city park as 115°. What is the value of s?
Aleksandr-060686 [28]

Answer:

the answer is D

Step-by-step explanation:

180-115 = 65

7 0
3 years ago
Read 2 more answers
Other questions:
  • jessica walks 3 and 2/5 miles each day. which of the following statments correctly describes how far she walks? A=jessica walks
    8·1 answer
  • A baby blue whale weighed 3 ton at birth. Ten days later, it weighed 4 tons. Assuming the same rate of growth, which equation sh
    5·1 answer
  • The graph points four equations, a, b, c, and d which pair of equations had (0,8) as its solution
    12·1 answer
  • What integer describes a profit of $650?
    7·2 answers
  • X divided by 6 is 4. What is Z?
    12·1 answer
  • Find the missing side length in the attached image.
    7·1 answer
  • If x and y vary inversely and x = 8 when y = 23, what is y when x = 4?​
    13·2 answers
  • Movies and More is having a one-day sale on certain movie DVDs and video games. You can buy 3 DVDs and 2 video games for $74. Or
    7·1 answer
  • Please help I'll give Brainliest urgent!!!!!!!!!!!!!
    15·2 answers
  • For every 10 tickets to a horror movie that a popular movie theater sells, they sell 9 tickets to a comedy movie. If they sold 5
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!