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
Law Incorporation [45]
3 years ago
12

2x squared plus negative 5 - 10 equals zero

Mathematics
2 answers:
Annette [7]3 years ago
8 0
2x² + (-5) - 10 = =
2x² - 5 - 10 = 0
2x² - 15 = 0
<u>     + 15 + 15</u>
       <u>2x²</u> = <u>15</u>
         2      2
         x² = 7.5
          x ≈ 2.74
Basile [38]3 years ago
7 0
X² will be 7.5 i think the person who answered it below did a very good job congratulation 
You might be interested in
3s(4+6)^2 is an example of
mr_godi [17]

Answer:

the answer for this is D.

Step-by-step explanation:

it is a combination of letters operations and variables.But it is not equated (=) to something that is why it is not an algebraic equation.It is also not a numerical equation or numerical expression because it does not consist of only numbers.

7 0
3 years ago
Estimate the sum. Of 518+251
Snowcat [4.5K]
The answer to that problem is 800
3 0
4 years ago
Help help help math math
Step2247 [10]

Answer:

15cm^3

Step-by-step explanation:

1^2=1

1*3=3

3*5=15

5 0
2 years ago
Read 2 more answers
Please help with these two questions
S_A_V [24]
To answer question 12, you first need to know the definition of a <em>prism</em> and a<em> pyramid.

</em>A <em>pyramid </em> is a 3-D structure with one base, whose outer faces are made of triangles, and meet at a single point at the top.

A <em>prism</em> is any 3-D shape with a base of any number of sides, another base with the same amount of sides, and faces joining the two together on every side of the bases.

12.
Shape A is a <em>pyramid</em>, because it has one base, and all the faces join together in at one point.

Shape B is a <em>prism</em>, because it has two bases, and faces joining every side of the bases.

Shape C is a <em>prism.</em>

Shape D is a <em>pyramid.

</em>For #13, you have to know the definition of a cube to figure out the math of how many cubes there are.

A cube is a 3-D shape with six sides, all made up of squares of the same size.

The box has a volume of 120 cubic inches, and each cube is 1 inch. Since every side of a cube is equal, a 1-inch cube is one cubic inch.

This means that a box with a volume of 120 cubic inches will fit 120 of the 1 inch cubes.

1 layer of the cubes, in the diagram, is 8 cubes by 3 cubes, or 24 cubes total.

To find the number of layers needed to fill the box, you divide 120 by 24.

120 ÷ 24 = 5

The answer to #13 is 5 layers.
7 0
4 years ago
When 12 is subtracted from 3 times a number, the result is 24. Find the number.
katrin2010 [14]

Answer:

12

Step-by-step explanation:

Ok, first write it as an equation, 3x-12=24. Next, you need to simplify, add 12 to each side, getting 3x=36. Lastly, subtract 3 from each side which gives you x=12

8 0
3 years ago
Other questions:
  • Let f(x) = 3x + 2 and g(x) =7x + 6. Find f ·g and its domain.
    6·1 answer
  • Factor the numerator and denominator and then reduce the fraction:
    8·1 answer
  • Mrs. Jackson earned a 500 bonus for signing a one-year contract to work as a nurse. Her salary is 22 per hour. If her first week
    10·1 answer
  • The product of some negative number and 10 less than three times that number is 8 . find the num
    12·1 answer
  • 4. A home purchased for $120,000 in 2012 is sold for $156,000 in 2015. What is the percent
    15·1 answer
  • If s12 = 744 and a1 = 40 find d
    8·1 answer
  • Pre-Calc, please help! Will give brainliest!
    13·1 answer
  • How many ways can four math books, three history books, three chemistry books, and two computer science books be arranged on a s
    11·1 answer
  • Carlos has saved $19.80. Shaq saved 5/6 of the amount that Carlos saved. Deontae saved 4 times as much as Shaq. What is the tota
    14·1 answer
  • Don's clothing advertised a clothing sale. On the first day, all the clothing was marked 1/10 off. On the second day, unsold ite
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!