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
sammy [17]
3 years ago
11

What is the answer to this problem -2x – 4 < 3x + 21

Mathematics
1 answer:
horsena [70]3 years ago
6 0

Start with

-2x-4 < 3x+21

Add 2x to both sides:

-4 < 5x+21

Subtract 21 from both sides:

-25 < 5x

Divide both sides by 5. Since it is positive, we don't have to change the inequality sign:

-5 < x

So, the answer is x > -5


You might be interested in
Help me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ElenaW [278]
So 20% is 1/5 as a percent.

So 1/5 multiplied by 5 equals 5/5, or 1.

So if 1/5 = 6, then 6 multiplied by 5, or 30, must equal 5/5, or 1.

So the total number of dolls in Amyia's doll collection is 30.
7 0
3 years ago
A parabola has the equation –5x2 + 30x – y – 34 = 0. Which equation is that of the parabola in vertex form?
frozen [14]
We can complete the square to get a standard form quadratic into vertex form. First, add Y and 34 to the right side of the equation. You’ll get -5x^2 + 30x = y + 34.
Next, you need to factor out a -5 from the left side, so you’ll get -5(x^2 -6x) = y + 34. Then, complete the square on the left. You’ll get -5(x-3)^2 = y - 11. Finally, add 11. The answer is y = -5(x-3)^2 + 11
6 0
3 years ago
Find the volume of a pyramid with a square base, where the side length of the base is
MatroZZZ [7]

Answer:

1529.4 m^3

Step-by-step explanation:

We will use the formula V = 1/3*h*B for the volume of the pyramid, where V is volume, h is height, and B is are of the base.

First, since we know h and are looking for V, we need B. To find this, since it has a square base, we multiply b, the base length, by itself. 15.3m * 15.3m = 234.09m^2.

Next, we plug into the formula.

V = 1/3*19.6m*234.09m^2

And simplify:

V= 1/3 * 4,588.164m^3

V= 15.29.3879....

Last, round to the tenth

1529.4 m^3

5 0
3 years ago
On an algebra test , the highest grade was 50 points higher than the lowest the sum of the two grades was 122 find the lowest gr
KATRIN_1 [288]

Answer:

Highest grade: 86

Lowest grade: 36

Step-by-step explanation:

Let the highest grade be h, lowest grade be l.

h = 50 + l  \\  \\ h + l = 122 \\ h = 122 - l \\  \\

Therefore,

122 - l \:  = 50 + l \\ 2l \:  = 72 \\ l = 36 \\  \\ h = 36 + 50 = 86

6 0
3 years ago
Please please help me please I really need help please
Ratling [72]

Answer:

A. 8

Step-by-step explanation:

sqrt{64} is 8 (8*8)

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is 0.275 0.20 0.572 and 0.725 greatest to least
    10·1 answer
  • What is 52+2x<br> x=5<br><br> a.prime number<br> b.composite number<br> c.whole number
    9·2 answers
  • Lola needs to sign 96 invitations. Using a stopwatch that measures time to tenths of a second, it takes Lola 5.3 seconds to sign
    7·1 answer
  • What is the value of G-3=9
    15·2 answers
  • Help help help help help
    14·2 answers
  • Identify the constant of<br> proportionality (k)<br> 8Y = 16x<br> k=
    13·1 answer
  • You buy books for 64 cents each, you plan to sell them for 75 cents each. You're left with 100 unsold books, and you lost $12. H
    5·1 answer
  • Answer quickly pls ill mark brainliest
    8·2 answers
  • In the circle below, Chords PQ and RS are parallel.
    12·2 answers
  • Find all the solutions
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!