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
Alla [95]
2 years ago
13

Write the equation 0.3x 2 + 5x - 7 = 0 in standard form and then choose the value of "b."

Mathematics
2 answers:
spin [16.1K]2 years ago
7 0
The answer is b = 50.

The general form of quadratic equation is
ax² + bx + c = 0.

To write the equation 0.3x²<span> + 5x - 7 = 0 in standard form, you must get rid of decimals. To do that, multiply the equation by 10:
</span>10 * (0.3x²<span> + 5x - 7) = 10 * 0
</span>10 * 0.3x² + 10 * 5x - 10 * 7 = 0
3x² + 50x - 70 = 0

Now compare this equation with the general formula:
ax² + bx  +   c  = 0
3x² + 50x - 70 = 0

Therefore, b = 50.
dimulka [17.4K]2 years ago
7 0

Answer:

B is the answer

Step-by-step explanation:

You might be interested in
Write an expression equivalent to (6x + 4y) – 2y by combining like terms. Enter the numbers in the boxes
raketka [301]

6x +2y

Solution:

Given expression is (6x + 4y) –2y.

To find the equivalent expression for the given expression.

⇒ (6x + 4y) –2y

⇒ 6x + 4y –2y

Combine like terms together.

⇒ 6x + (4y –2y)

⇒ 6x + 2y

6x +2y is equivalent to (6x + 4y) –2y.

Hence, the expression equivalent to (6x + 4y) –2y is 6x + 2y.

5 0
2 years ago
Which property of equality can be used to justify this step?
kompoz [17]

Answer:

C. Addition Property of Equality

Step-by-step explanation:

Addition Property of Equality allows one to add the same quantity to both sides of an equation.

3 0
2 years ago
Read 2 more answers
A cell phone company charges a monthly rate of $55 for unlimited text and data and $0.50 per minute for phone calls. The bill fo
LUCKY_DIMON [66]

Answer:

22 Minutes

Step-by-step explanation:

0.50x22=11.

55+11= 66

:))

4 0
2 years ago
COULD U GUYS HELP! and tell me how u did it
viktelen [127]

Answer:

C

Step-by-step explanation:

In negative smaller numbers are greater

7 0
2 years ago
Read 2 more answers
It takes 40 cents worth of meat to make sandwiches. What is the cost of the meat for 20 sandwiches?
bogdanovich [222]
8 dollars is the answer
7 0
3 years ago
Other questions:
  • Write the doubles plus one fact for 7+7
    5·1 answer
  • Need help on how to do this please thanks
    13·1 answer
  • Solve the following equation, and check your solution. Be sure to show all work.
    6·2 answers
  • How are rotations represented as function
    9·2 answers
  • Solve by substitution <br> X^2= 2y + 10<br> 3x-y = 9
    11·2 answers
  • Please help and thank you
    14·1 answer
  • Find a formula for the polynomial
    11·1 answer
  • DVD cases are sold in packages of 15. Padded mailing envelopes are sold in packets of 4.
    15·1 answer
  • The mean amount of money withdrawn from
    11·2 answers
  • I need helppppppppppppppppppppppppppppppppppppppp
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!