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Hitman42 [59]
3 years ago
11

Which statement about y = x2 + 7x - 30 is true?

Mathematics
1 answer:
Lady_Fox [76]3 years ago
4 0

Answer:

D. The zeros are 3 and -10, because y = (x - 3)(x + 10).

Step-by-step explanation:

y=x^2+7x-30

0=x^2+7x-30

0=(x+10)(x-3)

Therefore, D is correct by the Zero Product Property

You might be interested in
What is the solution to -4x+12&lt;36?<br><br> A- x&lt;-6<br> B- x&gt;-6<br> C- x&gt;6<br> D-x&lt;6
Karolina [17]

Answer:

B- x > -6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

-4x + 12 < 36

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Subtraction Property of Equality] Subtract 12 on both sides:                       -4x < 24
  2. [Division Property of Equality] Divide -4 on both sides:                                x > -6
3 0
3 years ago
A used book store will trade 2 of its books for 3 of yours. If Val brings in 18 books to trade, how many books can she get from
Shalnov [3]
You need to set it up as a fraction and make the fractions equal each other. 
2/3 (2 of their books for 3 of yours)
x/18 (x amount of their books for 18 of yours)
(2/3)=(x/18)
multiply both sides by 18 
and you get 
36/3 which reduces to 12

so your answer is 12
5 0
3 years ago
Read 2 more answers
I need help with this ​
viva [34]

Answer:

correct

Step-by-step explanation:

6 0
3 years ago
How do you know if an equation has no solution or infinite solutions
shutvik [7]

Answer:

If an equation has no solution, then it means it can't be solved.

If an equation has infinite solutions, it means that the answers are too large to be defined.

Step-by-step explanation:

An equation has no solution if for instance there is an error in that equation.

An equation has infinite solutions or undefined answers if for instance a number is divided by zero.

5 0
3 years ago
Read 2 more answers
Bayside High School Orchestra performed two concerts to raise money for a field trip. Tickets were $8 for
r-ruslan [8.4K]

Answer:

Adults = 167

Students = 256

Teachers = 85

Step-by-step explanation:

Let:

S represents Students

A represents Adults

T represents Teachers

From the instructions in the question, we have that:

A + S = 423 -- (1)

8A + 5S = 2616 -- (2)

Make A the subject in (1)

A + S = 423

A = 423 - S

Substitute 423 - S for A in (2)

8A + 5S = 2616

8(423 - S) + 5S = 2616

Open Bracket

3384 - 8S + 5S = 2616

3384 -3S = 2616

Solve for S

-3S = 2616 - 3384

-3S = -768

S = -768/-3

S = 256

Recall that A = 423 - S

A = 423 - 256

A = 167

From the question, we understand that;

T = \frac{1}{3}S

T = \frac{1}{3} * 256

T = 85.333

T = 85 <em>(Approximated)</em>

4 0
3 years ago
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