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Eva8 [605]
3 years ago
13

Please help me thank you so much

Mathematics
1 answer:
avanturin [10]3 years ago
3 0
The answer is C.

Explanation:

(First, make sure the to finish solving the quadratic equation)
x^2 + 2x - 16 = 12x
x^2 - 10x - 16 = 0

(a, b and c are the coefficients of x^2, x and the constant respectively)
a = 1, b = -10, c = -16

(We can substitute this into the quadratic equation. +- means + or -)
x = [- b +- sqrt(b^2 - 4ac)]/2a
= [- (-10) +- sqrt(100 + 64)]/2
= [10 +- sqrt(164)]/2

(So C is the answer)
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In a recipe for pizza sauce, the ratio of cans of tomatoes to teaspoons of oregano is 1:6. How many teaspoons of oregano do you
irina1246 [14]

Answer:

48 teaspoons of Oregano

Step-by-step explanation:

Ratio is given as:

Cans of tomatoes : Teaspoons of Oregano

1 : 6

Hence:

1 can of tomatoes = 6 teaspoons of Oregano

8 can of tomatoes = x teaspoons

Cross Multiply

x = 8 × 6 teaspoons

x = 48 teaspoons of Oregano

3 0
3 years ago
The height of a triangle is 3cm less than the length of its base and is area is 27m,find the height
Shkiper50 [21]
Area of a triangle=bh/2

27= x(x-3)/2
27= (x^2-3x)/2
54= x^2-3x
x^2-3x-54=0
(x-9)(x+6)=0

x=9, x=-6.
In this case, x must equal 9 since the base cannot be a negative number.

Final answer: Height=6 m
6 0
3 years ago
Can someone help please!
Tcecarenko [31]

Answer:

7*(1/10)=   the third one

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Anyone know these answers
qaws [65]

Answer:

Step-by-step explanation:

8 0
2 years ago
What is the value of x in the equation 3- 2x = -1.5х?
Vika [28.1K]

Answer:

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

Step-by-step explanation:

<u>Step 1: Define Equation</u>

3 - 2x = -1.5x

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

  1. Add 2x on both sides:                    3 = 0.5x
  2. Divide 0.5 on both sides:               6 = x
  3. Rewrite:                                           x = 6

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in<em> x</em>:                    3 - 2(6) = -1.5(6)
  2. Multiply:                               3 - 12 = -9
  3. Subtract:                              -9 = -9

Here we see that -9 does indeed equal -9.

∴ x = 6 is the solution to the equation.

6 0
2 years ago
Read 2 more answers
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