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Aleksandr-060686 [28]
1 year ago
8

Solve - 3x^2 + 2x + 4 = -x- 3 by writing a linear-quadratic system and solving using the intersection feature of a graphing calc

ulator,The graphing calculator shows the curve and line intersect at
Mathematics
1 answer:
Butoxors [25]1 year ago
5 0

Given,

-3x^2+2x+4=-x-3-3x^2+3x+7=0

Solving the above equation,

x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}

Here, a=-3, b=3 and c=7

Therefore,

x=\frac{-3\pm\sqrt[]{9+84}}{-6}x=\frac{-3+\sqrt[]{93}}{-6}\text{ or }x=\frac{-3-\sqrt[]{93}}{-6}\text{ }

Therefore,

x=-1.11\text{ or }x=2.11

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How do I compare numerical expressions without calculating them
jenyasd209 [6]
Try to calculate them in your head and if that doesn't help use a calculator. I hope this helps
6 0
3 years ago
Jana earns $25 per week for mowing the lawn and deposits the money into her savings account. The amount of money in Jana’s accou
Tems11 [23]

Answer: y-int = That means the amount of money in Jana's account before she began mowing lawns.

Step-by-step explanation:

The y-intercept represents the initial money that Jana has in his account. Step-by-step explanation: Given the equation of line is . Also, Jana earns $ per week. And is the number of weeks she has been working. If we plug week in the equation . It will give us the y-intercept. That means the amount of money in Jana's account before she began mowing lawns. The y-intercept represents the initial money that Jana has in his account.  

5 0
2 years ago
What is the value of an annuity due at the end of 15 years of quarterly deposits of $2,000.00 with terms of 8 percent compounded
aleksley [76]
That's a hard question/
3 0
3 years ago
What percent of 72 is 9? 1/8% 1 1/4% 12 1/2% 125%
USPshnik [31]

Answer:

12\dfrac 12\%

Step by step explanation:

\text{Let it be}~ x\%,\\\\~~~~~72 \cdot x \% = 9\\\\\\\implies 72\cdot \dfrac{x}{100} = 9\\\\\\\implies x = \dfrac{9 \times 100}{72}\\\\\\\implies x = \dfrac{100}{8}\\\\\\\implies x = \dfrac{25}2\\\\\\\implies x = 12 \dfrac 12\\\\\\\text{Hence 9 is}~ 12\dfrac 12\% ~ \text{of}~ 72

4 0
2 years ago
Please help asap it will help very much
qwelly [4]

Answer:

180 cm²

Step-by-step explanation:

From inspection of the diagram, the surface area is made up of the area of 4 congruent triangles and the area of one square.

Area of a square = x² (where x is the length of one side)

⇒ area of the square = 6² = 36 cm²

Area of a triangle = 1/2 x base x height

⇒ area of one triangle = 1/2 x 6 x 12 = 36 cm²

Total surface area = 4 x area of one triangle + area of the square

                               = 4 x 36 + 36

                               = 144 + 36

                               = 180 cm²

5 0
2 years ago
Read 2 more answers
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