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3 years ago

Solve 47-x^2=-2 plz I will give Brainlyest plz do lol

Mathematics

2 answers:

Rama09 [41]3 years ago

6 0

answer and explanation are in the picture.

Alex777 [14]3 years ago

4 0

47-x^2=-2 the answer is 7

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Identify the initial amount a and the growth factor b in the exponential function.

NikAS [45]

Step-by-step explanation:

An exponential function has the form:

y = a · b^x

Are you sure you copied the problem correctly? Perhaps instead of minus, you meant multiplication:

f(x) = 620 · 7.8^x

If so, then a = 620 and b = 7.8.

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3 years ago

Find the roots. 2x^2 + 4x - 5 =0

xz_007 [3.2K]

Answer:

$-1\pm\dfrac{\sqrt{14}}{2}$

Step-by-step explanation:

$2x^2+4x-5=0$

Using the quadratic formula:

$x=\dfrac{-4\pm \sqrt{16+40}}{4}=-1\pm\dfrac{\sqrt{14}}{2}$

Hope this helps!

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3 years ago

Fill in the blanks to solve 48 x 8. 48 x 8 = 40 eights + 8 eights

kozerog [31]

Question is:

Fill in the blanks to solve $\frac{48}{x} =8$ .

Answer:

$x = 6$

Step-by-step explanation:

Given

$\frac{48}{x} =8$

Required

Solve

Multiply both sides by x

$x * \frac{48}{x} =8*x$

$48 =8*x$

Make x the subject

$x = \frac{48}{8}$

$x = 6$

4 0

3 years ago

I have 2 questions.

frosja888 [35]

I dont know the first answer but the 2nd is dad

6 0

3 years ago

Read 2 more answers

The high school leadership team is having a car wash. They charge $5.50 for large cars and $4.00 for small cars . They had a suc

11Alexandr11 [23.1K]

Answer: 56 large cars and 86 small cars.

Step-by-step explanation:

Let's call:

$l$ : the number of large cars.

$s$ : the number of small cars.

Then, you can set up the following system of equations:

$\left \{ {{l+s=142} \atop {5.50l+4.0s=652.50}} \right.$

You can use the Elimination Method:

- Multiply the first equation by -4.0

- Add both equations.

- Solve for l.

$\left \{ {{-4.0l-4.0s=-568} \atop {5.50l+4.0s=652.50}} \right.\\--------\\1.5l=84.5$

$l$ ≈ $56$

Substitute $l=56$ into one of the original equations and solve for s:

$56+s=142\\s=142-56\\s=86$

3 0

3 years ago