All categories

3 years ago

Solve the equation using the quadratic formula. 262 – 3b+85=-5

Mathematics

1 answer:

liberstina [14]3 years ago

8 0

Answer:

b= 352/3

or b= 117.33

Step-by-step explanation:

262-3x+85=-5

-3x+(262+85)=-5

simplify the arithmetic

-3x+347=-5

Group all constants on the right side of the equation

-3x+347=-5

Subtract from both sides:

-3x+347-347=-5-347

Simplify the arithmetic:

-3x=-5-347

-3x=-352

isolate the x

-3x=-352

Divide both sides by -3

-3x/-3}=-352/-3}

Cancel out the negatives

3x/3}=-352/-3

Simplify the fraction

x= -352/-3

Cancel out the negatives

x=352/3

You might be interested in

A company manufactures a large number of rods. The lengths of the rods are normally distributed with a mean length of 4.4 inches

Elza [17]

Answer:

0.78814

Step-by-step explanation:

We solve using z score

z = (x-μ)/σ, where

x is the raw score = 4.0 inches

μ is the population mean = 4.4 inches

σ is the population standard deviation = 0.5 inches

z = 4.0 - 4.4/0.5

z = -0.8

Probability value from Z-Table:

P(x<4.0) = 0.21186

P(x>4.0) = 1 - P(x<4.0)

= 1 - 2.1186

= 0.78814

The probability that the rod you chose will be greater than 4.0 inches is 0.78814.

4 0

3 years ago

Find the surface area of the rectangular prism. 4 km 5 km 2 km

Reptile [31]

76 is the answer, I put the answer in the photo below also!

6 0

2 years ago

PLEASE I NEED HELP

drek231 [11]

Answer:

$4x {}^{2} + \frac{3}{2} x - 7$

Step-by-step explanation:

Add theses functions

$\frac{x}{2} - 3 + 4 {x}^{2} + x - 4 \\ 4 {x}^{2} + \frac{3}{2} x - 7$

7 0

3 years ago

Simplify: StartRoot StartFraction 27 x Superscript 12 Baseline Over 300 x Superscript 8 Baseline EndFraction EndRoot StartFracti

ale4655 [162]

The solution of the expression is $\rm \dfrac{9\times x^4}{100}$ .

Given that

Equation; $\dfrac{27x^{12}}{300x^8}$

We have to simplify the equation.

According to the question

To simplify the equation follow all the steps given below.

Equation; $\sqrt{\dfrac{27x^{12}}{300x^8}}$

Then,

$= {\dfrac{27x^{12}}{300x^8}}\\\\ = \dfrac{3\times 3\times 3 \times x^{8} \times x^{4}}{3 \times 100\times x^8}}\\\\=\dfrac{9\times x^4}{100}$

Hence, the required expression is $\rm \dfrac{9\times x^4}{100}$ .

To know more about Expression click the link given below.

brainly.com/question/16179118

8 0

3 years ago

A spinner is shown at the fight

vagabundo [1.1K]

Answer: .3, .1, .5, .6, .5

Step-by-step explanation:

$\large \dfrac{\text{quantity of shaded spaces}}{\text{Total spaces}}=\dfrac{3}{10}=\large\boxed{.3}\\\\\\\dfrac{\text{quantity of 5s}}{\text{Total spaces}}=\dfrac{1}{10}=\large\boxed{.1}\\\\\\\dfrac{\text{quantity of even numbers}}{\text{Total spaces}}=\dfrac{5}{10}=\large\boxed{.5}\\\\\\\dfrac{\text{Total - white spaces}}{\text{Total spaces}}=\dfrac{10-4}{10}=\large\boxed{.6}\\\\\\\dfrac{\text{white spaces + number of 7s}}{\text{Total spaces}}=\dfrac{4+1}{10}=\large\boxed{.5}\\$

7 0

3 years ago