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Serga [27]
2 years ago
9

IN A CRISIS RN SO COULD SOMEONE PLEASE HELP ME?

Mathematics
2 answers:
Lana71 [14]2 years ago
7 0

Answer:

D

Step-by-step explanation:

sesenic [268]2 years ago
5 0

Answer:Use math Papa

Step-by-step explanation:

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We want the ratio of orange seashells to pink seashells to be 3:7 we should use 40 seashells how many orange seashells should we
MrMuchimi
12 orange seashells should be painted

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2 years ago
Select all the correct answers. the square of a number is 3 less than four times the number. which values could be the number?
Nimfa-mama [501]

The given expression "the square of a number is 3 less than four times the number" is represented as x² = 3 - 4x and the values of number could be: x1= 0.645 , x2= -4.645

In mathematics, when we refer "square of a number" we mean that the exponent of that number is 2. So we express it mathematically as:

x²

When we express "3 less than" of a number we mean that the number 3 is subtracting that number. So we express it mathematically as: 3 -

x² = 3 -

When we express "four times the number" we mean that the number is exactly 4 times greater than a number or that it contains it 4 times. So we express it mathematically as: 4x

x² = 3 - 4x

Organizing the values, we have a quadratic equation: x² + 4x – 3 = 0

Where:

  • a=  1
  • b= 4
  • c= -3

Solving the quadratic question we get the values for the (x) number

x= {- b ± √ [b² - (4* a*c)]} / (2 *a)

x= {- 4 ± √ [4² - (4* 1*-3)]} / (2 * 1)

x= {- 4 ± √ (16 + 12)} / 2

x= {- 4± √ 28} / 2

x= (- 4 ± 5.29 ) / 2

x1= (- 4 + 5.29 ) / 2

x1= (1,29) / 2

x1= 0.645

x2= (- 4 - 5.29 ) / 2

x2= (9.29) / 2

x2= -4.645

We can check the values, replacing them into the equation:

(x1)² = 3 - 4(x1)

(0.645)² = 3 - 4*(0.645)

0.42 = 0.42

(x2)² = 3 - 4(x2)

(-4.645)² = 3 - 4*(-4.645)

21.58 = 21.58

<h3>What is a quadratic equation?</h3>

It is an algebraic equation where the polynomial formed has three terms, one variable has an exponent 2, another in which the variable has exponent 1 and the last term without any variable. Its standard form is:

ax²+ bx + c = 0

Learn more about quadratic equation at: brainly.com/question/25841119 and brainly.com/question/7784687

#SPJ4

3 0
1 year ago
In math what is the answer to this question. -27•7/9=
agasfer [191]
-27 \times \frac{7}{9} = -3\times \frac{7}{1} = -3\times 7 = \boxed{-21}

Your answer is -21
6 0
3 years ago
Raymond has taken a position as the navigator on a speed boat racing team. The team entered a race that starts at Daytona Beach,
erik [133]
Using the rules of cosines, the <span>measure of the turn between the second and third legs of the race</span> is given by

\cos^{-1}\left( \frac{180^2+160^2-140^2}{2\times180\times160} \right)=\cos^{-1}\left( \frac{32,400+26,600-19,600}{57,600} \right) \\  \\ =\cos^{-1}\left( \frac{39,400}{57,600} \right)=\cos^{-1}(0.6840)\approx47^o
4 0
3 years ago
Read 2 more answers
A student says that the x-intercept of the graph of × + 2y =5 is the point (0,5). Is the student correct or incorrect? Explain y
ivanzaharov [21]

The student is incorrect, the actual x-intercept is (5, 0).

<h3>Is the student correct or incorrect?</h3>

Here we have the equation:

x + 2y = 5

The student says that the x-intercept is the point (0, 5).

So if you look at the point you already can see that the student is incorrect, this is because the x-intercept always must have a y-value of 0. (the graph only intercepts the x-axis when y = 0).

So the point (0, 5) can't be an x-intercept.

For the given function:

x +2y = 5

The x-intercept is given by:

x + 2*0 = 5

x = 5

So it is (5 , 0).

If you want to learn more about x-intercepts:

brainly.com/question/3951754

#SPJ1

5 0
2 years ago
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