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4 years ago

I need help pleassseee

Mathematics

2 answers:

IrinaVladis [17]4 years ago

6 0

Answer:

$6^{2} - 3^{2} \pi$ = area of the black 7.725666

$x^{2} - r^{2} \pi$

area of square - area of circle

the diameter of the circle is 6 and half that is the radius = 3

Lubov Fominskaja [6]4 years ago

3 0

Answer:

The length of the radius is 3cm.

Step-by-step explanation:

Given that a circle is inscribed in a square. The side of the circle touches the side of the square which is the diameter. So the diameter of circle is 6cm, in order to find it's radius, you have to duvide it by 2 :

$radius = diameter \div 2$

$radius = 6 \div 2$

$radius = 3cm$

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• Write the equation of the line that passes through the points (-7,0) and(-3,-9). Put your answer in fully reduced point-slope

coldgirl [10]

We want to calculate the line that passes through the points (-7,0) and (-3,-9). Recall that the equation of a line is

$y=mx+b$

where m is the slope and b is the y intercept. We can calculate first the slope and then find the value of b. To do so, recall that given points (a,b) and (c,d) the slope of the line that passes through them is given by the formula

$m=\frac{(d\text{ -b)}}{(c\text{ -a)}}=\frac{b\text{ -d}}{a\text{ -c}}$

so by taking a=-7, b=0, c=-3 and d=-9 we get

$m=\frac{0\text{ - (-9)}}{\text{ -7 -( -3)}}=\frac{9}{\text{ -4}}=\text{ -}\frac{9}{4}$

so our equation becomes

$y=\text{ -}\frac{9}{4}x+b$

so know we want this line to pass through the point (-7,0), so whenever x= -7 then y=0 so we have the equation

$0=\text{ -}\frac{9}{4}(\text{ -7)+b}$

or equivalently

$0=\frac{63}{4}+b$

so if we subtract 63/4 on both sides, we get

$b=\text{ -}\frac{63}{4}$

so our equation would be

$y=\text{ -}\frac{9}{4}x\text{ -}\frac{63}{4}$

3 0

1 year ago

F(x) = 2x² + x at (-1, 1)

lord [1]

Answer:

$f(x) = 2 {x}^{2} + x \\ at \: that \: point \: given \: \: x = - 1 \\ f(x) = 2 {( - 1)}^{2} + ( - 1) \\ f(x) = 2 - 1 \\ f(x) = 1$

4 0

3 years ago

For the month of June in a certain city, 41% of the days are cloudy. Also in the month of June in the same city, 21% of the

BaLLatris [955]

Answer:

0.5122 or 51.22%

Step-by-step explanation:

In a certain city, in June Probability of cloudy days = P(cloudy) = 0.41

Probability of cloudy and rainy = P(cloudy and rainy) = 0.21

Probability of rainy if we already know it is cloudy = $\frac{\text{[P(cloud and rainy)]}}{[P(cloud)]}$

= $\frac{0.21}{0.41}$ = 0.512195122 ≈ 0.5122

Therefore, the probability that a randomly selected day in June will be rainy if it is cloudy is 0.5122 or 51.22%

7 0

4 years ago

6 - 4 2/3<br>6 - 4 2/3

marusya05 [52]

Answer:

you said it two times 6-42/3 that what you means if so it is 1 1/3

Step-by-step explanation:

7 0

3 years ago

Camila owns a food truck that sells tacos and burritos. She only has enough supplies to make 120 tacos or burritos. She sells ea

LekaFEV [45]

The inequalities is given by x + y ≤ 120, 4.75x + 7.5y > 690 and y ≥ 80. A possible solution is selling 10 tacos and 100 burritos

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Independent variables represent function inputs that do not depend on other values, while dependent variables represent function outputs that depends on other values.

Let x represent the number of tacos and y represent the number of burritos sold, hence:

x + y ≤ 120 (1)

Also:

4.75x + 7.5y > 690 (2)

and:

y ≥ 80 (3)

The inequalities is given by x + y ≤ 120, 4.75x + 7.5y > 690 and y ≥ 80. A possible solution is selling 10 tacos and 100 burritos

Find out more on equation at: brainly.com/question/2972832

#SPJ1

4 0

2 years ago