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3 years ago

Can you please explain for me?

Mathematics

1 answer:

iogann1982 [59]3 years ago

6 0

Hexagon (try it)

average speed
add the speeds together and average
4 speeds
(45+37+34+40)/4=156/4=39
avearge speed=39mph

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Robert has 17 lb of grain he would like to put into sacks. Each sack will hold three pounds. How many sacks will he need?

satela [25.4K]

Answer:

Step-by-step explanation:

17/3=5.67

since you can't have 0.67 sack. you just round it up to 6

5 0

3 years ago

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Find area and perimeter of shaded regions below

aleksandrvk [35]

Answer:

Step-by-step explanation:

ABCD is a square.

side = 24 cm

Area of square = side * side = 24 * 24 = 576 cm²

Semicircle:

d = 24 cm

r = 24/2 = 12 cm

Area of semi circle =πr²

= 3.14 * 12 * 12

= 452.16 cm²

Area of shaded region = area of square - area of semicircle + area of semicircle

= 576 - 452.16 + 452.16

= 576 cm²

Perimeter:

Circumference of semicircle = 2πr

= 2 * 3.14 * 12

= 75.36

Perimeter = 2* circumference of semicircle + 24 + 24

= 2 * 75.36 + 24 + 24

= 150.72 + 24 + 24

= 198.72 cm

6 0

3 years ago

What is the solution to the system of equations? 6x+2y=6 7x+3y=5

Stells [14]

The answer is (2,-3)

4 0

3 years ago

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I need help with this question

Black_prince [1.1K]

Answer:

Step-by-step explanation:

The slope-intercept form is found by solving that equation for y.

If $y-3=\frac{1}{2}(x-1)$ then

$y-3=\frac{1}{2}x-\frac{1}{2}$ and

$y=\frac{1}{2}x-\frac{1}{2}+3$ and

$y=\frac{1}{2}x-\frac{1}{2}+\frac{6}{2}$ so

$y=\frac{1}{2}x+\frac{5}{2}$

The answer you have chosen is the correct one! Good job!

6 0

3 years ago

Solve the inequality and express your answer in interval notation x^2+8x+5 <0

irakobra [83]

The interval notation is $(-\sqrt{11}-4, \sqrt{11}-4)$

Explanation:

The inequality is $x^{2}+8 x+5$

Let us complete the square, we get,

$x^{2}+8 x+5+4^{2}-4^{2}$

Simplifying, we have,

$(x+4)^{2}+5-4^{2}$

$(x+4)^{2}-11$

Adding both sides of the equation by 11, we get,

$(x+4)^{2}$

Since, we know that for $u^{n}$ , if n is even then $-\sqrt[n]{a}$

Thus, writing the above expression in this form, we get,

$-\sqrt{11}$

Also, if $a$ then $a$ and $u$

Then ,we have,

$-\sqrt{11}$ and $x+4$

Solving the inequalities, we get,

$-\sqrt{11}\ \ \ \ \ \$ and $x+4$

Merging the intervals, we have,

$-\sqrt{11}-4$

Hence, writing the solution in interval notation, we have,

$(-\sqrt{11}-4, \sqrt{11}-4)$

Therefore, the answer is $(-\sqrt{11}-4, \sqrt{11}-4)$

7 0

3 years ago