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1 year ago

Help me! ill give brainiest. this is my finals and im not doing good!

Mathematics

2 answers:

vredina [299]1 year ago

8 0

1 3/9 is the answer your looking for

Alex73 [517]1 year ago

4 0

Answer:

question 1 = 1 3/9 question 2 = 8/9 question 3 = 11/22

Step-by-step explanation:

You might be interested in

What is the interval notation for x+1>34?

vodka [1.7K]

Explanation:

First you subtract by -1 both sides of an equation.

$x+1-1=34-1$

Then, simplify the number.

34-1=33

x>33

Or interval notation 33,∞

Final answer: → x>33 and 33,∞

Hope this helps!

Thanks!

8 0

2 years ago

Which number line shows the solution to the inequality -2(3x-1)<8

Zigmanuir [339]

Answer:

$x > -1$

Step-by-step explanation:

Given

$-2(3x - 1) < 8$

Required

Show on a number line

$-2(3x - 1) < 8$

Divide through by -2

$\frac{-2(3x - 1)}{-2} < \frac{8}{-2}$

$3x - 1 > -4$

Add 1 to both sides

$3x -1 + 1 > -4 + 1$

$3x > -3$

Divide through by 3

$x > -1$

See Attachment for number line

6 0

3 years ago

A cylinder shaped can needs to be constructed to hold 400 cubic centimeters of soup. The material for the sides of the can costs

LenKa [72]

Answer:

The dimensions of the can that will minimize the cost are a Radius of 3.17cm and a Height of 12.67cm.

Step-by-step explanation:

Volume of the Cylinder=400 cm³

Volume of a Cylinder=πr²h

Therefore: πr²h=400

$h=\frac{400}{\pi r^2}$

Total Surface Area of a Cylinder=2πr²+2πrh

Cost of the materials for the Top and Bottom=0.06 cents per square centimeter

Cost of the materials for the sides=0.03 cents per square centimeter

Cost of the Cylinder=0.06(2πr²)+0.03(2πrh)

C=0.12πr²+0.06πrh

Recall: $h=\frac{400}{\pi r^2}$

Therefore:

$C(r)=0.12\pi r^2+0.06 \pi r(\frac{400}{\pi r^2})$

$C(r)=0.12\pi r^2+\frac{24}{r}$

$C(r)=\frac{0.12\pi r^3+24}{r}$

The minimum cost occurs when the derivative of the Cost =0.

$C^{'}(r)=\frac{6\pi r^3-600}{25r^2}$

$6\pi r^3-600=0$

$6\pi r^3=600$

$\pi r^3=100$

$r^3=\frac{100}{\pi}$

$r^3=31.83$

r=3.17 cm

Recall that:

$h=\frac{400}{\pi r^2}$

$h=\frac{400}{\pi *3.17^2}$

h=12.67cm

The dimensions of the can that will minimize the cost are a Radius of 3.17cm and a Height of 12.67cm.

3 0

3 years ago

Recording studio sometimes has soft panels on the walls. How might these panels improve the quality of the recording?

GalinKa [24]

C will be the correct answer

5 0

3 years ago

Select all of the reflections that will carry the rectangle onto itself

agasfer [191]

Answer:

B and E

Step-by-step explanation:

5 0

2 years ago