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3 years ago

Which expressions are equivalent to this expression?

Mathematics

2 answers:

Deffense [45]3 years ago

6 0

4x+4

factor

4(x+1)

2(2x+2)

x+3x+42x+2x+1+3

Choices B,C,D

Snezhnost [94]3 years ago

5 0

2x + 1 + 2x + 3

2(2x + 2)

These are for sure answers

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I need help please <br> (Geometry)

oee [108]

The surface area formula for any sphere is 4(pi)(radius)^2

The radius is half of the diameter.

18.6 / 2 = 9.3

So, plug into the formula and solve.

4(3.14)(9.3)^2 = 1086.3 mm^2

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4 years ago

PLEASE HELP!

igomit [66]

Answer:

Part 1. 325 - (135 + 89) = c

Part 2. ≤ 101

Step-by-step explanation:

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3 years ago

Find the surface area of the cone with a diameter of centimeters and a slant height of millimeters

defon

Answer:

The first step in finding the surface area of a cone is to measure the radius of the circle part of. Therefore, the total surface area of the cone is 83.17cm2.

Step-by-step explanation:

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3 years ago

The area of triangle ABC is 3√2 square inches. Find the measure of the acute angle, A, if b = 9 meters and c = 2 meters.

taurus [48]

Answer:

$A\approx 28^{\circ}$

Step-by-step explanation:

Please find the attachment.

We have been given that area of triangle ABC is 3√2 square inches.

$\text{Area}=\frac{1}{2}\text{Base}\times \text{height}$

We know that area of triangle an be found using trigonometry as:

$\text{Area}=\frac{1}{2}\times c\times h$

$\text{sin}(A)=\frac{h}{9}\\h=9\cdot \text{sin}(A)$

$3\sqrt{2}=\frac{1}{2}\times 2\times 9\cdot \text{sin}(A)$

$3\sqrt{2}=9\cdot \text{sin}(A)$

$9\cdot \text{sin}(A)=3\sqrt{2}$

$\text{sin}(A)=\frac{3\sqrt{2}}{9}$

$\text{sin}(A)=\frac{\sqrt{2}}{3}$

Now, we will use inverse sine to find the value of angle A as:

$A=\text{sin}^{-1}(\frac{\sqrt{2}}{3})$

$A=28.1255057^{\circ}$

$A\approx 28^{\circ}$

Therefore, the measure of angle A is approximately 28 degrees.

3 0

3 years ago

Meagan wants to make 2 1/3 batches of muffins. The recipe calls for 1 1/2 cups of sugar per batch. How much sugar will she need?

wlad13 [49]

Answer:

1 5/9 OR 14/9

Step-by-step explanation:

First we need to find out what the question is asking. How much sugar will she need if she wants to make 2 1/3 batches?

Next, we must see if we need to divide, subtract, multiply, or add. We need to divide.

2 1/3 divided by 1 1/2

Convert mixed numbers to improper fractions: 2 1/3=7/3 1 1/3=3/2

Apply the fraction rule a/b/c/d=a*d/b*c: 7*2/3*3

14/9 OR 1 5/9

3 0

3 years ago