3 years ago

Please help!! How do I solve this?

Mathematics

1 answer:

jekas [21]3 years ago

6 0

Angle 1 and angle BCA are "vertical" angles. (Review the definition of vertical angles. ) Vertical angles are equal.

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9.042 divide 2.1 equqls what

riadik2000 [5.3K]

Your answer is 9.042÷2.1=4.305

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3 years ago

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The volume of one can is 300 cubic centimeters. What is the radius of this can? Round to the nearest hundredth.

Sav [38]

Volume of cylinder

$\pi {r}^{2} h$

Volume of the can = 300

$300 = \pi {r}^{2} h$

$300 = \frac{22}{7} {r}^{2} h$

$300 \times \frac{7}{22} = {r}^{2} h$

$150 \times \frac{7}{11} = {r}^{2} h$

$95.45 = { r}^{2} h$

$\frac{95.45}{h} = {r}^{2}$

$\sqrt{ \frac{95.45}{h} } = r$

$\frac{ \sqrt{95.45} }{ \sqrt{h} } = r$

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3 years ago

Select all that apply. If a scale drawing has a scale of 1 centimeter to 4 meters, which measurements are correct?

natima [27]

Answer: A drawing length of 6 centimeters is 24 meters on the actual object

Step-by-step explanation:

1 cm = 4 m

6 cm x 4 m = 24 m

24 m/ 4 m = 6 cm

6 0

4 years ago

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Solve the inequality.<br> r+ 4 - 2r - 14) > 0

makkiz [27]

Answer:

Step-by-step explanation:

Here you go mate

PEMDAS

Parenthesis

Exponents

Multiplication

DIvision

Addition

Subtraction

Step 1

(r+4-2r-14)>0 equation/Question

Step 2

(r+4-2r-14)>0 Simplify to remove parenthesis

-r-10>0

Step 3

-r-10>0 Add 10 to sides

-r-10+10>0+10

-r>10

Step 4

-r/-1>10/-1 cross multiply (which also means divide)

answer

r<-10

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3 years ago

What are the center and radius of the circle defined by the equation x^2 + y^2 -6x + 8y + 21=0

NeTakaya

Answer:

Step-by-step explanation:

(x²-6x)+(y²+8y)=-21

(x²-6x+9)+(y²+8y+16)=-21+9+16

(x-3)²+(y+4)²=4

center=(3,-4),radius=√4=2

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3 years ago