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3 years ago

HELP! The first one please! Thank you!!

Mathematics

1 answer:

Wewaii [24]3 years ago

3 0

I think the first one is 65

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Mkey [24]

Answer:

alright, let's talk

Step-by-step explanation:

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3 years ago

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A certain television 8s advertised as a 34- inch Tv (The diaginal length). If the width of the TV is 30 inches, how many inches

MArishka [77]

Answer:

Tv is 16 inches tall

Step-by-step explanation:

a²+b²=c²

30²+b²=34²

b²=1156-900

√b²=√256

b=16

5 0

3 years ago

Special Triangles

Ugo [173]

Answer:

see explanation

Step-by-step explanation:

Using the cosine and tangent trigonometric ratios and the exact values

cos30° = $\frac{\sqrt{3} }{2}$ and tan30° = $\frac{1}{\sqrt{3} }$ , then

cos30° = $\frac{adjacent}{hypotenuse}$ = $\frac{6}{m}$ = $\frac{\sqrt{3} }{2}$ ( cross- multiply )

$\sqrt{3}$ × m = 12 ( divide both sides by $\sqrt{3}$ )

m = $\frac{12}{\sqrt{3} }$ ← rationalise by multiplying numerator/ denominator by $\sqrt{3}$ )

m = $\frac{12}{\sqrt{3} }$ × $\frac{\sqrt{3} }{\sqrt{3} }$ = $\frac{12\sqrt{3} }{3}$ = 4 $\sqrt{3}$

-------------------------------------------------------------------------------

tan30° = $\frac{opposite}{adjacent}$ = $\frac{n}{6}$ = $\frac{1}{\sqrt{3} }$ ( cross- multiply )

$\sqrt{3}$ × n = 6 ( divide both sides by $\sqrt{3}$ )

n = $\frac{6}{\sqrt{3} }$ ← rationalise the denominator

n = $\frac{6}{\sqrt{3} }$ × $\frac{\sqrt{3} }{\sqrt{3} }$ = $\frac{6\sqrt{3} }{3}$ = 2 $\sqrt{3}$

-----------------------------------------------------------------------------------

7 0

3 years ago

10 quarts converted to cups

monitta

Answer:

40 cups

Step-by-step explanation:

We need to convert from quarts to cups using a conversion factor

We know that 1 quart = 4 cups

10 quarts * 4 cups

----------- = 40 cups

1 quart

4 0

3 years ago

What is the midpoint of (-2, -1) and (0, 9)

Fiesta28 [93]

Answer:

(-1,4)

Step-by-step explanation:

For x the midpoint between -2 and 0 is -1

for y the midpoint between -1 and 9 is 4

6 0

2 years ago

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