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3 years ago

What is 4.25 round to one decimal place

2 answers:

8 0

Rounded to one decimal place means to round to the nearest tenth (i.e. to the nearest 0.1)

4.25 (rounded to the nearest tenth) = <u><em>4.3</em></u>

strojnjashka [21]3 years ago

7 0

The answer is 4.3 because you round up since 5 is in the hundredths place

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Is 3/7 rational or irrational

Semenov [28]

A rational number is one that can be expressed as a fraction....3/7 is a fraction...therefore, 3/7 is rational

5 0

3 years ago

A farmer is planting a field with 28 rows of vegetables, and each row requires 6.491 gallons of water per day. How many gallons

Andreyy89

28 rows times 6.491 gallons/day = 181.75 gallons/day.

That's per row. Each of the 10 plants in each row would receive

6.491 gallons water per row

------------------------------------------- = 0.649 gallon/plant

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3 years ago

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Which is the addend and the sum?

snow_tiger [21]

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3 years ago

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Use vectors to find the interior angles of the triangle with the given vertices. (Enter your answers as a comma-separated list.

SOVA2 [1]

Answer:

23.92°, 78.503°, and 77.577°

Step-by-step explanation:

The coordinates of the vertices of the triangle are;

X(-3, -5), Y(2, 6), Z(6, 3)

The vectors are;

z = $\left \langle 2 - (-3), 6 - (-5) \right \rangle$ = $\left \langle 5, 11 \right \rangle$

y = $\left \langle 6 - (-3), 3 - (-5) \right \rangle$ = $\left \langle 9, 8 \right \rangle$

x = $\left \langle 2 - 6, 6 - 3 \right \rangle$ = $\left \langle -4, 3 \right \rangle$

$cos (\alpha ) = \dfrac{z \cdot y}{\left | z \right | \times \left | y \right |}$

Therefore, we get;

$cos (\alpha ) = \dfrac{5 \times 9 + 11 \times 8 }{\left | \sqrt{5^2 + 11^2} \right | \times \left | \sqrt{9^2 + 8^2} \right |} = \dfrac{133}{\sqrt{146} \times \sqrt{145} } \approx 0.91409$

α = arccos(0.91490) ≈ 23.92°

γ = The angle between -y and x

-y = $\left \langle -9, -8 \right \rangle$

We get;

$cos (\gamma) = \dfrac{-y \cdot x}{\left | -y \right | \times \left | x \right |}$

Therefore;

$cos (\gamma) = \dfrac{-9 \times -4 + -8 \times 3 }{\left | \sqrt{(-9)^2 + (-8)^2} \right | \times \left | \sqrt{(-4)^2 + 3^2} \right |} = \dfrac{12}{\sqrt{145} \times \sqrt{25} } \approx 0.199309$