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3 years ago

By writing each number correct to 1 significant figure, estimate the value of

Mathematics

1 answer:

DedPeter [7]3 years ago

4 0

Answer:

37.8 x 13.2 =4988.6

28,5 + 22.1 = 50.6

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Multiply: (3x – 5)(–x + 4)

LiRa [457]

Answer:

Step-by-step explanation:

(3x – 5)(–x + 4)

(3x)(–x) + (3x)(4) + (–5)(–x) + (–5)(4).

-3x^2+12x +5x -20

-3x^2+ 17x -20

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3 years ago

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How do I simplify this problem?

tamaranim1 [39]

I think you would just have to find the square roots

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3 years ago

An employee worked 175.25 hours in January, 162 hours in February, 158 hours in March and 175 hours in April. What was the avera

Scorpion4ik [409]

He work an average of 167.56 hours each month

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3 years ago

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How do I do this? Help!

Hitman42 [59]

Notice the picture below

you have two triangles, and you have the opposite and adjacent sides

thus, recall your SOH CAH TOA $\bf sin(\theta)=\cfrac{opposite}{hypotenuse}
\qquad \qquad 
% cosine
cos(\theta)=\cfrac{adjacent}{hypotenuse}

\\ \quad \\\\
% tangent
tan(\theta)=\cfrac{opposite}{adjacent}$

anyhow.. the one that has only
the angle
the opposite
and the adjacent

is Ms Tangent, so lets ask her some

$\bf tan(29^o)=\cfrac{x}{y}\implies y\cdot tan(29^o)=x
\\\\\\
tan(25^o)=\cfrac{x}{100-y}\implies (100-y)tan(25^o)=x\\\\
-----------------------------\\\\
x=x\qquad thus\qquad y\cdot tan(29^o)=(100-y)tan(25^o)$

solve for "y"

4 0

3 years ago

The area of a sector is a secotor = n/360 degrees pie r 2^ what does the term n/360 degrees

Stella [2.4K]

Answer:

4th option

Step-by-step explanation:

$\frac{n}{360}$ represents the fraction of the circle occupied by the sector , that is

The ratio of degrees in the sector's central angle to the total number of degrees in the circle

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3 years ago