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3 years ago

I need help on this please it’s based on evaluate expressions

Mathematics

1 answer:

dmitriy555 [2]3 years ago

3 0

Answer: 9-3 = 6

Step-by-step explanation: since z=3 and w= 3

you would plug the numbers in for the variables, giving you = 3x3-3, which equals 9-3

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3x-5y=12 solve for Y

ladessa [460]

Answer:

y=12/5−3x/5

Step-by-step explanation:

might be wrong

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3 years ago

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Translate each sentence into an equation.

iogann1982 [59]

Answers

1. 1/4 x M-6= (m+9)x2

Ps. Couldn’t do 4

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2 years ago

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From her window, Carmella looks up to the top of a neighboring building at an angle of 46°. Her

Vinil7 [7]

Answer:

$270.3\ ft$

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

In the right triangle ADE

Find the value of h1

See the attached figure

h1=AD

$tan(25\°)=\frac{h_1}{180}$

Solve for h1

$h_1=(180)tan(25\°)\\h_1=83.94\ ft$

step 2

In the right triangle ABC

Find the value of h2

See the attached figure

h2=BC

$tan(46\°)=\frac{h_2}{180}$

Solve for h2

$h_2=(180)tan(46\°)\\h_2=186.40\ ft$

step 3

Find the height of the neighboring building

we know that

The height of the neighboring building is equal to

$h=h_1+h_2$

substitute the values

$h=83.94+186.40=270.34\ ft$

Round to the nearest tenth of a foot

$h=270.3\ ft$

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3 years ago

What should be added to (-5 a2b - 9 ab) to get a2b + 3 ab?

Doss [256]

Based on given conditions,

$a²b + 3 ab - (-5 a²b - 9 ab)$

$→a²b + 3 ab + 5 a²b + 9 ab$

$→(a²b + 5 a²b) + (3ab + 9 ab$

Now collecting the coefficients and adding them,

$(1 + 5)a²b + (3 + 9)ab$

$→6 {a}^{2}b + 12ab$

Hence, the 6a²b + 12ab should be added.

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2 years ago

What numbers to put in the table

alexandr1967 [171]

The missing numbers for distance are 9 and 20

The missing numbers for time are 12 and 48

(im going left to right)

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