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3 years ago

(-16) - (-4) and (-16) + 4 A. Equal B. Not equal

Mathematics

2 answers:

tekilochka [14]3 years ago

7 0

They are equal
If there are two negatives like 2-(-3) the equation could be rewritten as 2+3

mina [271]3 years ago

3 0

They are equal

(-16)-(-4)
*negative and negative make a positive

-16+4= -12

-16+4=-12

They both make -12. They both are equal

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B. If the bus continued on from Madison and then traveled to LaCrosse for a total distance of 217 miles,

igomit [66]

The disnatcw would be 540

8 0

2 years ago

Convert the polar coordinates (-3, -60°) to Cartesian coordinates.

notsponge [240]

Answer:

(1.5,-2.6)

Step-by-step explanation:

Given the polar coordinates (-3,60°).

Let our Cartesian coordinates be (x,y)

#We know that when converting the rectangular coordinates (x,y) to polar (r,θ), then:

$r=\sqrt{x^2+y^2}\\\\\therefore r^2=x^2+y^2\\\\\theta=tan^{-1}(y/x)\\\therefore tan \theta=y/x$

#Using the illustration above, we can express our polar coordinates as:

$-3=\sqrt{x^2+y^2}\\\\-60\textdegree=tan^{-1}(y/x}$

#Solve simultaneously to solve for x and y:

$(-3)^2=x^2+y^2\ \ \ \ \ \ \ \ \ \ i\\\\tan(-0\texdegree)=y/x\ \ \ \ \ \ \ \ ...ii\\\\y=x\ tan(-60\textdegree)\ \ \ \ \ \ \ ...iii\\\\\#substitute\ y \ in\ i\\\\(-3)^2=x^2+(x \ tan (-60\textdegree))^2\\\\9=x^2+3x^2\\\\x=\sqrt{9/4}=1.5\\\\y=1.5\ tan(-60\textdegree)=-2.5981\approx-2.6$

Hence, the Cartesian coordinates are (1.5,-2.6)

6 0

2 years ago

Of the 20 students in Emily's class 15 like chocolate cake and the rest like cheesecake how many like cheesecake and what percen

alisha [4.7K]

5 students like cheesecake because if there is 20 students in all and 15 like chocolate and the rest like cheesecake you do 20-15=5

If 5 students like cheesecake out of 20 it would be 5/20 20*5=100 just multiply by 5 5*5=25%

25% of students like cheesecake

4 0

3 years ago

Read 2 more answers

Henry is staining the wooden floor of a court. The court is in the shape of a rectangle. Its length is 54 feet and its width is

tensa zangetsu [6.8K]

Answer:

Henry would need 12 cans to cover the court

Step-by-step explanation:

1: 30 times 54 = 1620

2: 1620 divided by 135 = 12

8 0

3 years ago

Fractions and mixed numbers I need help!!!

zimovet [89]

Answer:

The answer would be D, or $3^{3} *3^{2}* 5$

Step-by-step explanation:

A is 540

B is 30

C is 720

D is 360

7 0

2 years ago