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3 years ago

How do you divide decimals?

1 answer:

6 0

It's the same as normal division. All you need to do is add the decimal in. Let me show you:

2.5/2
2/2 What's 2 divided by 2? It's 1.
.5/2 What's 5 divided by 2? 2.5, right? But since it's .5 (not 5) divided by 2, the decimal goes somewhere else. Since the 5 comes just to the right of the decimal, so will the 25. You have .25.

1 + .25 = 1.25. And that's the answer! 2.5/2=1.25. See how I broke it up into pieces? It makes life easier.

Don't forget to rate this answer the Brainliest!

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Solve by substitution: 2x-y = -5 -x+-y =10

Elenna [48]

2x-y=-5
-x-y=10
3x=-15
x=-5
-10-y=-5
-y=-5+10
-y=5
y=-5
HOPE I HELPED!!!

6 0

3 years ago

Read 2 more answers

a rectangle has an area of 34 sqaure feet. A larger rectangle has an area of 124 sqaure feet. what is the percent increase of th

amid [387]

Answer:

The difference in areas:

124 - 34 = 90 square feet

Percent increase:

90/34*100% = 264.71%

5 0

2 years ago

Im needing help yall

mario62 [17]

A and B I believe.

It would be A because jump height can be found out by the amount of force you exert to get you into the air minus the gravitational force.

It would also be B because the amount of time you run on the track can be found out by dividing the track length by your speed on the track.

Hope this helps!

5 0

3 years ago

PLEASE HELP!!!! 100 ÷ 25 • 20 + 4 ÷ 2 – 14

Zolol [24]

The answer is 38

Hope this helps : )

3 0

3 years ago

Read 2 more answers

In triangle ABC we have angle C = 3 times angle A, a=27 and c=48 What is b? Note: a is the side length opposite A etc. please he

Dima020 [189]

Answer:

Step-by-step explanation:

The law of sines tells us ...

sin(C)/c = sin(A)/a

a·sin(3A) = c·sin(A)

Using the identity sin(3x) = 3cos(x)·sin(x) -sin(x)^3 and sin(x)^2 +cos(x)^2 = 1, we can simplify this to ...

sin(A)(4cos(A)^2 -1) = (c/a)sin(A)

4cos(A)^2 = c/a +1 = (48+27)/27 = 75/27 = 25/9

cos(A)^2 = 25/36

cos(A) = 5/6

Now, the angle B will be the difference between 180° and the sum of the other two angles:

B = 180° -A -3A = 180° -4A

Using appropriate trig identities, we can write ...

sin(B) = 4cos(A)^3sin(A) -4sin(A)^3cos(A)

= 4sin(A)cos(A)(cos(A)^2 -sin(A)^2)

= 4sin(A)cos(A)(2cos(A)^2 -1)

Filling in our value for cos(A), this becomes ...

sin(B) = 4sin(A)(5/6)(2(5/6)^2-1) = sin(A)(35/27)

The law of sines tells us ...

b/sin(B) = a/sin(A)

b = a·sin(B)/sin(A) = 27(35/27)sin(A)/sin(A) = 35

The length of side b is 35 units.

6 0

3 years ago