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3 years ago

Can someone help me on these two cuz honestly I don't know

Mathematics

2 answers:

harina [27]3 years ago

5 0

Answer:

-a+-b= negative

a-(-b) =positive

-a-b= negative

Step-by-step explanation:

aliina [53]3 years ago

3 0

Answer:

1. -a + b = depends on which integer is bigger, if b is bigger than a, then it would be positive. If -a is bigger, then it will be negative

2. a-(-b) = positive

3. -a * b = negative

a. 87 + 65 b. -58+42

c. 73+(-55) d. -47+(-30)

Step-by-step explanation:

Remember:

two positives(multiply or divide) = positive

two negatives(multiply or divide) = positive

a positive and a negative(multiply or divide) = negative

two positives(addition) = positive, (subtract) = depends on which integer is bigger

two negatives(addition) = positive, (subtract) = depends on which integer is bigger

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Alex787 [66]

6+2(x+8)+3x+11+x
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3 years ago

Expand: (2n + 5k)2 polynomial identeties

Tanzania [10]

(2n + 5k)^2 = (2n + 5k)(2n + 5k)
Here we need to use FOIL
First - 2n * 2n = 4n^2
Outside - 2n * 5k = 10nk
Inside - 5k * 2n = 10nk
Last - 5k * 5k = 25k^2

That gives us 4n^2 + 10nk + 10nk + 25k^2, we can combine 10nk + 10nk to give 20nk, and a final equaion of 4n^2 + 20nk + 25k^2

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4 years ago

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Please simplify each expression for 18, 20, and 21

NeX [460]

The answer to the questions

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4 years ago

The Farmer Supply is building storage building for fertilizer shaped top. The that has cylindrica base and cone county laws say

creativ13 [48]

Assuming ℎ1 = 11 feet and ℎ 2 = 3 feet, the storage of the facility is going to be 603 cubic feet, which is more than 576 cubic feet

The diameter of the building has been given as 8cm

radius = d/2 = 8/2 = 4

Maximum height = h1 + h2 = 14

Find the volume of the fertilizer that is containeed in both of the trucks

2(12x4x6) = 576 feet

From the height of 14 feets we have to assume

h1 = 11 ft,

h2 = 3 ft

<h3>How to solve for volume</h3>

$volume =\frac{1}{3} \pi r^{2} h2 + \pi r^{2} h1$

= 0.333*3.14*4²*3 + 3.14*4²*11

= 602.8 ft ≈ 603

Read more on volume here: brainly.com/question/12410983

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2 years ago

Brainiest to whoever right

Anna35 [415]

Answer:

since M lies between point A and B , we came to know that,

M(4,6) =(x,y)

A(-2,-1)=(x1 ,y1)

B( _, _ )=(x2,y2)

Now using mid point formula,

x=x1×x2÷2 y=y1+y2÷2

so, point B is (10,13)

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3 years ago