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3 years ago

Please give me an explanation -8[-20+(-9+5)²]=32

Mathematics

2 answers:

kipiarov [429]3 years ago

5 0

Answer:

Step-by-step explanation:

-8( - 20+ (-4)2) = 32

-8(-20 + 16) = 32

-8(-4) = 32

32 = 32

Airida [17]3 years ago

3 0

Answer:

1.(-9+5)^2=16////2.-20+16=-4 /-4*-8=32

Step-by-step explanation:

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What is percent decrease from 41 to 39?

SpyIntel [72]

First find the difference between 41 and 39, 41-39=2 Then divide your answer by 41 and multiply by a 100.
2/41*100=4.878%(rounded to the nearest thousandth)
So the percent decrease from 41 to 39 is 4.878%

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4 years ago

I need help cause uh i’m dumb

ozzi

Answer:

$650

Step-by-step explanation:

9100-4500 = 4550

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4 years ago

Find the area of the shape shown below.

joja [24]

Answer:

42.5

Step-by-step explanation:

Is this from khan? Meh, anyways, we need to find the area of the missing sides first.

The formula for area of a triangle is:

1/2(b×h)

So we multiply two and two and you get four. 2×2=4

Then you divide and that would be two. 4÷2=2

For the next one, you do the same.

You multiply five and two, which gives you ten. 5×2=10

Then you divide by two, which gives you five. 10÷2=5

Then you add the missing area lengths together to get a total of seven.

Then you would find the entire area. By that, I mean the whole thing.

I'm not sure if you noticed but the height of the missing triangle on the left is two.

2+3.5=5.5.

So that means that we have found out the entire height.

5.5×9=49.5

But that's not the answer. That's because the shape most certainly not a whole shape. It has some missing parts, if you see what I mean.

So that means that you have to subtract the area missing from the total area. That would be....

49.5 - 7 = 42.5

total missing actual

area area area

8 0

3 years ago

Which number line represents the solution 6x<42 ?

tino4ka555 [31]

Answer:

Step-by-step explanation:

+2($($;$)2:

hope it helps

5 0

3 years ago

1. 72% of the students in Math 6 at AZVA are currently passing mastering their lessons. If 324 students are currently mastering

Alexeev081 [22]

Answer:

1. a. 72/100 = 324/x

72x = 32,400

b. 450 students are in Math 6

2. a. o = 3b

b. o = 3 pounds

3. a. Most popular animals:

A. Dogs - 67%

B. Cats - 20%

C. Other - 8%

D. None - 4%

E. Horses - 1%

b. 20 students

c. If 75 students have cats, the estimate of 250 students isn't correct.

The actual number of students interviewed is 375.

Step-by-step explanation:

1. a. Let's use the following equation to solve the question:

x = Students that are in Math 6

72/100 = 324/x

72 * x = 324 * 100

72x = 32,400

b. Let's solve the equation, as follows:

x = 32,400/72

x = 450

450 students are in Math 6

2. a. The equation is:

o = 0.15 *20b

o = 3b

where, o = weight of oats in pounds and b = number of dog food bags

b. Let's find out the weight of the oats in one dog food bag, using our equation:

o = 0.15 *20b

o = 0.15 *20 * 1

o = 3 pounds

3. a. Most popular animals:

A. Dogs - 67%

B. Cats - 20%

C. Other - 8%

D. None - 4%

E. Horses - 1%

b. If 250 students were interviewed, the 8% who answered "other" are:

8% of 250 = 0.08 * 250 = 20 students

c. If 75 students have cats, the estimate of 250 students isn't correct.

The 20% of 250 is 50, not 75.

0.2 * 250 = 50

The actual number of students interviewed is:

x = Actual number of students interviewed

75/x = 20/100

20x = 7,500

x = 7,500/20

x = 375

The actual number of students interviewed is 375.

3 0

3 years ago