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borishaifa [10]
3 years ago
8

How to solve it don't understand a thing

Mathematics
1 answer:
sashaice [31]3 years ago
5 0

Answer:

1) 40ft^2

2)320mm^2

3) 96m^2

Step-by-step explanation:

first one

find the area of the bigger rectangle (80)

find the area of the inner rectangle (40)

subtract the bigger one from the smaller one(80-40=40)

shaded area is 40ft^2

second one

find the area as if it were a rectangle(720 cm)

find the area of the inner(400cm)

subtract the bigger from the smaller(720-400=320)

answer: 320mm^2

third

find area of the big square(196)

find area of one tiny unshaded square(25)

since all are the same 25x4 is 100

196-100=96

answer;96m^2

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Evaluate -a+(-b)−a+(−b)minus, a, plus, left parenthesis, minus, b, right parenthesis where a = 6.05a=6.05a, equals, 6, point, 05
swat32

Answer: -9.66

Step-by-step explanation:

Here the given expression,   -a + (-b)

Where  a = 6.05 and b =3.61

By putting the given values of a and b in the given expression,

We get,

- 6.05 + ( -3.61)

= -6.05 - 3.61

= - (6.05 + 3.61)

= - 9.66

3 0
3 years ago
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Please helppp fast!!Simplify (4x^5)^2 (x^10)^1/2
Oksi-84 [34.3K]

Answer:

(4^2*x7)(x^10.5)

8 0
3 years ago
before the recent house bonding there were 3212 houses in Fulton country now there are 3979 houses. How many houses did develope
lorasvet [3.4K]

Answer:

767 houses

Step-by-step explanation:

Initially there are 3212 houses in the city.

After the boom there are 3979 houses in the city.(due to boom there is an increase in the number of houses).

The number of houses developed by the developers is the difference between the number of houses before and after the boom.

The number of houses developed=3979-3212=767 houses

6 0
3 years ago
What is one way you can calculate 0.25 times 0.044 as a decimal?
Rudik [331]

Answer:

0.011

Step-by-step explanation:

let's see so first

first you line the numbers on the right (DO NOT ALINE DECIMAL POINTS)

second, starting from on the right multiply each digit in the top number by each digit in the bottom number just as whole numbers .

after add the products

7 0
3 years ago
My sister needs help !!!!!!!
yuradex [85]
A coin has one of two outcomes: heads or tails.
Each has an equal probability of occurring, meaning that they each have a 50% chance to occur. (They need to add up to 100% because they include all the outcomes, divide that into two equal parts and...)

This is what we call theoretical probability. It's a guess as to how probability <em>should</em> work. Like in the experiment, it's not always going to be 50-50.

What <em>actually happens</em> is called experimental probability. This may vary slightly from theoretical probability because you can't predict probability with complete certainty, you can only say what is <em>most likely to happen</em>.

We want to find the probability of getting heads in our experiment so we can compare it to the theoretical outcome. To do this, we need to compare the number of heads to the total number of outcomes.

We have 63 heads, and a total of 150 coin flips.
That makes the probability of getting a heads 63/150.
The hard part is getting this ratio into a percent.

You can try simply dividing, but you should be able to notice something here.
SInce the top and the bottom of our fraction are both divisible by 3, we can <em>simiplify</em>.
63 ÷ 3 = 21
150 ÷ 3 = 50
So we could say that 63/150 = 21/50.

A percent is basically a fraction out of 100.
Just like you can divide the parts of a ratio by the same number and it will stay the same, you can also multiply. To get the fraction out of 100, let's multiply by 2.
(since 50 × 2 = 100)

21 × 2 = 42
50 × 2 = 100
21/50 = 42/100 = 42%

Comparing our experimental probability to the theoretical one...it is 8% lower.
7 0
3 years ago
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