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3 years ago

Find the area of each figure

Mathematics

2 answers:

Naddik [55]3 years ago

7 0

Answer ~ 17.5
Explanation ~
B•h/2
5•7=35
35/2=17.5
:)

marin [14]3 years ago

5 0

Answer:

17.5

Step-by-step explanation:

7*5/2

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To estimate the product 3.48 times 7.33,Marisa multiplied 4 times 8 to get 32.Exsplain how she can make a closer estimate

notka56 [123]

Marisa had rounded 3.48 to 4 and times it to 7.33 which she rounded to 8

In fact 3.48 is closer to 3 we know this since the .48 of 3.48 s below .50 if it was .50 or above it would round to 4 but it doesn't the same applies to 7.33 so

it should be 3 x 7 = 21

5 0

3 years ago

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5x + 2 = 3x + 4(2x - 1)<br><br> show steps

LUCKY_DIMON [66]

Answer:

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Step-by-step explanation:

5x+2=3x+4(2x-1)

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3 years ago

0=(x+3)(x-2)?????????

VLD [36.1K]

Answer:

x=-3, x=2 or x=3,2

4 0

4 years ago

HELP ASAP WILL GIVE BRAINLIEST!!!

Savatey [412]

Answer:

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Step-by-step explanation:

3 0

3 years ago

A country's population in 1991 was 114 million. In 1997 it was 120 million. Estimate the population in 2014 using exponential gr

Rufina [12.5K]

The answer is 138 million.

Step 1. Calculate the growth rate.
Step 2. Calculate the population number in 2014.

We will use the formula for exponential growth:
A = P * eⁿˣ
where:
A - the final amount (value)
P - the initial amount (value)
e - the mathematical constant (e ≈ 2.72)
n - the growth rate
x - the time

Step 1:
A = 120 million = 120 000 000
P = 114 million = 114 000 000
n = ?
x = 1997 - 1991 = 6
Therefore:
$120 000 000 = 114 000 000 * e ^{n*6} \\ e ^{n*6} =120 000 000 /114000000 \\ e ^{n*6} =1.05 \\$
Logarithm both sides of the equation:
$ln(e ^{n*6})=ln(1.05) \\ n*6*ln(e) = ln(1.05) \\ 6n=ln(1.05) \\ n = \frac{ln(1.05)}{6} \\ n = \frac{0.05}{6} \\ n = 0.0083$

Step 2:
Now when we know the growth rate, it is easy to estimate the population in 2014
A = ?
P = 120 000 000
n = 0.0083
t = 2014 - 1997 = 17
$A = 120 000 000 * e ^{0.0083*17} \\ 
A = 120 000 000 * e^{0.1411} \\ 
A = 120 000 000 * 1.15 \\ 
A = 138 000 000
$
Thus, the population will be 138 million in 2014

8 0

3 years ago