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Lostsunrise [7]
3 years ago
11

I really need help with 1 and 2 please help me

Mathematics
2 answers:
mariarad [96]3 years ago
5 0
For answer #1. just divide both numbers by 8.
Let's see:
400=8r
400/8=8r/8
400/8 equals 50
So, answer #1 is 50.

For answer #2, count the number of times it shows 5, then write that number on the top, in the right-hand corner.(or use an arrow to show it's going up)
Let's see:
5×5×5×5×5=5 times it shows 5
So, 5∧5 would be the answer.

AlekseyPX3 years ago
4 0
R=50 because 8×50=400 so that is what r would equal
The exponent would be 5 the fifth power, because since the number your using to multiply it by is 5 and you are multiplying is by 5 fives it would be 5 to the fifth power
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Hugo and Koby are measuring the heights of plants in biology class.
Verizon [17]

The answers are shorter, higher, 2cm, 15cm, 20% and 15%.

Step-by-step explanation:

Step 1; From the given data Hugo measured his plant higher than its original height. Hugo measured his plant as 12 cm while it was actually 10 cm. So Hugo's measurement was off by 2cm. Hugo's percent error is given by dividing the difference in values by the actual value.= multiplied by 100.

% error = (difference in values / actual value) × 100

Hugo's % error = (12 - 10)/ 10 × 100 = 2/10 × 100 = 20%.

Step 2; Koby measured his plant lower than his plant's original height. He measured it to be 85 cm while it was 100 cm tall. So Koby's measurement was off by 15cm. The percent error is calculated in the same way.

% error = (difference in values / actual value) × 100

Koby's % error = (100 - 85)/ 100 × 100 = 15/100 × 100 = 15%.

Step 3; Hugo had a percent error of 20% while Koby has a percent error of 15%. So Hugo had a higher percent error of the two.

3 0
3 years ago
Read 2 more answers
16.437 rounded to the nearest tenth is 164.
Alex
False.
You are rounding to the nearest tenth place. With your decimal value, 3 < 5, so therefore you cannot round the 4 up to 5. Given this, your correct decimal rounded to the nearest tenth = 16.400
7 0
3 years ago
6x-4y=48 get x by itself
sattari [20]

Answer:

x= 8 + 2y/3

Step-by-step explanation:

6x = 48+4y

x = 48/6 + 4y/6

simplify

x= 8 + 2y/3

6 0
3 years ago
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Use what you've learned in this unit to model the population of Western
nekit [7.7K]

The population function of the Western Lowland Gorillas can either represent population growth or population decay

<h3>How to model the population</h3>

The question is incomplete, as the resources to model the population of the Western Lowland Gorillas are not given.

However, the following is a general guide to solve the question.

An exponential function is represented as:

y = a(1 \pm r)^x

Where:

  • (a) represent the initial value i.e. the initial population of the Western Lowland Gorillas
  • (r) represents the rate at which the population increases or decreases.
  • (x) represents the number of years since 2022
  • (y) represents the population in x years

Given that the population of the Western Lowland Gorillas decreases, then the rate of the function would be 1 -r (i.e. an exponential decay)

Take for instance:

y = 2000 * 0.98^x

By comparison.

a = 2000 and 1 - r = 0.98

The above function can be used to model the population of the Western Lowland Gorillas

Read more about exponential functions at:

brainly.com/question/26829092

5 0
2 years ago
Find an explicit rule for the nth term of the sequence.
Sphinxa [80]

Step-by-step explanation:

in a geometric sequence there is a constant factor x that is multiplied with every previous term to create the next one.

a2 = 20

a5 = 1280 = a2×x×x×x = a2×x³ = 20x³

64 = x³

x = 4

=> a1 = 5

therefore

an = an-1×4 =

a1 \times  {4}^{n - 1}

n > 1

7 0
3 years ago
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