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2 years ago

Need help with math points and brainlest

Mathematics

1 answer:

Nitella [24]2 years ago

4 0

Answer:

Step-by-step explanation:

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The temperature for 5 days is shown in the table. If on the 6th day the temperature was 83°, by how much will this increase the

Gala2k [10]

It’s b I’m pretty sure sorry if wrong

4 0

2 years ago

What is the rate of change between the points 6,45 and 9,67.5

pochemuha

Answer:

7.5

Step-by-step explanation:

the slope m is a measure of the rate of change

Calculate m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (6, 45 ) and (x₂, y₂ ) = (9, 67.5 )

m = $\frac{67.5-45}{9-6}$ = $\frac{22.5}{3}$ = 7.5 ← rate of change

5 0

2 years ago

Write the following sum using summation notation -2/5+3/6-4/7........11/14

horrorfan [7]

Answer:

$\sum_{n=1}^{10}(-1)^n\left ( \frac{n+1}{n+4} \right )$

Step-by-step explanation:

Given: $\frac{-2}{5}+\frac{3}{6}-\frac{4}{7}+...+\frac{11}{14}$

To write: the given expression using summation notation

Solution:

Summation notation helps to write a long sum as a single expression.

In the summation notation, the variable $\sum$ is called the index of summation.

Let $x_1,x_2,x_3,...,x_n$ denote a set of n numbers.

Then in summation notation,

$x_1+x_2+x_3+...+x_n=\sum_{i=1}^{n}x_i$

$\frac{-2}{5}=(-1)^1\left ( \frac{1+1}{1+4} \right )\\\frac{3}{6}=(-1)^2\left ( \frac{2+1}{2+4} \right )\\\frac{-4}{7}=(-1)^3\left ( \frac{3+1}{3+4} \right )\\.\\.\\.\\\frac{11}{14}=(-1)^10\left ( \frac{10+1}{10+4} \right )\\\therefore \frac{-2}{5}+\frac{3}{6}-\frac{4}{7}+...+\frac{11}{14}=\sum_{n=1}^{10}(-1)^n\left ( \frac{n+1}{n+4} \right )$

3 0

3 years ago

Martha has widow's peak and attached earlobes. Martha's dad had a straight hairline and unattached earlobes. If Martha marries a

krok68 [10]

Answer:

the probability of having a widow peak and attached earlobe = 0.6667*0.66667 = 0.4445 = 44.5%

Step-by-step explanation:

Martha = widow's peak + attached earlobes.

Martha's dad = straight hairline + unattached earlobes.

Martha husband =straight hairline+ widow's peak + attached earlobes

what is the probability that Martha child will have a widow's peak + attached earlobes?

since,

Martha + Martha husband =straight hairline+ widow's peak + attached earlobes

the probability of the child having widow peak is 2/3 = 0.6667

the probability of the child having attached earlobes is 2/3 = 0.66667

the probability of having both = 0.6667*0.66667 = 0.4445

6 0

3 years ago

In 2016, George Washington's birthday fell on Friday, February 12. On what day of the week does George's birthday fall in 2025?

LuckyWell [14K]

Answer:

the Day falls one day after every year which means that this one will fall on a

Step-by-step explanation:

wedsnday

5 0

2 years ago