All categories

3 years ago

If you can answer these questions im giving Brainly:)

Mathematics

2 answers:

san4es73 [151]3 years ago

5 0

Answer:

part 1 is -10.9 and part 2 is 13

Step-by-step explanation:

son4ous [18]3 years ago

5 0

Answer:

Question 1: 10.9 Question 2: 13

Step-by-step explanation:

Don't give me brainliest give it to the other person who answered. They answered first

You might be interested in

A sports physiologist randomly selected 48 athletes and measured both their weight and how much weight they could lift. She foun

LenaWriter [7]

Answer:

Option c) The more an athlete weighs, the more he can lift, on average.

Step-by-step explanation:

We are given the following information in the question:

Sample size = 48

The correlation between body weight and how much weight athlete could lift is 0.850

Correlation:

Correlation is a technique that help us to find or define a relationship between two variables.

A positive correlation means that an increase in one quantity leads to an increase in another quantity

A negative correlation means with increase in one quantity the other quantity decreases.

Thus, a high positive correlation shows that Option c) The more an athlete weighs, the more he can lift, on average.

3 0

4 years ago

A company makes spherical tanks that store chemicals. Their standard model has a diameter of 6 meters, but a customer needs a la

Deffense [45]

Answer:

The approximate diameter of the larger tank is 8.10 meters

Step-by-step explanation:

Here, we want to calculate the diameter of the larger tank

The volume of a sphere

V = 4/3 * π * r^3

Let us calculate the volume of the standard model

That will be;

Since diameter is 6 and r = d/2

r = 6/2 = 3 meters

V = 4/3 * π * 3^3 = 36 π m^3

Now, the volume of the larger tank is 2.5 times of this;

The volume of the larger tank is 2.5 * 36 π = 90 π m^3

So we can calculate the radius of this before we calculate its diameter

4/3 * π * r^3 = 90 π

4r^3/3 = 90

r^3 = 270/4

r^3 = 67.5

r = 3x√(67.5)

r = 4.07 m

Diameter here is 2 times this

= 4.07 * 2 = 8.14

6 0

3 years ago

The width of a rectangle is 61 centimeters more than the length. The perimeter is 406 centimeters. Find the length and the width

valentinak56 [21]

$Step \; 1: \; Assign \; Variables \; for \; the \; unknown \; that \; we \; need \; to \; find$

$Let \; x \; be \; length \; of \; the \; rectangle$

$Step \; 2: \; Set \; up \; equation \; based \; on \; information \;\\ given \; about \; the \; rectangle$

$Statement \; 1: Width \; of \; a \; rectangle \; \\is \; 61cm \; more \; than \; the \; length\\\\Width \; = \; 61+x\\\\Statement \; 2: \; The \; perimeter \; is \; 406cm\\\\Perimeter=2(Length+Width)\\Perimeter =2(x+61+x)\\\\So \; the \; mathematical \; equation \; would \; be \\ 2(x+61+x)=406$

$Step \; 3: \; Solve \; the \; equation \; by \\ undoing \; whatever \; is \; done \; x.\\\\2(x+61+x)=406\\Group \; and \; Combine \; like \; terms \; inside \; the \; parenthesis\\\\2(2x+61)=406\\Distribute \; 2 \; in \; the \; left \; side \; of \; the \; equation\\\\4x+122=406\\Subtract \; 122 \; on \; both \; sides\\\\4x+122-122=406-122\\Simplify \; on \; both \; sides\\\\4x=284\\Divide \; on \; both \; sides\\\\\frac{4x}{4}=\frac{284}{4}\\Simplify \; fractions \; on \; both \; sides\\\\x=71$

$Conclusion:\\Length=x=71cm\\Substituting \; 71 \; for \; x \; and \; find \; Width \; value.\\Width=61+x=71+61=132cm\\\\Length \; is \; 71 cm \; and \; Width \; is 132cm$

5 0

4 years ago

Solve this system of equations using

Neporo4naja [7]

Answer: Please Mark Brainliest :) !!

The answer is x= 6 and y= 27.

Step-by-step explanation:

3x + 9 = 5x + 3

-2x + 9 = -3

y = 5x -3

x = 6

y = 5x -3

y = 5(6) -3

y = 27

8 0

4 years ago

Read 2 more answers

Which one of the following is a true statement about a circle inscribed in a regular polygon?

dusya [7]

B. the sides of the polygon are tangents of the circle.

8 0

4 years ago