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2 years ago

Solve for the variable (letter): f 2=6 I need help pls this is the only question I need :)

Mathematics

1 answer:

Marina CMI [18]2 years ago

5 0

f=3 since 2 divided by 2= 1 and a variable counts as 1 so its just f. now divide 6 by 2 and you get 3. f=3

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Area of Composite Shapes (Trapezoids and Triangles)

dolphi86 [110]

It is 8.7cm just trust me bro I got it right

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2 years ago

A recent study was conducted to explore the relationship between the weight of a car and miles per gallon (gas mileage). A linea

k0ka [10]

Answer: a. iv. The weight of a car can be used to explain about 79.6% of the variability in gas mileage using a linear relationship.

b. ii. There is a fairly strong, negative relationship between car weight and miles per gallon.

Step-by-step explanation:

A coefficient of determination (denoted by R²) is a measure in a regression model that determines proportion of the variance in the dependent quantity that is predictable from the independent quantity.

It is square of correlation coefficient (R).

Here, independent quantity = weight of a car

dependent quantity = miles per gallon (gas mileage)

The coefficient of determination (R²) was reported to be 79.6%.

That means, The weight of a car can be used to explain about 79.6% of the variability in gas mileage using a linear relationship.

A correlation coefficient(R) tells about the strength and direction of relation .
It lies between -1 and 1.

For the study, the correlation coefficient R is -0.8921.

There is a fairly strong, negative relationship between car weight and miles per gallon.

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3 years ago

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2 years ago

If PQRS is a rhombus, which statements must be true? Check all that apply.

bezimeni [28]

These statements are true:

$\bold{First.} \ \overline{PS} \ is \ parallel \ to \ \overline{QR}$

This is true because of the definition of a rhombus which states that opposite sides are parallel.

$Then \ \overline{PS} \ is \ opposite \ to \ \overline{QR}$

$\bold{Second.} \ \overline{PR} \ is \ perpendicular \ to \ \overline{QS}$

This is true because the diagonals of a rhombus bisect each other at right angles.

$\bold{Third.} \ \overline{PQ}=\overline{RS}$

This is true because the four sides of a rhombus are all equals.

$\bold{Fourth.} \ \angle PQR \ is \ supplementary \ to \ \angle QPS$

This is also true. Two angles are supplementary when they add up to 180 degrees. Angles in rhombus are equal two to two. Let's name:

$\angle PQR = \alpha \ and \ \angle QPS = \beta$

Then it is true that:

$\angle PQR=\angle PSR \ and \ \angle QPS=\angle QRS$

Besides, a rhombus is a quadrilateral and it is true that the interior angles of a quadrilateral add up to 360 degrees, thus:

$2\alpha+2\beta=360 \\ \\ \therefore \boxed{\alpha+\beta = 180^\circ}$

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3 years ago

Read 2 more answers

How to write a number increased by 11 is eaqual to twice the number decreased by 12

Nataliya [291]

Answer: The number is 23

Step-by-step explanation:

Let x be the [number]

Rephrase the expression

a number increased by 11 is equal to twice the number decrease by 12

x+11=2x-12

Add 12 on both sides

x+11+12=2x-12+12

x+23=2x

Subtract x on both sides

x+23-x=2x-x

x=23

Hope this helps!! :)

Please let me know if you have any questions

3 0

2 years ago