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quester [9]
3 years ago
8

What is the area of triangle PQR to the nearest tenth of a square meter? Drawing is not to scale. A. 24.1 m2 B. 34.4 m2 C. 48.2

m2 D. 68.8 m2

Mathematics
2 answers:
tatyana61 [14]3 years ago
5 0

Answer:

b

Step-by-step explanation:

borishaifa [10]3 years ago
3 0

Answer:

the answer is b

Step-by-step explanation:

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3. Mrs.Galicia bought 3 tacos and 2 sodas and paid $9.75. The next day she went back and bought 5 tacos and 1 soda and paid $12.
andrey2020 [161]

Answer:

a) 3x + 2y  = 9.75,  5x + y =  12.75  is the required system of equations.

b) The cost of 1 soda =  $1. 5

c) The cost of 1 taco = $2.25

Step-by-step explanation:

Let the cost of each taco = $x

Let the cost of each soda  = $y

Now, according to the question:

3x + 2y  = $9.75

5x + y = $12.75  are the required system of equations.

Now, substituting the value of y = 12.75 - 5x  in (1).

⇒The equation 3x + 2y  = 9.75 becomes 3x + 2(12.75 -5x)  = 9.75

or, 3x - 10x + 25.5  = 9.75

or, -7x = -15.75

⇒ x = 15.75/7  = 2.25

Hence, the cost of 1 taco = $x = $2.25

Now, y =  12.75 - 5x

 = 12.75 - 5(2.25) = 12.75 - 11.25   = = 1.5

or, y =  $1.5.

Hence, the cost of 1 soda =  $y = $1.5

3 0
3 years ago
Someone, PLEASE HELP ME ASAP Martha and Howard are running at a constant
denpristay [2]

Answer:

Martha,because he/she runs 4.5 MPH which means he/she runs in 22.5 miles 5 hours

Howard is running 3.2 MPH

Howard will run 16 miles in 5 hours

3 0
3 years ago
I could really use your help:)
Colt1911 [192]

Answer:

Question 1: -3 and 6 in that order

Question 3: 3 and y=1/2x+3 in that order

Question 2: 2 and y=2x+4 in that order

Step-by-step explanation:

:)

3 0
3 years ago
A measure of the strength of the relationship between two variables is referred to as the A. standard deviation of the estimate.
marin [14]

Answer:

D. Coefficient of Correlation

Step-by-step explanation:

The name itself "Coefficient of Correlation" involves the word correlation, meaning relationship between two things.  

The coefficient of Correlation is used to determine how strong a relationship is between two variables.

The formula of Coefficient of Correlation gives a value between -1 and 1. Moreover, it helps to plot a graph showing the strength of relationship.

1 : A strong positive relationship

-1: A Strong negative relationship

0: No relationship at all

One of the most used formula is Pearson Correlation Coefficient Formula, picture of which is attached. X and Y represent two different set of datas.

<u>Note: </u>

The other terms are defined as :

Coefficient of Determination : Square of correlation between predicted scores and actual scores. It usually ranges from 0 to 1 .

Standard deviation of estimate : represents the amount of variation among a set of values .

Standard Error of estimate : It is the measure of dispersion of sample means around population means.

6 0
3 years ago
A globe is a map of Earth shaped as a sphere. What is the volume, to the nearest tenth, of a globe with a diameter of 16 inches?
torisob [31]

Answer:

Step-by-step explanation:

2144.6 in. sq.

5 0
3 years ago
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