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Licemer1 [7]
2 years ago
12

Wich expression equivalent to 4 (x + 1) +7 (x+3)

Mathematics
2 answers:
solniwko [45]2 years ago
4 0

Answer:

11x + 25

Step-by-step explanation:

4x + 4 + 7x + 21

dangina [55]2 years ago
3 0

Answer:

11x + 25

Step-by-step explanation:

When we distribute everything, we get 4x + 4 + 7x + 21. Adding the like terms, we get 11x + 25. Hope this helps!

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A linear model is given for the data in the table: y=1.25x+2.
Fed [463]

Answer:

Option A

Step-by-step explanation:

Given that A linear model is given for the data in the table: y=1.25x+2.

Let us write observed values for each x and also the predicted values as per equation.

x            2     3        4      8    10      16    20    24    Total

y((O)      3      4        7     12   16      22   28    30

y(P)     4.5   5.75      7     12   14.5   22   27    32

DEv    1.5    1.75      0       0     1.5     0      1       2     7 75

where y(0) represents observed y or y in the table given

y(P) gives values of y predicted as per the equation 1.25x+2

Dev represents the absolute difference

Hence answer is option

A.7.75

8 0
3 years ago
What is the value of the expression 3y−zy+5z3y−zy+5z when y = 6 and z = 2?
WARRIOR [948]
The valve of the expression would be 184
6 0
3 years ago
Read 2 more answers
How do I find the surface area of a cone
katen-ka-za [31]
Find circumference and height of cone and multiply
8 0
2 years ago
In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35. The followi
Naddika [18.5K]

Answer:

112

Step-by-step explanation:

Given that in a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35.

Age 18: average score = 100, SD = 15

Age 35: average score = 100, SD = 15, r = 0.80

Let us obtain regression equation of y on x.

Let y be the scores at age 35 and x at age 18

Slope = r(s_y/s_x) = 0.8(\frac{15}{15} )=0.80

The line passes through (100,100) being average of x and y

Hence regression line would be

y-100=0.8(x-100)\\y = 0.8x+20

a) Here given that x =115

Hence y=0.80(115)+20\\=112

the average score at age 35 for all the individuals who scored 115 at age 18, would be 112.

b) Prediction also would be the same 112.

5 0
3 years ago
the scale of a model train is 1 inch to 13.5 feet. One of the cars of the model train is 5 inches long. What is the lenght, in f
Dominik [7]

Answer:

67.5

Step-by-step explanation:

6 0
3 years ago
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