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Flura [38]
3 years ago
15

Can I please have help on 9-11?

Mathematics
1 answer:
inna [77]3 years ago
7 0

9) -2
10) 8
11) $3.17, y= 0.17x+3
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Please hurry I will mark you brainliest
Slav-nsk [51]

Step-by-step explanation:

Let grandson's age be x.

Let grandpa's age be y {equation : y = 8+5x}

so,

x + y = 88

or, x + 8+ 5x = 88 (substituting the value of y)

or, 6x + 8 =88

or, 6x = 88-8

or, 6x = 80

or, x = 80/6

so, x = 13.33

so grandson's age = 13.33

grandpa's age = 8 + 5x = 8 + (5×13.33) = 74.65 yrs

7 0
3 years ago
Write an algebraic equation that models the following statement.
8_murik_8 [283]
2(x +4)-6(q/9)

The slash represents a division sign.
5 0
2 years ago
57.63 is the Regular price. The discount is 10%. What;s the sales price.
Kipish [7]
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8 0
3 years ago
canning operation is designed to fill cans with 14.5 oz of ingredients, on average, with a standard deviation of 0.1 oz. Nine ca
Pavlova-9 [17]

Answer:

SE = 0.025

Step-by-step explanation:

We are given;

Sample mean; x¯ = 14.52

Sample standard deviation; s = 0.075

Sample size; n = 9

Now,formula for standard error of sample mean is;

SE = s/√n

SE = 0.075/√9

SE = 0.075/3

SE = 0.025

3 0
3 years ago
∆ABC is reflected about the line y = -x to give ∆A'B'C' with vertices
Ilia_Sergeevich [38]
Since A‘(-1,1) is on the line y=-x, reflecting it about the line doesn't change its coordinate, so A's coordinate is (-1,1). Reflecting B'(-2,1) about y=-x switches both the sign and the number of x and y, so B=(-1,2), and C'(-1,0) becomes C(0,1). Drawing out the graph with the points and the line helps.
4 0
3 years ago
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