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MissTica
3 years ago
11

Find the value of m .​

Mathematics
1 answer:
kondor19780726 [428]3 years ago
7 0

Step-by-step explanation:

if the 2 matrices are inverse, then their product must be the identity matrix

1 0

0 1

so,

m×3 + 2×-7 = 1

7×3 + 3×-7 = 0

m×-2 + 2×m = 0

7×-2 + 3×m = 1

that means we have to solve only

3m - 14 = 1

3m = 15

m = 5

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Almost done just need to get to 80
Vilka [71]

Answer:

60%

Step-by-step explanation:

6/10 of the shape is green, meaning that it is 60 %.

8 0
3 years ago
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3.5x + 0.8 = 18.24 - 5.9x​
notka56 [123]

Answer:

x=1.85531914

Step-by-step explanation:

5 0
4 years ago
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Which equation can be used to find the answer? Camilla needs $65 for a pair of hiking shoes. She already has $19 saved. How much
r-ruslan [8.4K]
The answer is a. n+19=65 n=46 $46. To find out how much more she needs to save, you would add that amount with 19 to get a total of 65. So your equation would be n+19=65. Then once you have your equation, solve it. Subtract 19 from both sides to get n by itself.
n+19=65
-19 -19
n=46
So your answer for how much more she needs to save is $46.
4 0
4 years ago
Find the equation of the linear function represented by the table below in slope-
Eva8 [605]

Answer:

f(x) = 5x - 5

Step-by-step explanation:

Let the equation of the linear function is,

f(x) = mx + b

Here, m = Slope of the graph

b = y-intercept

Slope of the line passing through (x_1,y_1) and (x_2,y_2) is given by,

m = \frac{(y_2-y_1)}{(x_2-x_1)}

From the table attached,

Slope of the line passing through (2, 5) and (6, 25) will be,

m = \frac{25-5}{6-2}

m = 5

Equation of the linear function will be,

f(x) = 5x + b

Since, a point (10, 45) lies on the function,

45 = 5(10) + b

b = 45 - 50

b = -5

Equation of the linear function will be,

f(x) = 5x - 5

4 0
3 years ago
Race track a has 37,000 more grandstand seats than three times the number of grandstand seats at another race track
kherson [118]

Let x represent the number of grandstand seats on race track #2

The number of grandstand seats on race track #1 =  37,000 + 3x

Total number of seats together = 289,000

So, we can frame the equation as follows:

37,000 + 3x + x = 289,000

4x + 37,000 = 289,000

4x = 289,000-37,000 = 252,000

4x = 252,000

x = 252,000/4

x = 63,000

Number of seats on race track #2= x = 63,000 seats

Number of seats on race track #1 = 37000+3x = 37000+3*63000 = 226,000 seats


3 0
3 years ago
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