3 years ago

HELP PLEASE DUE IN 4 MINUTES

Mathematics

1 answer:

pogonyaev3 years ago

8 0

Answer:

I think the mean is 1

Step-by-step explanation:

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Solve the system by using the combination method 4x+9y=7 4x-9y=9

harkovskaia [24]

The two original functions are 4x+9y=7 and 4x-9y=9
To use the combination method, add all the values of the two equations together to cancel out one of the variables
4x+4x+9y-9y=7+9
8x=16
8x/8=16/8
x=2
4(2)+9y=7
8+9y=7
8-8+9y=7-8
9y=-1
y=- $\frac{1}{9}$

7 0

3 years ago

(197)^2-(97)^2 evaluate without using calculator or table

Bezzdna [24]

Answer:

29400

Step-by-step explanation:

$formula: \\ {a}^{2} - {b}^{2} = (a + b)(a - b) \\ ( {197)}^{2} - ( {97)}^{2} \\ = (197 + 97)(197 - 97) \\ = 294 \times 100 \\ = 29400 \\$

3 0

3 years ago

Solve for x. 2(4x− 9) = 5(x − 4)

cluponka [151]

Answer:

2(4x− 9) = 5(x − 4)

=>8x- 18= 5x-20

=>8x-5x= -20+18

=>3x = -2

=>x= -2/3

8 0

3 years ago

If you miss the bus, then you will be late to school.

Tpy6a [65]

law of syllogism basically is a=b b=c then a=c

a = miss bus

c= detention

so if you miss the bus you get detention

4 0

3 years ago

Read 2 more answers

Write down the equation of a line that is parallel to the x-axis and passes through (-2, 5).

Rudiy27

Answer:

y = 5

Step-by-step explanation:

If the line is parallel to the x-axis, regardless of the value of x, the value of y must remain at y = 5. Therefore, x can be any number, (x,5), including -2.

8 0

3 years ago