All categories

3 years ago

!!!!!!please solve!!!!!

Mathematics

2 answers:

Vesna [10]3 years ago

4 0

Answer:

1. True

2. True

Step-by-step explanation:

So we are playing with variables here, lets look at 1.

5x + 9 = 29 if x = 4

This means that if x equals 4, would it make the equation true? Let's find out :

Substitute :

5(4) + 9 = 29

20 + 9 = 29

This is true, let's do the same for 2. :

7x - 8 = 13 if x = 3

7(3) - 8 = 13

21 - 8 = 13

This is also true.

Sophie [7]3 years ago

3 0

Answer:

first one x=4

second one x=3

Step-by-step explanation:

You might be interested in

The equation 1/reserve rate= money multiplier shows the relationship between the reserve rate and the money multiplier, regardle

yKpoI14uk [10]

Answer:true

Step-by-step explanation: apex

7 0

3 years ago

Describe the transformation of the parent function f(x)=x^2 to 1/2 (x+1)^2-5

Eddi Din [679]

The parent function was moved left one and down five. It also opened up due to the 1/2

7 0

3 years ago

Options are 70 75 85 or 100

lyudmila [28]

Check the picture below

3 0

3 years ago

Solve for all values of x by factoring.<br><br> X^2-x+1=3

AlladinOne [14]

Answer:

x = 2, -1

Step-by-step explanation:

x² - x + 1 = 3

- 3 -3

x² - x - 2 = 0

(x -2)(x + 1)

3 0

3 years ago

Read 2 more answers

Solve 2x2 + 3x = −8.

77julia77 [94]

Answer:

Final answer iis choice B) $x=\frac{-3\pm i\sqrt{55}}{4}$

Step-by-step explanation:

$2x^2 + 3x =-8$

$2x^2 + 3x +8 = 0$

Compare with quadratic equation $ax^2 + bx +c = 0$ , we get:

a=2, b=3, c=8

Now plug these values into quadratic formula:

$x=\frac{-3\pm \sqrt{\left(3\right)^2-4\left(2\right)\left(8\right)}}{2\left(2\right)}$

$x=\frac{-3\pm \sqrt{9-64}}{4}$

$x=\frac{-3\pm \sqrt{-55}}{4}$

$x=\frac{-3\pm i\sqrt{55}}{4}$

Hence final answer iis choice B) $x=\frac{-3\pm i\sqrt{55}}{4}$

5 0

4 years ago