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Naddika [18.5K]
4 years ago
14

This is hard for me :(

Mathematics
1 answer:
Luden [163]4 years ago
8 0

Remark

A

You can do the same thing with a program called Desmos. Using this program, I've put A and B (the graphs) in Desmos and attached it to this Answer.

You could just do the same with your graphing calculator if you have one.

The problem is that my graphing calculator won't draw the blue line which is x = - 2

So go to Desmos and put in 2 graphs. the first one is y = - 1/2 x + 3 in red

The second is x =- 2. These are entered on the left of Desmos.

The blue line is x = - 2. You notice that the intersect point is (-2,4). Run your finger straight across until you hit 4. That's all you have to do for the A part.

B

The question has 3 blanks. The first 2 come from the question directions to see if you read those directions. Always a good idea to do that.

first blank  is x = - 2

second blank is x = - 2

Third blank is - 7

The red line is y = 3/2 x - 4

The blue line is x = -2

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A body moves due north with velocity 40 m/s. A force is applied
Tamiku [17]
I don’t know what’s the answer
8 0
3 years ago
Find the values of the variables
ki77a [65]

The values of the variables are k = -6 , w = ± 9 , f = -7

Step-by-step explanation:

To solve these problems we will compare the elements inside the [  ]

[-12 , -w²] = [2k , -81]

[2f , 3] =  [-14 , 3]

That mean:

1. -12 = 2k

2. -w² = -81

3. 2f = -14

∵ 2k = -12

Divide both sides by 2 to find k

∴ k = -6

∵ -w² = -81

Divide both sides by -1

∴ w² = 81

Take √ for both sides

∴ w = ± 9

∵ 2f = -14

Divide bith sides by 2

∴ f = -7

The values of the variables are k = -6 , w = ± 9 , f = -7

Learn more:

You can learn more about simple equation in brainly.com/question/13113987

#LearnwithBrainly

8 0
3 years ago
Tina wants to save money for school. tina invests $400 in an account that pay an interest rate of 7.5%. How many years will it t
joja [24]
Here's the given:
P=$400
i=7.5%
A=$8500

The formula used for this problem is:
A = P(1+i)^t

Manipulating the equation to arrive at t, we have:
t = ln(A/P) / ln(1+i)

Plugging in values:
t = ln($8500/$400) / ln(1+0.075)
t = 42.26 years
6 0
3 years ago
Which one I’ll mark you!!!
alina1380 [7]
LAST ONE and if you solve it it will be 90
8 0
3 years ago
Read 2 more answers
PLEASE HELP I NEED TO KNOW THE (RIGHT) ANSWER ASAP!
shtirl [24]
Triangles are 180 degrees total so 80+40=120, subtract that from 180 and you’ll get B=60
4 0
3 years ago
Read 2 more answers
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