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lesya [120]
3 years ago
9

Can someone please take me step by step to find x?

Mathematics
2 answers:
Aleksandr [31]3 years ago
8 0
-(7x + 4)- 2x + 2 = 52

Distribute the negative sign:
-7x -4 - 2x + 2 = 52

Combine like terms:
-9x - 2 = 52

Add 2 to both sides:
-9x = 54

Divide by -9:
x = -6

Answer: x = -6
klemol [59]3 years ago
7 0
1. distribute the negative sign it become -7x - 4
2. combine like term
3. you would know what to do from there ;)
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Find x. Pleaseee help
hoa [83]

Answer:

x=35

Step-by-step explanation:

plz mark me as brainliest

4 0
3 years ago
A highway map of Ohio has a coordinate grid superimposed on top of the state. Springfield is at point (1, –4) and Columbus is at
Vedmedyk [2.9K]
The midpoint, where the rest area is, will just be the average of the coordinates of Springfield and Columbus.

Rest Area=((1+7)/2, (-4+1)/2)

Rest Area=(4, -1.5)

The distance between the two cities can be found using the Pythagorean Theorem, which used in the manner is often referred to as the "distance" formula between two points.

d^2=(x2-x1)^2+(y2-y1)

d^2=(7-1)^2+(1--4)^2

d^2=36+25

d^2=61

d=√61  and we are told that each unit is equal to 5.38mi so the distance from Springfield to Columbus is:

D=5.38√61 mi

D≈42.02mi  (to nearest hundredth of a mile)
3 0
3 years ago
Given the diagram below, what is cos(45*)? <br><br> A.<br><br><br> B.<br><br><br> C.<br><br><br> D.
alina1380 [7]

Answer:

The answer is option B

Step-by-step explanation:

To find cos 45° we must first find the adjacent and the hypotenuse

Let the adjacent be x

Let the hypotenuse be h

To find the adjacent we use tan

tan ∅ = opposite / adjacent

From the question

the opposite is 9

So we have

tan 45 = 9 / x

x tan 45 = 9

but tan 45 = 1

x = 9

Since we have the adjacent we use Pythagoras theorem to find the hypotenuse

That's

h² = 9² + 9²

h² = 81 + 81

h² = 162

h = √162

h = 9√2

Now use the formula for cosine

cos∅ = adjacent / hypotenuse

The adjacent is 9

The hypotenuse is 9√2

So we have

cos 45 = 9/9√2

We have the final answer as

<h3 /><h3>cos 45 = 1 / √2</h3>

Hope this helps you

3 0
3 years ago
<img src="https://tex.z-dn.net/?f=-x%20-3%20%5C%20%20%5Ctextless%20%5C%20%200" id="TexFormula1" title="-x -3 \ \textless \ 0"
VladimirAG [237]
- x < 3

Answer:
x < -3
8 0
3 years ago
Y is directly proportional to X^2<br> If y = 45 when x = 3 find<br> y when x = 5
postnew [5]

Answer:

Y = 125

Step-by-step explanation:

Y is directly proportional to X^2

Mathematically,

Y ∝ X²

Y = kX²

Where k = Constant of Proportionality

Step 1

If y = 45 when x = 3

We solve for k

Y = kX²

k = Y/X²

k = 45/3²

k = 45/9

k = 5

Step 2

find y when x = 5

Y = kX²

k = 5, X = 5

Hence,

Y = 5 × 5²

Y = 125

6 0
3 years ago
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