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kobusy [5.1K]
2 years ago
12

Solve the equation 7x-2(x-10)=40

Mathematics
2 answers:
bekas [8.4K]2 years ago
5 0

Answer:

7

−

2

(

−

1

0

)

=

4

0

7x{\color{#c92786}{-2(x-10)}}=40

7x−2(x−10)=40

7

−

2

+

2

0

=

4

0

Step-by-step explanation: therefore your answer would be x=4  

BRAINLIEST PLEASE

mylen [45]2 years ago
3 0

Answer:

x=4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

7x−2(x−10)=40

7x+(−2)(x)+(−2)(−10)=40(Distribute)

7x+−2x+20=40

(7x+−2x)+(20)=40(Combine Like Terms)

5x+20=40

5x+20=40

Step 2: Subtract 20 from both sides.

5x+20−20=40−20

5x=20

Step 3: Divide both sides by 5.

5 divided by 20 = 4

5 divided by 5 =1

x=4

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lesantik [10]
Could you be more clear about the question?

7 0
2 years ago
Which list is in order from least to greatest? 1.94 x 10 1.25x 10.6x109.8.1 x 10 O 1.25x 10-2 194 10*6x10* 8.1 x 10 O 1.25x 10-2
pickupchik [31]

Answer:

(a)\ 1.94 * 10 ^{-5},\ \ 1.25 *10 ^{-2},\ \ 6 *10 ^{4},\ \ 8.1 *10^{4}

Step-by-step explanation:

Given

(a)\ 1.94 * 10 ^{-5},\ \ 1.25 *10 ^{-2},\ \ 6 *10 ^{4},\ \ 8.1 *10^{4}

(b)\ 1.94 * 10 ^{-5},\ \ 6 * 10^4, \ \ 8.1 *10^{4},\ \ 1.25 *10 ^{-2}

(c)\ 1.94 * 10 ^{-5}, \ \ 8.1 *10^{4},\ \ 6 * 10^4,\ \ 1.25 *10 ^{-2}

(d)\ 1.94 * 10 ^{-5},\ \ 1.25 *10 ^{-2},  \ \ 8.1 *10^{4},\ \ 6 * 10^4

Required

Which list is in ascending order

To do this, we analyze each of the options 1 after the other.

(a)\ 1.94 * 10 ^{-5},\ \ 1.25 *10 ^{-2},\ \ 6 *10 ^{4},\ \ 8.1 *10^{4}

Convert each list item to decimal

1.94 * 10 ^-5 = 0.0000194

1.25 *10 ^-2 = 0.0125

6 *10^{4} = 60000

8.1 *10^{4} = 81000

The list is in ascending order because:

0.0000194 < 0.0125 < 60000 < 81000

<em>No need to test other options</em>

5 0
2 years ago
115% of what number is 120?
antiseptic1488 [7]
115% is the same as 1.15
some number = x

115% of some number is 120
1.15 of x is 120
1.15 * x = 120
\frac{1.15*x}{1.15} = \frac{120}{1.15}
x = 104.3478
x ≈ 104.3

Hope this helps! :)
4 0
3 years ago
Read 2 more answers
Solve for x: 3x − 2 &gt; 5x + 10. (5 points)
velikii [3]

Answer:

Option 2.. x > -6

Step-by-step explanation:

3x -5x - 2 > 5x -5x + 10

-2x - 2 + 2 > 10 + 2

-2x/-2 > 12/-2

<u>x > -6</u>

5 0
2 years ago
I NEED THIS RIGHT NOW ASAP PLEASE
nevsk [136]

Answer:

1:4

Step-by-step explanation:

3 0
2 years ago
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