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Delvig [45]
4 years ago
6

Solve for x. Write both solutions, separated by a comma.7x^2-4x-3=0

Mathematics
1 answer:
daser333 [38]4 years ago
8 0

Answer:

x = -3/7   x=1

Step-by-step explanation:

7x^2-4x-3=0

Factor

(7x+3)(x-1)=0

Using the zero product property

7x+3 =0  x-1 =0

7x = -3   x=1

x = -3/7   x=1

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What is the image of the point (4,7) after a reflection about the line y = 4.?
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Step-by-step explanation:

See attachment courtesy of Desmos.

8 0
3 years ago
Two supplementary angles are in the ratio of 31:5 find angles​
ad-work [718]

Answer:

The angles are <u>155°</u> and <u>25°</u>.

Step-by-step explanation:

Given:

Two supplementary angles are in the ratio of 31:5.

Now, to find the angles.

The sum of two supplementary angles = 180°

Let the ratio of the angles be 31x\ and\ 5x.

So, according to question:

31x+5x=180\°

36x=180\°

<em>Dividing both sides by 36 we get:</em>

x=5

So, 31x=31\times 5=155\°.

And, 5x=5\times 5=25\°.

Therefore, the angles are 155° and 25°.

7 0
3 years ago
8n + 12 - 5n = 21<br> n=?
insens350 [35]

Answer:

n=3

Step-by-step explanation:

Simplifying

8n + 12 + -5n = 21

Reorder the terms:

12 + 8n + -5n = 21

Combine like terms: 8n + -5n = 3n

12 + 3n = 21

Solving

12 + 3n = 21

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-12' to each side of the equation.

12 + -12 + 3n = 21 + -12

Combine like terms: 12 + -12 = 0

0 + 3n = 21 + -12

3n = 21 + -12

Combine like terms: 21 + -12 = 9

3n = 9

Divide each side by '3'.

n = 3

Simplifying

n = 3

5 0
3 years ago
Read 2 more answers
a number has a 4 in the thousands place the number also has a digit whose value is 10 times the value of the 4 on the thousands
maks197457 [2]
Well I can still answer that question without the following and it will be 44,000
3 0
3 years ago
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