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Andreas93 [3]
3 years ago
10

Someone please urgently help me with these two short worded questions! Thanks so much

Mathematics
1 answer:
ahrayia [7]3 years ago
8 0

Answer:

6. 7x + 3 = 3x; x = -3/4

7. x - 5 = 3x - 9; x = 2

Step-by-step explanation:

6. 7x + 3 = 3x

Subtract 3x from both sides.

7x + 3 - 3x = 3x - 3x

4x + 3 = 0

Subtract 3 from both sides.

4x + 3 - 3 = 0 - 3

4x = -3

Divide both sides by 4.

x = -3/4

7. x - 5 = 3x - 9

Subtract x from both sides.

x - 5 - x = 3x - 9 - x

-5 = 2x - 9

Add 9 to both sides.

-5 + 9 = 2x - 9 + 9

4 = 2x

Divide both sides by 2.

4/2 = (2/2) x

2 = x

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The length of a rectangle is 5 inches more than the width. the perimeter is 30 inches. find the length and the width
xeze [42]

Answer:

Length = 10 inches

Width = 5 inches

Step-by-step explanation:

p = 2w + 2l

l = w + 5

30 = (2w + 2(w + 5))

30 = 4w + 10

20 = 4w

w = 5

l = w + 5

= 5 + 5

= 10

6 0
2 years ago
What is 10 4/5 minus 3 1/2
Oksanka [162]
The answer is 7.3 or in other words 7 3/10

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4 0
4 years ago
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Multiplying a trinomial by a trinomial follows the same steps as multiplying a binomial by a trinomial. Determine the degree and
Veseljchak [2.6K]

Degree = 4

Maximum possible number of terms for = 5

Solution:

Given expression:

\left(x^{2}+x+2\right)\left(x^{2}-2 x+3\right)

To multiply the trinomial by a trinomial:

\left(x^{2}+x+2\right)\left(x^{2}-2 x+3\right)

Multiply each of the first term by the each of the second term.

            =x^{2}(x^{2}-2 x+3)+x(x^{2}-2 x+3)+2(x^{2}-2 x+3)

            =(x^{4}-2 x^3+3x^2)+(x^{3}-2 x^2+3x)+(2x^{2}-4 x+6)

Remove the brackets and arrange the terms with same powers together.

            =x^{4}-2 x^3+x^{3}+3x^2-2 x^2+2x^{2}+3x-4 x+6

            =x^{4}- x^3+3x^2- x+6

The product of the trinomials is x^{4}- x^3+3x^2- x+6.

Degree is the highest power of the variable.

Degree = 4

Maximum possible number of terms for = 5

3 0
3 years ago
Read 2 more answers
PLEASE HELP ME!! I REALLY NEED HELP!!! ASAPPPPP LOTS OF POINTS!!
Oxana [17]
5,6,7,4,3,1,2 

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3 0
4 years ago
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30° + 180° (2n + 1), its radian measure is equivalent to?​
Nuetrik [128]

Answer:

Example: Find the radian measure of the angles −70° and 120°.

Solution: To find the radian measure of −70° we multiply −70 by the conversion factor /180. We get

Similarly, for 120° we obtain

Note that when we write an angle as a fractional amount of , for example 2/3 times  we write the result either as the numerator times  divided by the denominator or as the fraction times . So the two values

are equivalent ways of writing the same number. You will see both methods used in the text and in the exercises.

Example: Find the degree measure of /12.

Solution: The conversion factor for going from radians to degrees is 180/. We get

and so the radian measure of /12 is 15°.

Step-by-step explanation:

7 0
3 years ago
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