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3 years ago

Someone please help! I'm confused with c and d.

Mathematics

2 answers:

kozerog [31]3 years ago

6 0

Answer:

The phrase which matches the algebraic expression 3(x + 7) + 10 is:

Three times the sum of x and seven plus ten

Step-by-step explanation:

We have to find the phrase which matches the algebraic expression:

3(x + 7) + 10

3(x+7) means three times the sum of x and seven

So,

3(x+7)+10 means three times the sum of x and seven plus ten

Hence,

The phrase which matches the algebraic expression 3(x + 7) + 10 is:

Three times the sum of x and seven plus ten

Karo-lina-s [1.5K]3 years ago

5 0

It would be 3 times the sum of x and seven plus 10. This is because first you would would add 7+x (7x) and multiply it by 3. And then add on 10.

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Consider 8x2 - 48x = -104.

ki77a [65]

Answer:

$3+ 2\mathbf{i}$

$3- 2\mathbf{i}$

Step-by-step explanation:

<u>Quadratic Equation Solving</u>

We have the equation:

$8x^2-48x=-104$

Divide by 8:

$x^2-6x=-13$

Now complete the squares so the left side is a perfect square of a binomial:

$x^2-6x+9=-13+9=-4$

Factoring the perfect square:

$(x-3)^2=-4$

Taking the square root:

$x-3=\sqrt{-4}$

The square root of a negative number is an imaginary number:

$x-3=\pm 2\mathbf{i}$

Solving for x:

$x=3\pm 2\mathbf{i}$

The solutions are:

$3+ 2\mathbf{i}$

$3- 2\mathbf{i}$

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tankabanditka [31]

Answer: 9

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3 years ago

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Which statement describes the first step to solve the equation by completing the square?

BabaBlast [244]

Take 16x divide it by 2 and square it. 16/2= 8. 8^2= 64. So, the first step will be to add 64 to both sides.

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3 years ago

Rewrite 79/10 as a mixed number

Artemon [7]

79 / 10 as a mixed number is 7 and 9/10

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Yoga classes are offered 2 days a week for 6 weeks at both the community center and the local gym. The cost for the classes at t

s344n2d4d5 [400]

Regina can take yoga classes at community center as it would cost her less money.

Step-by-step explanation:

No. of classes per week = 2

Classes in 6 weeks = 2*6 = 12 classes

Cost of classes at community center = $72

Additional one time fee = $12

Total cost at community center = 72+12 = $84

Cost per class at local gym = $8

Cost of 12 classes = 12*8 = $96

Regina can take yoga classes at community center as it would cost her less money.

Keywords: addition, multiplication

Learn more about addition at:

#LearnwithBrainly

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3 years ago