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alexira [117]
3 years ago
9

The sum of 1 and 7 times a number is 64. write and solve an equation to determine the number. select the solution and graph that

represents the number
x=4

x=6

x=7

x=9
Mathematics
2 answers:
N76 [4]3 years ago
8 0

Answer:

<em>x = 9</em>

Step-by-step explanation:

Let the number be x.

7 times the number is 7 times x, or 7x.

The sum of 1 and 7 times a number is 7x + 1.

That sum equals 64, so we set the sum equal to 64, and we solve for x.

7x + 1 = 64

Subtract 1 from both sides.

7x = 63

Divide both sides by 7.

x = 9

vichka [17]3 years ago
3 0

x = 8, 1 + 7 +8 and 8 x 8 equals 64. good luck!

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according to the fundamental theorem of algebra how many roots exits for the polynomial function. f(x)=8x^7-x^5+x^3+6
algol13

Answer:

The Fundamental Theorem of Algebra (FTOA) tells us that any non-zero polynomial in one variable with complex (possibly real) coefficients has a complex zero.

A straightforward corollary, often stated as part of the FTOA is that a polynomial in a single variable of degree  

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To see that the corollary follows, note that if  

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Discriminants

If you want to know how many real roots a polynomial with real coefficients has, then you might like to look at the discriminant - especially if the polynomial is a quadratic or cubic. Ths discriminant gives less information for polynomials of higher degree.

The discriminant of a quadratic  

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Δ

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The discriminant of a cubic  

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Step-by-step explanation:


3 0
3 years ago
How do you skip the 7th grade?
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6 0
3 years ago
Read 2 more answers
A round cake has a diameter of 30\text{ cm}30 cm30, start text, space, c, m, end text. Angela places the cake on a circular cake
VLD [36.1K]

Answer:

The circumference of the cake board is <u>35π cm</u>.

Step-by-step explanation:

The question is incomplete, so the complete question is below:

A round cake has a diameter of 30 cm. Angela places the cake on a circular cake board with a diameter 5 cm longer than that of the cake. What is the circumference of the cake board? Give your answer in terms of π.

Now, to find the circumference of the cake board.

As, given diameter of cake = 30 cm.

And diameter of cake board is 5 cm longer than that of the cake.

Thus, the diameter of cake board is:

30\ cm+5\ cm=35\ cm.

So, to find the circumference we need radius, by putting formula:

Radius(r)=\frac{Diameter}{2}

Radius(r)=\frac{35}{2}

Radius(r)=17.5\ cm.

Now, to get the circumference of the cake board we put formula:

Circumference=2\pi r.

Circumference=2\times \pi \times 17.5

Circumference=35\pi \ cm.

Therefore, the circumference of the cake board is 35π cm.

4 0
3 years ago
Lauren says that -3.5 is greater than -3 1/3. Do you agree? Explain.
kirza4 [7]

Answer:

-3\frac{1}{2}

Step-by-step explanation:

-3.5 means -(3 + \frac{1}{2})

In other words, -3.5 = -3\frac{1}{2}

When we draw two numbers -3\frac{1}{3} and -3\frac{1}{2} on a number line, -3\frac{1}{2} comes first from left to right.

We know that all the numbers on a number line from left to right are in increasing order.

Therefore, -3\frac{1}{2} is smaller than -3\frac{1}{3}.

-3\frac{1}{2}

Lauren is not correct.

3 0
2 years ago
(5x to the power of 2 -6x+2)+9x to the power of 2 +10x-7)
xxTIMURxx [149]

Answer:

45x^{4} -4x^{3} -77x^{2} +62x-14

Step-by-step explanation:

Im assuming the question was (5x^{2} -6x+2)(9x^{2} +10x-7) if thats not the case then im wrong

6 0
2 years ago
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