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Jobisdone [24]
3 years ago
9

Help me now!! 16 points!!

Mathematics
1 answer:
stellarik [79]3 years ago
6 0

Answer:

it's the fourth one

Step-by-step explanation:

Solve all the problems using exponent rules and the last one equals 632

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4. Find the value of x in the equation 9 − 4x = 57. A. 16.5 B. −16.5 C. −12 D. 12
guajiro [1.7K]

Answer:

C. −12

Step-by-step explanation:

9 − 4x = 57

Subtract 9 from each side

9-9-4x= 57-9

-4x = 48

Divide by -4 on each side

-4x/-4 = 48/-4

x = -12

5 0
4 years ago
The formula is:<br> Y= mx+b
Aliun [14]
<h2>                             Question 1</h2>

Answer:

The graph is showing the story.

Step-by-step explanation:

Victoria is on the 13th page of the book, she reads 3 pages after every next hour.

After 1st hour she has read = 13 + 3 = 16

As she reads 3 pages after every next hour.

so

After 2nd hour she has read = 16 + 3 = 19

After 3rd hour she has read = 19 + 3 = 22

After 4th hour she has read = 22 + 3 = 25

After 5th hour she has read = 25 + 3 = 28

So the graph is showing this phenomena.

<h2>                          Question 2</h2>

Answer:

The equation that would generate this graph and table would be:

  • y=\:3x+13

Step-by-step explanation:

Given the slope-intercept form of the equation of the line

y=\:mx+b

Taking any two points

(1, 16)

(2, 19)

\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(1,\:16\right),\:\left(x_2,\:y_2\right)=\left(2,\:19\right)

m=\frac{19-16}{2-1}

m=3

Plugging any point, let say (1, 16), and m = 3 in the slope-intercept form to find the value of b (y-intercept).

y=\:mx+b

16=\:3\left(1\right)+b

\mathrm{Switch\:sides}

3\left(1\right)+b=16

\mathrm{Remove\:parentheses}:\quad \left(a\right)=a

3\cdot \:1+b=16

\mathrm{Multiply\:the\:numbers:}\:3\cdot \:1=3

3+b=16

\mathrm{Subtract\:}3\mathrm{\:from\:both\:sides}

3+b-3=16-3

b=13

Thus the equation that would generate this graph and table is:

y=\:mx+b

  • m = 3
  • b = 13

y=\:3x+13

Therefore, the equation that would generate this graph and table would be:

  • y=\:3x+13
6 0
4 years ago
6
Helga [31]

Answer:

  • 8.2 in

Step-by-step explanation:

<u>Volume formula:</u>

  • V = πr²l

<u>Solving for l:</u>

  • l = V/(πr²)

<u>Length of the given cylinder:</u>

  • l = 1256/(π7²) = 1256/(3.14*49) = 8.2 in rounded
3 0
3 years ago
Read 2 more answers
9/25 of 5kg is equal to ?
Jobisdone [24]

Answer:

1.8 kg

...............

8 0
2 years ago
Read 2 more answers
Factor the quadratic expression as the product of two binomials. X^2-x-42?
kifflom [539]

Answer:

the answer is (x-7)(x+6)

Step-by-step explanation:

3 0
3 years ago
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