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vredina [299]
3 years ago
5

If f(x) = x2 + 7, what is the value of f(4)?​

Mathematics
1 answer:
kogti [31]3 years ago
3 0

Answer:

If it is f(4) it is 15

Step-by-step explanation:

f(x)=x2+7

f(4)=(4)2+7

f(4)=8+7

f(4)=15

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1. Solve for x:<br> 3(2x – 1) – 10 = 8 + 5x<br> A. -7<br> B. -3<br> C. 19<br> D. 21
user100 [1]

Answer:

(D) 21

Explanation:

3(2x−1)−10=8+5x

Step 1: Simplify both sides of the equation.

3(2x−1)−10=8+5x

(3)(2x)+(3)(−1)+−10=8+5x(Distribute)

6x+−3+−10=8+5x

(6x)+(−3+−10)=5x+8(Combine Like Terms)

6x+−13=5x+8

6x−13=5x+8

Step 2: Subtract 5x from both sides.

6x−13−5x=5x+8−5x

x−13=8

Step 3: Add 13 to both sides.

x−13+13=8+13

x=21

3 0
4 years ago
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What is the diameter of a circle with circumference<br> C= 191 ? Leave answers in exact form.
lesantik [10]

Answer:

Diameter=60.79

Step-by-step explanation:

Solution,\\ Circumference(C)=191\\As,\\Circumference=\pi d\\191=\pi d\\\frac{191}{\pi } =d\\d=60.79718826

8 0
3 years ago
Which line from L, M and N is the line of best fit for this scatter plot?
docker41 [41]

Answer:

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4 0
3 years ago
The workers in a senate office said that they received about 700 phone calls from voters last week. Which could be the number of
Nataly [62]

Answer:

see below

Step-by-step explanation:

Any number between 650 and 749, 650 and 749 are included as well

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8 0
3 years ago
Which system of equation should you use to solve this problem
Alex17521 [72]

Last option is the correct answer.

Step-by-step explanation:

Given that

Let x stand for the solution a and y stand for the solution B

So,

According to statement that

30 gallons have to be made

x+y=30

Solution A contains 29 percent bromine => 0.29x

Solution B contains 53 percent  =>0.53y

And the mixture of 30 gallons contains 45% bromine

0.29x+0.53y=30*0.45\\0.29x+0.53y=13.5

Following equations will be used for solving the problem

x+y = 30\\0.29x+0.53y=13.5

Hence,

Last option is the correct answer.

Keywords: Equations, Variables

Learn more about linear equations at:

  • brainly.com/question/10941043
  • brainly.com/question/10978510

#LearnwithBrainly

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