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3 years ago

Tim is 3 times as old as chris and is also 14 years older than chris. how old is tim?

Mathematics

1 answer:

Luda [366]3 years ago

7 0

Let y represent Tim's age and let x represent Chris's age.

y=3x

y=x+14

Set the two equations equal to each other:

3x=x+14

Subtract the x from the one side to get it on the other side.

2x=14

Divide by 2 on both sides

14/2=7

x=7

Plug it back in and see if it works:

y=3(7)=21

Other equation:

7+14=21

x=7

y=21

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Determine any data values that are missing from the table, assuming that the data represent a linear function.

Varvara68 [4.7K]

Answer:

c. 14

Step-by-step explanation:

Let the missing y value be y2.

If the data represent a linear function, then:

$\frac{6 - 2}{2 - 1} = \frac{y_2 - 6}{4 - 2}$

$\frac{4}{1} = \frac{y_2 - 6}{2}$

$4 = \frac{y_2 - 6}{2}$

Multiply both sides by 2

$4 \times 2 = \frac{y_2 - 6}{2} \times 2$

$8 = y_2 - 6$

Add 6 to both sides

$8 + 6 = y_2 - 6 + 6$

$14 = y_2$

The missing value is 14

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3 years ago

Find the area of the composite shape:

Stells [14]

Answer:

5×14×14×4=3,920 cm

Step-by-step explanation:

Multiply all numbers to find the area.

5 0

3 years ago

Complete the following statement: f(3)=_____

Lesechka [4]

Using this equation, f(3) = 23.

In order to find the value of f(3), we need to take the f(x) equation and put 3 everywhere we see x. Then we follow the order of operations to solve. So, let's start with the original.

f(x) = 2x^2 + 5sqrt(x - 2)

Now place 3 in for each x.

f(3) = 2(3)^2 + 5sqrt(3 - 2)

Now square the 3.

f(3) = 2(9) + 5 sqrt(3 - 2)

Do the subtraction inside of the parenthesis.

f(3) = 2(9) + 5sqrt(1)

Take the square root

f(3) = 2(9) + 5(1)

Multiply.

f(3) = 18 + 5

And add.

f(3) = 23

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4 years ago

What is the value of this expression when b=5 <br> 6(2b-4)

REY [17]

Remember distributive property

6(2b-4)
6(2(5)-4)
6(10-4)
6(6)
36

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3 years ago

Select the best attribute for the angle pair formed by two parallel lines intersected

Inga [223]

Answer:

Corresponding Angles sum to 180°

Step-by-step explanation:

If a pair of parallel lines is cut by transversal that is not perpendicular to the parallel lines as shwon in the figures (attached below), then;

Four angles are acute, and four are obtuse.

All four acute angles are equal: 2=3=6=7
All four obtuse angles are equal: 1=4=5=8
The sum of acute and obtuse angles is 180: for example, 1+2=180, 3+4=180, 5+6=180, 7+8=180

so the best attribute for the angle pair formed by two parallel lines intersected by a transversal is that Corresponding Angles sum to 180°.

7 0

3 years ago