The table below shows the U.S. average life expectancy at birth, in years,
in various decades.
Years since
1930
Life
Expectancy at
Birth
10
62.9
68.2
20
69.7
30
70.8
40
73.7
50
75.4
60
77.0
70
80
78.7
Us

Answer:

[tex]t\leq 6.25[/tex] in decimal form

[tex]t\leq \frac{25}{4}[/tex] in fractional form

Step-by-step explanation:

-4 times a number t is greater than or equal to - 25. This is what they mean by at least.

[tex]-4t \geq -25[/tex]

Solve for t.

[tex]t\leq \frac{-25}{-4}[/tex] , we flip the inequality because we are dividing by a negative number.

[tex]t\leq 6.25[/tex]

Answer:

3x^2 + 7x - 18

Step-by-step explanation:

Answer:

n = -35/1301

Step-by-step explanation:

1225n+76n=1301n=-35

n = -35/1301

Answer:

42 minues 5 seconds to do 17 laps.

Step-by-step explanation:

it takes her 2 minuetes and 50 seconds to do 1 lap if you multiply 2.5x17=

42 munites and 5 secondesto do 17 laps

Answer:

It would take 42.5 min

Step-by-step explanation:

4/10 = 2.5(unit rate for every lap it takes 2.5 min)

17 x 2.5 = 42.5

Answer:

PLZ MARK BRAINLIEST

The answer is 7.5 miles or 7 1/2.

Step-by-step explanation:

1 1/2 times 5= 7 1/2 or 7.5 miles

Answer:

7 1/2 min

Step-by-step explanation:

1.5 x 5 = 7.5 She ran 1 mile in 7 1/2 min

Responder:

3, 5, 7

Explicación paso a paso:

Sean enteros impares consecutivos:

x, x + 2, x + 4

3 (x + 2) = (x + x + 4) + 5

3x + 6 = (2x + 4 + 5)

3x + 6 = 2x + 9

3x - 2x = 9 - 6

x = 3

Por lo tanto,

x = 3; (x + 2) = 3 +2 = 5; x + 4 = .3 + 4 = 7

(3, 5 y 7)

9514 1404 393

Answer:

  y = 2x + 4

Step-by-step explanation:

You have the graph, so you can read the slope and y-intercept from it. The line goes up 2 units for each unit to the right, so the slope is ...

  slope = rise/run = 2/1 = 2

The y-intercept is where the graph crosses the y-axis, at y=4.

The slope-intercept form of the equation for a line is ...

  y = mx + b

where m is the slope (2) and b is the y-intercept (4). Your equation is ...

  y = 2x +4

Answer: First blank; -x

second; -2

Step-by-step explanation:

Answer:

-2, -1, 1, 3

Step-by-step explanation:

Range is the amount so that is why it is the answer

Answer:

c

Step-by-step explanation:

2/3 converts to 0.66666667, 66.67%

1/4 converts to 0.25 , 25%

0.06 converts to 6%

So the order from least to greatest would be 0.06 , 1/4 , 29% , 2/3

Answer:

(-4,-1)

All you have to do to find it is subtract x by 5 and subtract y by 5. :)

Answer:

map

Step-by-step explanation:

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

With the regrouping strategy, we get,

50 x 10; 7 x 10; 50 x 8; 7 x 8

Option B is the correct answer.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

57 x 18

This can be written as,

(50 + 7) x (10 + 8)

Simplifying we get,

(50 x 10) + (50 x 8) + (7 x 10) + (7 x 8)

Now,

With the regrouping strategy, we get,

(50 x 10)

(50 x 8)

(7 x 10)

(7 x 8)

Thus,

With the regrouping strategy, we get,

50 x 10; 7 x 10; 50 x 8; 7 x 8

Option B is the correct answer.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

Answer:The slope is 6/7

Step-by-step explanation:

when finding the slope you will need to move the 6x to the other side of the equation by subtracting which gives you 7y=14-6x and all that is left is to divide by 7 which gives y=14-6/7y

Answer:

6x - 7y = 14

⇔ 6x - 14 = 7y

⇔ 6/7.x - 2 = y

=> the slope is 6/7

Step-by-step explanation:

Answer:

x = 3,2

Step-by-step explanation:

solve for x by finding a,b,c and then apply the quadratic formula.

Answer:x

=

−

3

x

=

−

2

Explanation:

The quadratic formula is:

⇒

x

=

−

b

±

√

b

2

−

4

a

c

2

a

for a quadratic of the form

a

x

2

+

b

x

+

c

.

We have

a

=

1

,

b

=

5

, and

c

=

6

.

x

=

−

5

±

√

5

2

−

4

(

1

)

(

6

)

2

(

1

)

x

=

−

5

±

√

25

−

24

2

x

=

−

5

±

√

1

2

x

=

−

5

±

1

2

Hence,

x

=

−

6

2

=

−

3

and

x

=

−

4

2

=

−

2

I'm not sure why you wanted to use the quadratic formula, but you could just factor the quadratic:

x

2

+

5

x

+

6

=

(

x

+

3

)

(

x

+

2

)

=

0

x

+

3

=

0

→

x

=

−

3

and

x

+

2

=

0

→

x

=

−

2

Step-by-step explanation:

Answer:

4x+9

Step-by-step explanation:

x-4 +3x+5

x+3x+5+4=4x+9

Answer:

The slope between (5, 13) and (9, 10) is:

Step-by-step explanation:

Given the points

Finding the slope between (5, 13) and (9, 10)

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]m=\frac{10-13}{9-5}[/tex]

[tex]m=-\frac{3}{4}[/tex]

Therefore, the slope between (5, 13) and (9, 10) is:

Answer:

Any line with a slope of 8 is parallel to y = 8x + 11.  Some examples are:

y = 8x + 5

y = 8x + 1000

y = 8x +9

It doesn't matter what the y-intercept as long as the slope remains the same for a parallel line.

Answer:

Like the other person said, any line that has the same slope (8) will be parallel.

Step-by-step explanation:

Answer:

Step-by-step explanation:

5x+9y=-3             Multiply both sides by 8

40x+72y=-24

-53x-8y=-3  Multiply both sides by 9

-477x -72y= -27

sum the equations vertically to eliminate one variable  

40x+72y= -24

-477x-72y= -27       (the y cancels out )

-477x =-51                (-24 + -27=-51)

-477x=-51 / -477       divide both sides by -477

x =51/437

5x 51/437=9y= -3   substitute the value of x

y= -174 /437

(x,y) = (51/437,  -174/437)

Answer:

What do you mean

Step-by-step explanation:

Answer:

matters

Step-by-step explanation:

if sam doesnt want his dad to spend a lot of money on him then 1/3

but if sam wants to pay less then 1/2

1/2 is more then 1/3

Answer:

Ashley = 79

Step-by-step explanation:

[tex]Average=\frac{Carla+Bev+Ashley}{3}=78\\\\\frac{80+75+Ashley}{3}= 78 \\\\\frac{155+Ashley}{3}=78\\\\\frac{155+Ashley}{3}*\frac{3}{1} =78*3\\\\155+Ashley=234\\[/tex]

Subtract 155 from both sides;

Ashley = 79

Let x be the number we are searching for.

(3/4)x = 1/10

Answer:

2.) undefined slope 3.) zero slope (i'm not sure what 1 and 4 are, sorry!)

Step-by-step explanation:

undefined slope has the same x-coordinate and the denominator becomes 0. it also is a vertical line. for a zero slope, it has the same y-coordinate and the numerator is 0. this is a horizontal line. *this is my first response so if i am wrong, that is embarrassing*

Answer:

4 slices.

Step-by-step explanation:

5 x 8 = 40. 40 slices of pizza divded by 2 since 50% = 2.

20 slices, 20% of 20 slices or 20 in general is 4

Answer:

0.0009

Step-by-step explanation:

Let us write the factors of 100. A factor of 100 can only be a multiple of five if it is divisible by five.

Factors of 100 ⇒ numbers divisible by 100 ⇒ 1, 2, 4, 5, 10, 20, 25, 50, 100

When checking each factor of 100;

⇒ Five factors are multiples of 5.

Therefore, five factors of 100 are multiples of 5.

Answer:

A.41

Step-by-step explanation:

Answer:

The value of x is 3

Step-by-step explanation:

∵ Quadrilateral ABCD is congruent to quadrilateral JKLM

∴ AB = JK and BC = KL

∴ CD = LM and AD = JM

∵ BC = 8x + 7

∵ KL = 31

∵ BC = KL

→ Equate their right sides

∴ 8x + 7 = 31

→ Subtract 7 from both sides

∵ 8x + 7 - 7 = 31 - 7

∴ 8x = 24

→ Divide both sides by 8 to find x

∴ [tex]\frac{8x}{8}[/tex] = [tex]\frac{24}{8}[/tex]

∴ x = 3

∴ The value of x is 3

Answer:B  i think......

Step-by-step explanation:

Answer: It's y>-2x+2