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3 years ago

How is it looking for and what are the steps

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

3 0

The model says a=.25t+29
a) since 1995 is 25 years after 1970 we have
a=.25*25+29=6.25+29=35.25 yrs old
b) since 2015 is 45 yrs since 1960 we have
a=.25*45+29=11.25+29=40.25, or 40.3 rounded to the nearest tenth

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Evaluate 20/6 - 2/3. 2 1/6, 2 2/3, 3 1/3, 3 2/3

N76 [4]

Answer:

Step-by-step explanation:

20/6 - 4/6= 16/6= 2 4/6= 2 2/3

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3 years ago

You picked one marble out of a bag that contains 6 red marbles, 5 white marbles, and 3 blue marbles. Find p(red and blue).

Tcecarenko [31]

Answer: p=9
explanation: 6 reds + 3 blues = 9.

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3 years ago

Write an equation of the perpendicular bisector of the line segment whose endpoints are (−1,1) and (7,−5)

icang [17]

The equation is $y = \frac{3}{2} x - \frac{11}{2}$

Explanation:

We have to first find the mid-point of the segment, the formula for which is

$(\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2} )$

So, the midpoint will be $(\frac{-1+7}{2} , \frac{1-5}{2} )\\\\$

= $(3,-2)$

It is the point at which the segment will be bisected.

Since we are finding a perpendicular bisector, we must determine what slope is perpendicular to that of the existing segment. To determine the segment's slope, we use the slope formula $\frac{y_2-y_1}{x_2-x_1}$

The slope is $\frac{-5-1}{7+1}$ = $-\frac{2}{3}$

Perpendicular lines have opposite and reciprocal slopes. The opposite reciprocal of $-\frac{2}{3}$ is $\frac{3}{2}$

To write an equation, substitute the values in y = mx + c

WHere,

y = -1

x = 3

m = 3/2

Solving for c:

$-1 = \frac{3}{2} X 3 + c\\\\-1 = \frac{9}{2}+c\\ \\c = \frac{-2-9}{2} \\\\c = \frac{-11}{2}$

Thus, the equation becomes:

$y = \frac{3}{2} x - \frac{11}{2}$

7 0

3 years ago

what is an equation to represent for (Andre withdrew spending money from his checking account that initially had $982. What was

Paul [167]

Answer:

The Answer is w - 982 = 922 because it whatever money he took from the 982 lead to 922

Step-by-step explanation:

6 0

2 years ago

PLEASE HELLLP!!!!! If x+7=2y and y=2x−1, what is the value of y? (NOT 13)

oee [108]

Answer:

Step-by-step explanation:

x+7=2y

Subtract 7 from both sides

x=2y-7

2y-7=x

Multiply both sides by 2

4y-14=2x

y=2x−1

Add 1 to both sides

y+1=2x

Combine equations:

y+1=4y-14

Add 14 to both sides

y+15=4y

Subtract y from both sides

15=3y

3y=15

Divide both sides by 3

y=5

The answer is (C) 5.

5 0

3 years ago