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2 years ago

13

Ms. Larson was driving home from a vacation. At noon, she was 120 miles from home. Half an hour later, she was 98 miles from hom

e. If Ms. Larson traveled at a constant rate during this time, what was her speed?

1 answer:

melomori [17]2 years ago

5 0

Answer: her speed was “44 miles per hour”

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X^2 - 4x - 12 = 0 Factor and solve

maxonik [38]

Ax^2+bx+c=0

find what 2 numbers multiply to get c and add to get b
x^2-4x-12
b=-4
c=-12

x times y=-12
x+y=-4
factor -12
-1, 12
-2,6
-3,4
add
-1+12=11
-2+6=4
-3+4=1

the one that works is -2 and 6 because they can be reversed to make -6 and 2 which multiploy to get -12 and add to get -4 so

split it up into

x^2-4x-12=(x-6)(x+2)=0
set each to zero
x-6=0
add 6
x=6

x+2=0
subtract 2
x=-2

x=6 or -2

7 0

3 years ago

What is x=60 and y=18? Using Constant of Proportionality.

Westkost [7]

Answer:y/x= 18/16 1 1/8

Step-by-step explanation:

7 0

3 years ago

mary is eighteen years older than her son. she was three times as old as he was one year ago.How old are they now?

zimovet [89]

Answer:

<h2>The son is 10 Mary is 28</h2>

Step-by-step explanation:

I hope dis helps

4 0

3 years ago

ABCD diagonals intersect at E. If m∠BAC=4x+5 and m∠CAD=5x-14, then find m∠CAD.

Travka [436]

Answer: m∠CAD = 81°

Step-by-step explanation: <u>Diagonal</u> is a line that unites opposite sides.

ABCD is a prallelogram. One property of diagonal in a parallelogram is it separates the parallelogram in 2 congruent triangles.

The figure below shows ABCD with its diagonals.

Since diagonal divides a parallelogram in 2 congruent triangles, it means the internal angles are also congruent. So

m∠BAC = m∠CAD

4x + 5 = 5x - 14

x = 19

Then, m∠CAD is

m∠CAD = 5(19) - 14

m∠CAD = 81

The angle m∠CAD is 81°.

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2 years ago

Write five next terms:0;1;1;2;3;5;8;13

Iteru [2.4K]

Answer:

it's a(n)=a(n-1)+a(n-2)

this is also known as Fibonacci sequence

0

1

1

2

3

5

8

13

21

34

55

89

144

233

377

610

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2 years ago