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3 years ago

Which phrase best describes the correlation between the variables?

Mathematics

2 answers:

d1i1m1o1n [39]3 years ago

5 0

I would go with C which Is strong Negative
I picked C because its going down in a straight line

SCORPION-xisa [38]3 years ago

4 0

The phrase which best describe the correlation between the variables is (D)- week negative....

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Iel travels 400 miles in 8 hours. What is her rate of change or speed? A) 40 miles per hour B) 50 miles per hour C) 55 miles per

kupik [55]

The speed is 400/8=50mph

3 0

2 years ago

An object is dropped from a small plane. As the object falls, its distance, d, above the ground after t seconds, is given by the

DedPeter [7]

The inequality can be used to find the interval of time taken by the object to reach the height greater than 300 feet above the ground is:

$d = -16t^2 + 1000$

Solution:

The object falls, its distance, d, above the ground after t seconds, is given by the formula:

$d = -16t^2 + 1000$

To find the time interval in which the object is at a height greater than 300 ft

Frame a inequality,

$-16t^2 + 1000 > 300$

Solve the inequality

Subtract 1000 from both sides

$-16t^2 + 1000 - 1000 > 300 - 1000\\\\-16t^2 > -700$

$16t^2 < 700\\\\Divide\ both\ sides\ by\ 16\\\\t^2 < \frac{700}{16}\\\\Take\ square\ root\ on\ both\ sides\\\\t < \sqrt{\frac{700}{16}}\\\\t < \pm 6.61$

Time cannot be negative

Therefore,

t < 6.61

And the inequality used is: $-16t^2 + 1000>300$

6 0

3 years ago

(x+7)^2+9=0 Find x with quadratics

Ne4ueva [31]

Answer:

x = -7 ±3i

Step-by-step explanation:

(x+7)^2+9=0

Subtract 9 from each side

(x+7)^2+9-9=0-9

(x+7)^2=-9

Take the square root of each side

sqrt((x+7)^2) = ±sqrt(-9)

We know sqrt(ab) = sqrt(a) sqrt(b)

x+7 = ±sqrt(-1) sqrt(9)

We know that sqrt(-1) is the imaginary number i

x+7 = ±i *3

x+7 =±3i

Subtract 7 from each side

x+7-7 = -7 ±3i

x = -7 ±3i

6 0

3 years ago

Read 2 more answers

Your sibling has 300% more bracelets than you. They have 18 bracelets. They give you 2 bracelets. How many bracelets do you have

Kisachek [45]

Answer:

Step-by-step explanation:

3 0

2 years ago

Trail mix sold in 1 Lb bags. Mary will buy trail mix for 15 members and each gets 2/5 pound bag. How many 1 lb bags should she b

solong [7]

Answer:

Mary should buy 6 bags

Step-by-step explanation:

To find the answer multiply $\frac{2}{5}$ by 15

$\frac{2}{5}*15=6$

So 6 Ib of trail mix will be perfect for the whole group

5 0

3 years ago