3 years ago

X time 7 = 21 What is X

Mathematics

1 answer:

KonstantinChe [14]3 years ago

3 0

Answer:

X=3

Step-by-step explanation:

7 x 1 = 7

7 x 2 = 14

7 x 3 = 21

You add seven to the last answer to get your next one.

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The polynomial of degree 5, P(x) has leading coefficient 1, has roots of multiplicity 2 at x=1 and x=0, and a root of multiplici

Vsevolod [243]

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3 years ago

A particle starts at the point P=(−1,1,3)P=(−1,1,3) and moves along a straight line toward Q=(−4,4,5)Q=(−4,4,5) at a speed of 7

zvonat [6]

Answer: (-1,1,-3) + 7 x t x (3,-2,-8)/ $\sqrt{77} \\$

Step-by-step explanation:

The parametric vector equation for the position of particle is given as:

We have P= (-1,1-3)

Q= (-4,4,5)

So PQ vector= (-1+4,1-3, -3-5)

PQ = (3,-2,-8)

Magnitude of this vector= $\sqrt{(3)^2+(-2)^2+(-8)^2}$

Magnitude= $\sqrt{77} \\$

So unit vector= (3, -2, -8)/ $\sqrt{77} \\$

Now the equation is as:

P + 7 x t x unit vector = (-1,1,-3) + 7 x t x (3,-2,-8)/ $\sqrt{77} \\$

5 0

3 years ago

Condense (cos92°)(cos133°)-(sin92°)(sin133°) into a singular trigonometric function expression, then find the exact value.

goldenfox [79]

Answer:

-1/√2

Step-by-step explanation:

According to trigonometry identity

cos(A+B) = cosAcosB - sinA sinB

Given the expression

(cos92°)(cos133°)-(sin92°)(sin133°)

This can be expressed as cos(92+133) where A = 92, B = 133

(cos92°)(cos133°)-(sin92°)(sin133°)

= cos(92+133)

= cos225

= -0.7071

= -1/√2

Hence the exact value is -1/√2

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The baby giraffe weighed 132 pounds at birth. He gained weight at a steady rate for the first 7 months until his weight reached

marusya05 [52]

Answer:

the giraffe gained 58 pounds each month.

Step-by-step explanation:

do 538-132 then do 406÷7. you will get 58.

hope this helps!

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3 years ago

A Physician orders acetaminophen elixir 6mg/kg/dose for a child who weighs 65 lbs.

storchak [24]

1kg = 2.205lbs
6mg for 2.205lbs
65 x 6 = 390
390 divided by 2.205
= 176.8707482993197
(Rounded Tenths) = 176.9

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3 years ago