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3 years ago

Write a phrase for y + 9

Mathematics

2 answers:

faltersainse [42]3 years ago

6 0

The sum of y and 9

Hope this helps

serg [7]3 years ago

5 0

y and 9 added. its very easy. you can do "the sum of" or "_ and _ added"

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1. If 31 – 7 = 51, then 61 = A. 21 B. -7 C. -21 D. 42

Archy [21]

Answer:

WTH is this? none of it makes and sense

8 0

3 years ago

X+2=19 write a story

ValentinkaMS [17]

X=17

jack and jill went up the hill

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6 0

3 years ago

Read 2 more answers

(6, - 3, 1) and (8,9,-11) find the angle between the vector

Svetllana [295]

Answer:

The angle between the two vectors is 84.813°.

Step-by-step explanation:

Statement is incomplete. Complete form is presented below:

Let be (6,-3, 1) and (8, 9, -11) vector with same origin. Find the angle between the two vectors.

Let $\vec u = \langle 6, -3, 1 \rangle$ and $\vec v = \langle 8,9,-11 \rangle$ , the angle between the two vectors is determined from definition of dot product:

$\theta = \cos^{-1} \left(\frac{\vec u \,\bullet \,\vec v}{\|\vec u\|\cdot \|\vec v\|} \right)$ (1)

Where:

$\vec u$ , $\vec v$ - Vectors.

$\|\vec u\|$ , $\|\vec v\|$ - Norms of each vector.

Note: The norm of a vector in rectangular form can be determined by either the Pythagorean Theorem or definition of Dot Product.

If we know that $\vec u = \langle 6,-3,1 \rangle$ and $\vec v = \langle 8, 9,-11 \rangle$ , then the angle between the two vectors is:

$\theta = \cos^{-1}\left[\frac{(6)\cdot (8) + (-3)\cdot (9) + (1)\cdot (-11)}{\sqrt{6^{2}+(-3)^{2}+1^{2}}\cdot \sqrt{8^{2}+9^{2}+(-11)^{2}}} \right]$

$\theta \approx 84.813^{\circ}$

The angle between the two vectors is 84.813°.

6 0

2 years ago

Please help will mark brainliest PLZZZZZZzzz

polet [3.4K]

Answer:

see explanation

Step-by-step explanation:

The reciprocal of a number n is $\frac{1}{n}$

(a)

1 $\frac{6}{7}$ ← change to an improper fraction

= $\frac{13}{7}$

Then its reciprocal is $\frac{1}{\frac{13}{7} }$ = $\frac{7}{13}$

(b)

The reciprocal of $\frac{7}{13}$ is $\frac{1}{\frac{7}{13} }$ = $\frac{13}{7}$ = 1 $\frac{6}{7}$

(c)

Each is the reciprocal of the other

4 0

3 years ago

Which would be the BEST formula to model the volume of the bus shown?

Elenna [48]

Answer:

1.) D

2.) C

Step-by-step explanation:

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3 years ago