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3 years ago

What times what equels -54?

Mathematics

1 answer:

Nastasia [14]3 years ago

5 0

1,54 3,8 6,9
multiply the pairs of numbers

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A package of cookies has 6 chocolate chip cookies with nuts and 12 chocolate chip cookies without nuts. Which of these represent

Mila [183]

Answer:

6:18

Step-by-step explanation:

Number of cookies with nuts = 6

number of total cookies = no. of cookies WITH nuts + no. of cookies WITHOUT nuts.

= 6 + 12 = 18

Ratio of

Number of cookies with nuts : number of total cookies

6 : 18

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2 years ago

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5c + cd when c 1/5 and d = 15

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19 times. what is close to 24

balandron [24]

437 is the answer that i got

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2 years ago

If Vector u=(5,-7) and v=(-11,3), 2v-6u=_____ and ||2v-6u||≈_____

Sauron [17]

<h2>Answer:</h2>

$2\vec{v}-6\vec{u}=(-52,48) \\ \\ ||2\vec{v}-6\vec{u}||=75.28}$

<h2>Step-by-step explanation:</h2>

In this problem we have two vectors:

$\vec{u}=(5,-7) \ and \ \vec{v}=(-11,3)$

So we need to find two things:

$2\vec{v}-6\vec{u}$

and:

$||2\vec{v}-6\vec{u}||$

FIRST:

In this case we have the multiplication of vectors by scalars. A scalar is a simple number, so:

$2\vec{v}-6\vec{u} \\ \\ Replace \ \vec{v} \ and \ \vec{u} \ by \ the \ given \ vectors: \\ \\ 2(-11,3)-6(5,-7) \\ \\ Multiply \ each \ component \ by \ the \ corresponding \ scalar:\\ \\ (2\times (-11),2\times 3)+(-6\times 5,-6\times (-7)) \\ \\ (-22,6)+(-30,42) \\ \\ Sum \ of \ vectors: \\ \\ (-22-30,6+42) \\ \\ \therefore \boxed{(-52,48)}$

SECOND:

If we name:

$\vec{w}=2\vec{v}-6\vec{u}$

Then, $||2\vec{v}-6\vec{u}||$ is the magnitude of the vector $\vec{w}$ . Therefore:

$||\vec{w}||=||2\vec{v}-6\vec{u}|| \\ \\ ||\vec{w}||=||(-52,48)|| \\ \\ ||\vec{w}||=\sqrt{(-58)^2+48^2} \\ \\ ||\vec{w}||=\sqrt{3364+2304} \\ \\ ||\vec{w}||=\sqrt{5668} \\ \\ \boxed{||\vec{w}||=75.28}$

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2 years ago

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Ms. Leong owned an ice cream store and had chocolate ice cream and vanilla ice cream for sale. She sold ¾ of the chocolate ice c

Katarina [22]

answer:

140 scoops

explanation:

3/4 of 80 is 20 and 1/2 of 60 is 30. when you add 80 and 60 you get 140

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2 years ago

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