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3 years ago

Simplify (-0.9d)(-5.5)

Mathematics

2 answers:

Lyrx [107]3 years ago

7 0

Answer:

=4.95d

Step-by-step explanation:

timurjin [86]3 years ago

7 0

Answer: 4.95d

Step-by-step explanation:

Do (0.9)x(5.5)= 4.95

Now add the d= 4.95d

And the minuses cancel out to become +

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Kevin has 44 marbles. 34 of them drop. 89 get donated to him. how many marbles does Kevin have now?

kvv77 [185]

Answer:

44-34= 10+89=99 marbles

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Write an expression to find the total cost of buying b paperback books and m magazines if magazines cost $4.95 each and paperbac

xxTIMURxx [149]

Answer:

$Total\ cost=7.95b+4.95m$

Step-by-step explanation:

Paperback Books:

Number of books $=b$

Cost of 1 book $=\$7.95$

$Cost\ of\ all\ paperback\ books=cost\ of\ 1\ book\times number\ of\ books\\\\Cost\ of\ all\ paperback\ book=7.95\times b=7.95b$

Magazines:

Number of magazines $=m$

Cost of 1 magazine= $\$4.95$

$Cost\ of\ all\ magazine=cost\ of\ 1\ magazine\times number\ of\ magazine\\\\Cost\ of\ all\ magazines=4.95\times m=4.95m$

$Total\ Cost=Cost\ of\ paperback\ books+Cost\ of\ magazine\\Total\ Cost=7.95b+4.95m$

8 0

3 years ago

F(x)=(x - 4)^2-1 what is x ?

AysviL [449]

Answer:

(x−3)(x−5)

Step-by-step explanation:

Hope this helped

3 0

2 years ago

The sum of two numbers is 12. The difference of the two numbers is 22. Find the two numbers

valentina_108 [34]

Answer:

-5 and 17

Step-by-step explanation:

The sum of two numbers (let's just say number a and number b) is 12.

a + b = 12

The difference between the same two numbers (still a and b) is 22.

b - a = 22

(Move variable a to the right side to get the following.)

b = 22 + a

(This way, we can substitute b = 22 + a into the first equation, a + b = 12, and solve.)

a + (22 + a) = 12

a + a + 22 = 12

2a = -10

a = -5

a + b = 12

-5 + b = 12

b = 17

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2 years ago

Perimeter of a mirror is 260. The length is x cm. Find the height of the mirror in terms of x

Elenna [48]

$\bf \textit{perimeter of a rectangle}\\\\ P=2(L+h)~~ \begin{cases} L=length\\ h=height\\[-0.5em] \hrulefill\\ P=260\\ L=x \end{cases}\implies 260=2(x+h) \\\\\\ \cfrac{260}{2}=x+h\implies 130=x+h\implies 130-x=h$

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3 years ago