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olga55 [171]
3 years ago
7

A) Use numbers 7,5,6 and 3, only once each, to create an expression that equals 75. You may use addition, subtraction, multiplic

ation, and/or division, but you must use parentheses.
Answer: (7+5)x6+3

b) Now use the Distributive Property to write an equivalent expression without parentheses. (You may use the numbers more than once or use different digits for this part only)

Answer:
Mathematics
1 answer:
bearhunter [10]3 years ago
6 0
6(7+5) + 3 =
42 + 30 + 3 =      <<<< This one is the equivalent expression

If you wanted to continue and solve...

72 + 3 =
75
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Solve the equation. x/5 +9 = 4
solniwko [45]

Mult. all 3 terms by 5: x + 45 = 20.

Subtr. 45 from boths ides: x = -25 (answer)

6 0
3 years ago
Ian wants to promote his band on the internet. Site a offers website hosting for $4.95 per month with a $49.99 startup fee. Site
olya-2409 [2.1K]
 <span>I believe for twelve (12) months. 

Site A: $49.95 plus $59.40(4.95 x 12) equals $109.35 

Site B: $9.95 x 12 equals $119.40 

No, wait that's not right. 

Okay, at 8 months, site A is pretty much at $90 (forget the nickels) and site B is $80 so site B is less. 
At 7 months, site A is $85 and site B is $70 so site B is less. 
At 9 months, site A is $95 and site B is $90 so site B is less. 
At 10 months, site A $100 and site B is $100 

It's got to be around 10 months somewhere. 

Ten months would be $99.45 for site A and $99.50 for site B so B is less. 

Eleven months is $104.40 for A and $109.45 for B so now B is more.</span>
3 0
3 years ago
Consider testing batteries coming off an assembly line one by one until one having a voltage within prescribed limits is found.
sleet_krkn [62]
It's clear enough that

\mathbb P(E_i)=\mathbb P(i=j)=\begin{cases}0.99&\text{for }j=1\\0.01\times0.99&\text{for }j=2\\0.01^2\times0.99&\text{for }j=3\\\vdots\end{cases}

Because each of the E_i are disjoint, it follows that

\displaystyle\mathbb P(\text{sample space})=\mathbb P(E_1\cup E_2\cup\cdots)=\mathbb P\left(\bigcup_{i=1}^\infty E_i\right)=\sum_{i=1}^\infty\mathbb P(E_i)
=0.99+0.01\times0.99+0.01^2\times0.99+\cdots
=0.99(1+0.01+0.01^2+\cdots)
=0.99\displaystyle\sum_{n=0}^\infty 0.01^n
=0.99\times\dfrac1{1-0.01}
=\dfrac{0.99}{0.99}=1
5 0
3 years ago
Please solve both step by step I'll mark you as brainliest
Kitty [74]

Answer:

5. -5x - 1

6. -x - 4

Step-by-step explanation:

5.

Distribute (get rid of parentheses):

-5x - 1

6.

Distribute (get rid of parentheses):

-x - 4

6 0
3 years ago
Read 2 more answers
Stephanie is making beef for a party the recipe uses 1 1/2 teaspoons of pepper, 3 2/4 teaspoons of garlic powder 1/8 teaspoons o
Arisa [49]

<u><em>Answer:</em></u>

<u>She will use:</u>

3 tablespoons of pepper

7 tablespoons of garlic powder

\frac{1}{4} tablespoon of thyme

8 tablespoons of onion powder

<u><em>Explanation:</em></u>

To double the amount, Stephanie will need to double the amount of each ingredient used. This means that she will multiply each amount by 2

<u>Therefore:</u>

New amount of any ingredient = old amount of that ingredient x 2

<u>This means that:</u>

New amount of pepper = 1\frac{1}{2}*2= 3 tablespoons

New amount of garlic powder = 3\frac{2}{4}*2=7 tablespoons

New amount of thyme = \frac{1}{8}*2=\frac{1}{4} tablespoons

New amount of onion powder = 4*2=8 tablespoons

Hope this helps :)

8 0
3 years ago
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