3 years ago

How do you do the problem a(b+c+1)

1 answer:

3 0

Use the distributive property, so do ab + ac + a(1) = ab + ac + a. Then substitute your values for a, b, and c to find the answer

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The grades on the last history exam had a mean of 75%. Assume the population of grades on history exams is known to be normally

RUDIKE [14]

34% . <span>Since going from 75% to 82% is simply the right portion of that middle, the answer is half of 68%, or 34%.</span>

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3 years ago

Joey fills 1/5 of a toffee box in 1/25 of a

butalik [34]

1/25 of a minute is 2,4 secs.

1/5 = 2,4s
5/5 = 12 secs

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3 years ago

Read 2 more answers

A biology class examined some flowers in a local meadow. They saw 50 flowers, of which 40% were perennials. How many perennial f

a_sh-v [17]

Answer:20

Step-by-step explanation:

No. Of perrenial flowers=50*40%=50*40/100= *20*

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3 years ago

What’s the answer please help

noname [10]

Answer:

$\boxed{\text{A. }\math{\left \{ x \, | \, x \in \mathbb{R}, x < -2 \right \}}}}$

Step-by-step explanation:

The open circle means that the point is not included in the solution set, and the arrow pointing left means that all numbers less than -2 are members.

In set-builder notation, each term has a special meaning. The braces enclose the members of the set.

Here's how you translate the notation,

$\begin{array}{rcl}\\\left \{ & = & \text{The set of}\\x & = & \text{all x values}\\| & = &\text{such that}\\x & = & x\\\in & = &\text{is a member of}\\\mathbb{R}, & = &\text{all real numbers, and}\\x < -2 & = & \text{x is less than -2}\\\end{array}\\\text{The answer is }\boxed{\textbf{A. }\mathbf{\left \{ x \, | \, x \in \mathbb{R}, x < -2 \right \} }}}$

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3 years ago

3. Samantha earns $7.80 per hour. If her regular hours are 40

ddd [48]

Answer:

468

Step-by-step explanation:

312 for the regular 40 hours then overtime for 10 hours would be 7.80 doubled times 10

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3 years ago