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m_a_m_a [10]
3 years ago
15

1.) If P = 2l + 2w, the formula to find w is _____

Mathematics
2 answers:
Elis [28]3 years ago
7 0
I hope this helps you

Lynna [10]3 years ago
6 0

Answer:

d and a

Step-by-step explanation:

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R 3. The mean of 4 numbers is 8. Three of the numbers add up to 22. What is the last number?​
statuscvo [17]
<h2><em><u>Solution</u></em> : </h2>

let the last number be x

we know,

\boxed{mean =  \frac{sum \:  \: of \:  \: all \:  \: observations}{number \:  \: of \:  \: observations} }

So,

\hookrightarrow \: 8 =  \dfrac{22 + x}{4}

\hookrightarrow \: 8 \times 4 = 22 + x

\hookrightarrow \: 32 = 22 + x

\hookrightarrow \: x = 32 - 22

\hookrightarrow \: x = 10

therefore, the last number is 10.

7 0
2 years ago
Which of the binomials below is a factor of this trinomial?
adelina 88 [10]

Answer: Maybe its D not a 100% sure through.

Step-by-step explanation:

5 0
3 years ago
Factor the trinomial below. Enter each factor as a polynomial in descending order x2-10x+25
kondaur [170]
What multiplies to 25 and adds to -10
-5 and -5

(x-5)(x-5)
(x-5)²
3 0
3 years ago
Evaluate: 10x when x=10<br> The answer is_______( just type in your final number answer)​
Kisachek [45]

Answer:

100

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A team of three students are working on a language-learning app; they need to develop 300 micro-lessons and 300 micro-tests befo
Olegator [25]

Answer: a) 15 b)

Step-by-step explanation:

Let X be the number of days:

a)

For LESSONS:

Jordan does 10 / day ( 10*X)

Marco 5 / day ( 5*X)

Junyi 5 / day ( 5*X)

For TESTS:

Jordan does 5 / day ( 5*X)

Marco 10 / day ( 10*X)

Junyi 8 / day ( 8*X)

for each they need a total of 300

a) 10X+5X+5X=300 => 20X = 300 => X = 15 days for the lessons

b) 5X+10X+8X = 300 => 23X = 300 => X = 13.04 days for the tests

so they need 15 days to finish both tasks

now if Junyi gets sick we just eliminate his contribution

a) 10X+5X=300 => 15X = 300 => X = 20 days for the lessons

b) 5X+10X = 300 => 15X = 300 => X = 20 days for the tests

so in 20 days they will finish without him

If jordan works 10 hours a day, we just replace him with 10/24

a) 10(10/24)+5X+5X= 300 => X = 29.58 days for the lessons

b) 5(10/24)+10X+8X = 300 => X = 16.51 days for the tests

so at the end to complete both tasks they need 29.58 days

4 0
3 years ago
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