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kiruha [24]
2 years ago
13

the expression 2L+2w is used to find the perimeter of a rectangle with length L and width w. What is the perimeter of a rectangl

e with length 15cm and width 4cm?
Mathematics
1 answer:
ipn [44]2 years ago
6 0

Answer:

38cm

Step-by-step explanation:

p=2l+2w=2×15cm+2×4cm=30cm+8cm=38cm

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What's 3/4 times 7/9 in simplest form
Alexxandr [17]
3/4 times 7/9:

First, we must use the rule for multiplying fraction. The rule is: a/b times c/d = ac/ bd. Let's substitute our problem into that formation.
\frac{3 \times 7}{4 \times 9}

Second, we can now simplify. (3 times 7 = 21) and (4 times 9 = 36). 
\frac{21}{36}

Third, since our fraction is not in the simplest form, we can simplify it down by listing the factors of both the numerator and denominator and then finding the greatest common factor (GCF). 

Factors of 21: 1, 3, 7, 21
Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36

The GCF is 3, since only 1 and 3 were the common factors and since 3 is the greatest common factor. 

Fourth, now we can divide our numerator (21) and denominator (36) by our recently found GCF which was 3. 

21 \div 3 = 7 \\ 36 \div 3 = 12

Our new fraction in its simplest form is 7/12.

Answer in fraction form: \fbox {7/12}
Answer in decimal form: \fbox {0.5833}
7 0
3 years ago
Read 2 more answers
Find the common difference of the arithmetic sequence -2,6,14,...
yawa3891 [41]

Lets note the change between each of the numbers in the sequence:

-2 --> 6 ---> 14

Next, make an equation between each of these numbers with x being the change between them

-2+ x = 6, 6 + x = 14 .

Now, solve each of these equations:

-2+ x = 6 --> -2+ x = 6 <em>Add 2 on both sides to cancel out the -2 </em>--> <em>x = 8</em>

6+ x = 14 --> -2+ x = 6 Minus <em>6 on both sides to cancel out the 6 </em>--> <em>x = 8</em>

<u><em>From this, the common difference will be 8.</em></u>

Hope that helps.

8 0
3 years ago
Sally starts a lemonade stand. She has a startup cost of $20 dollars and
vodka [1.7K]

Answer:

Sally will need to sell 8 glasses of lemonade

Step-by-step explanation:

Very Simple, you just need to do 20 divided by 2.50 and there is your answer

Hope this helps :)

5 0
3 years ago
Find the slope and y-intercept for x + 3y=3
Zarrin [17]

By definition, the Slope-Intercept Form of the equation of a line is:

y=mx+b

Where "m" is the slope and "b" is the y-intercept.

Then, to find the slope and the y-intercept of the line given in the exercise, you only need to solve for "y", in order to write the equation in Slope-Intercept Form:

\begin{gathered} x+3y=3 \\ 3y=-x+3 \\  \\ y=\frac{-1}{3}x+\frac{3}{3} \\  \\ y=-\frac{1}{3}x+1 \end{gathered}

Now you can identify that the slope is:

m=-\frac{1}{3}

And the y-intercept is:

b=1

Therefore, the answer is:

\begin{gathered} m=-\frac{1}{3} \\  \\ b=1 \end{gathered}

5 0
1 year ago
Pls help me guys!<br> Thanks =D
notsponge [240]
   4.25 inches cubed because if you do 3.5x3.5x7 =85.75 then 90-85.75=4.25
6 0
3 years ago
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