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1 year ago

A rectangle has side lengths, L and W, and a diagonal, d.

Mathematics

2 answers:

Dafna11 [192]1 year ago

5 0

18.6 (Second questions)

According to the thyoreme of Pythagor, the side of a traingle squared plus the other side of the triangle squared is equal to the hypothenuse squared. The hypothenuse is the longer side of a triangle and in this case our diagonal. Then we find the square root of 15(2) + 11(2). It is 18.60349683.

That long number is equal to 18.6

<u><em>PLEASE MARK BRAINLIEST IF IT HELPED</em></u>

Rina8888 [55]1 year ago

3 0

Answer:

Step-by-step explanation:

w^2 + l^2 = d^2

if length = 15 and width =11

(11)^2 + (15)^2 = d^2

346 = d^2

$\sqrt{346}$ = d

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find the size of each sample needed to estimate the difference between the proportions of boys and girls under 10 years old who

Alex Ar [27]

Answer:

sample

Step-by-step explanation:

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2 years ago

Sharon has a new beaded necklace. 72 out of the 80 beads on the necklace are blue. What

erma4kov [3.2K]

Answer:

Sharon bought a necklace with 90% blue beads.

Step-by-step explanation:

We are given that Sharon's necklace has 80 beads. We are also given that of those 80 beads, 72 of them are blue.

Therefore, we can set up a ratio of blue beads to total beads in order to find out the relationship.

$\displaystyle \frac{72}{80}=\frac{36}{40}=\frac{18}{20}=\frac{9}{10}$

Then, using the fraction we receive as a result, we can convert this to a decimal.

$\displaystyle \frac{9}{10} = 0.9$

After we complete this calculation, we can multiply our decimal by 100 in order to obtain the relationship in percentage form.

$0.9 \times 100 = 90\%$

Of the 80 beads, 90% were blue beads.

4 0

3 years ago

Read 2 more answers

Plz help I will mark you brainlist plz

Vsevolod [243]

Answer: p=0.87 (density of oil), m=37.5 (mass of liquid), v=11.92 (volume of liquid)

Step-by-step explanation:

p=m/v

p=43.5/50

p=0.87 (density of oil)

m=pv

m=2.5x15

m=37.5 (mass of liquid)

v=m/p

v=65/5.45

v=11.93 (volume of liquid)

8 0

3 years ago

Read 2 more answers

A bag contains 12 pennies, 9 nickels, 11 dimes and 3 quarters. A coin is selected at random from the bag. Find the probability.

steposvetlana [31]

Probablity=desiredoutcomes/totalpossibleoutcomes

see which ones fit
dimes and quarters are over 9 cents
there are 11+3 or 14 of them

total outcomes=12+9+11+3=35

probablity=14/35=2/5

probablity is 2/5

6 0

3 years ago

In 1975 1000 tons of coal was manufactured. It is 10% greater in 1976 and 5% less in 77. What is the final about of coal in 1977

Digiron [165]

In 1975 it was 1000tons, ok, well, in 1976 it went up by 10%, how much is a 10% increase?

$\bf \begin{array}{ccllll}
coal&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1000&100\\
x&100+10
\end{array}\implies \cfrac{1000}{x}=\cfrac{100}{100+10}\implies \cfrac{1000\cdot 110}{100}=x
\\\\\\
1100=x$

well, in 1976 it was 1100 tons then, and in 1977 it went down by 5% of 1100, well, if we take 1100 to be the 100%, then what is a 5% decrease?

$\bf \begin{array}{ccllll}
coal&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1100&100\\
x&100-5
\end{array}\implies \cfrac{1100}{x}=\cfrac{100}{100-5}\implies \cfrac{1100\cdot 95}{100}=x$

5 0

3 years ago