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2 years ago

Q. Penelope is told to clean all the windows at her house. After cleaning 9 windows her job is

Mathematics

2 answers:

iVinArrow [24]2 years ago

7 0

30 windows in all. Look at the attachment for work.

algol [13]2 years ago

5 0

Answer:

Step-by-step explanation:

Proportions!

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Solve the following equation for x.<br> 0.1(x + 250) = 5,000<br> h

yan [13]

Answer:

x=49750

Step-by-step explanation:

0.1(x + 250) = 5,000

Divide each side by .1

0.1(x + 250)/.1 = 5,000/.1

x+250 =50000

Subtract 250 from each side

x+250-250 = 50000-250

x=49750

3 0

2 years ago

Read 2 more answers

Charlotte is happy because it has snowed in her town for three straight

yan [13]

You just have to add each amount of snow to figure out the total. This will get you 10.989

3 0

3 years ago

Read 2 more answers

Help with 21 would be much appreciated.

umka2103 [35]

Answer:

$\large\boxed{x=2\sqrt{21}\ and\ y=4\sqrt3}$

Step-by-step explanation:

Look at the picture.

ΔADC and ΔCDB are similar. Therefore the sides are in proportion:

$\dfrac{AD}{CD}=\dfrac{CD}{DB}$

We have

$AD=14-8=6\\CD=y\\DB=8$

Substitute:

$\dfrac{6}{y}=\dfrac{y}{8}$ <em>cross multiply</em>

$y^2=(6)(8)$

$y^2=48\to y=\sqrt{48}\\\\y=\sqrt{16\cdot3}\\\\y=\sqrt{16}\ cdot\sqrt3\\\\\boxed{y=4\sqrt3}$

For x use the Pythagorean theorem:

$x^2=6^2+(4\sqrt3)^2\\\\x^2=36+48\\\\x^2=84\to x=\sqrt{84}\\\\x=\sqrt{4\cdot21}\\\\x=\sqrt4\cdot\sqrt{21}\\\\\boxed{x=2\sqrt{21}}$

3 0

2 years ago

Question is in picture

stiv31 [10]

Answer:

27.5

Step-by-step explanation:

pythagorean theorem. a^2+b^2=c^2.

so 12^2+b^2=30^2

meaning 144+b^2=900

900-144=756

square root 756

b=27.5

5 0

2 years ago

Four times the larger number of two numbers is equal to seven times the smaller. The sum of the numbers is 22. Find the numbers

BartSMP [9]

Answer:

14 and 8

Step-by-step explanation:

Solution set:

x+y=22

4x=7y

Solving:

4(22-y)=7y

88-4y=7y

88=11y

8=y

8+14=22

6 0

3 years ago