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3 years ago

I NEED HELP WITH MY FINALL

Mathematics

2 answers:

sweet [91]3 years ago

5 0

what you need help with?

JulijaS [17]3 years ago

4 0

Answer:

it takes 2.56 (or 2 14/25) months

Step-by-step explanation:

Edmond has $45 in his saving account. He wants to purchase a computer that costs $768. He starts to babysit for his cousin and gets paid $90/week. He plans to spend some money and deposit $75/ week in his account. Define a variable and write an equation and solve to find how many months it takes for him to buy the computer. Assume that every month has 4 weeks

Even though Edmond is getting $90 a week, he's only depositing $75

Based on this information your equation would be:

75w = $768 where w = week

To solve that divide 75 by 768

w = 10.24 or 10 6/25

If there are 4 weeks in a month then your new equation would be

w/4 = m where m = months

To solve this, substitute w for 10.24 or 10 6/25

(10.24)/4 = m

m = 2.56 or 2 14/25

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Abc is bisected by bd for what value of x will dx= day be true?

Reil [10]

Answer:

$x=3\\$

Step-by-step explanation:

Note that because BD is an angle bisector, then angle XBD and angle DXY are equal. Also note that BYD and BXD are equal because they are both right angles. Also, by the transaitive property, BD = BD. Therefore, it can be concluded that BXD is congruent to BYD.

Therefore, we must solve $5x+4=19 \Longrightarrow 5x = 15 \Longrightarrow x=3$ .

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3 years ago

The hypotenuse of one side of a right angled triangle are 5cm and 4cm respectively. what is the length of the other side

AURORKA [14]

Answer: 3cm

Explanation:

We can use Pythagorean’s theorem to find that other side:

a^2 + b^2 = c^2
a^2 + 4^2 = 5^2
a^2 = 25 - 16
a^2 = 9
a = 3

Therefore, the other side is 3cm

3 0

3 years ago

Read 2 more answers

A store originally purchased a refrigerator at a cost of $650.20 and marked it up 50%. After a few weeks, however, the store dis

Murrr4er [49]

Answer:

Step-by-step explanation:

Step one:

the original price of refrigerator = $650.20

the markup/raise is 50%

the new price after the raise is

= 50/100*650.20

=0.5* 650.20

=325.1

The raise is by $325.1

The new price is $325.1+ $650.20=$975.3

Step two:

there was a discount of 70%

so =(70/100)*975.3

=0.7*975.3

=682.71

The discounted price is $682.71

The new price is 975.3-682.71

=$292.59

7 0

3 years ago

A model rocket was built using a scale factor of 1:15 if the height of the actual rocket is 9.9m, what is the height of the mill

beks73 [17]

Answer:

660 mm

Step-by-step explanation:

we know that

The scale factor is $\frac{1}{15}$

That means

1 unit in the model represent 15 units in the actual

1 m in the model represent 15 m in the actual

To find out the height of the model rocket, divide the height of the actual rocket by 15

$9.9\ m=\frac{9.9}{15}= 0.66\ m$

Convert m to mm

Remember that

$1\ m=1,000\ mm$

To convert meters to millimeters, multiply by 1,000

$0.66\ m=0.66(1,000)=660\ mm$

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3 years ago

What does 27.75n represent

Phoenix [80]

Answer:

There is $27.75 and n is the number of books.

<h2><em>hope this helped</em></h2>

8 0

3 years ago