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anastassius [24]

3 years ago

10

Find the missing side of the triangle

1 answer:

Gnom [1K]3 years ago

6 0

Use the Pythagorean theorem.
x^2 + 5^2 = 13^2
x^2 + 25 = 169
x^2 = 144
x = 12

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Andre and Elena are each saving money. Andre starts with $100 in his savings account and adds $5 per week. Elena starts with $10

stira [4]

Answer:

6 weeks

Step-by-step explanation:

You need to write an equation for each.

For Andre, he has 100 dollars, and every week gets 5 dollars more. You add the 5 dollars, and Since you don't know how many weeks it has been, use a variable.

For Elena, she has 10 dollars, and gets 20 each week.

Now that you know that it has been 4 weeks, you can plug in 4 for the variable for weeks.

Andrew:100+5(4)=100+20+120

Elena: 10+20(4)=10+80=90

Andrew has more money in this time.

To find when they have the same amount, equal their expressions to each other. This means that they will have the same amount (because they are equalled) and you can solve to find the variable, which means the weeks that they are equal at.

Bring the like terms to each side by canceling them out. Since you have positive 10, then subtract 10 to each side. You have 5w, so subtract 5w to each side.

100+5w=10+20w

90+5w=20w

90=15w

90 divided by 15=6

w=6

5 0

3 years ago

If N is a 3-digit integer, and the result of reversing the digits of N is the number M, what is the maximum value of N-M? Please

Lena [83]

Answer:

The maximum value of N-M will be 792

Step-by-step explanation:

For N - M to be maximum

N must be very large and M must be very small

largest 3 numbers occur in 900's and smallest 3 digit numbers occur in 100's

so we need such an N which starts with 9 and ends with 1 so that on reversing it produces a number starting with 1.

If N = 901 , M will be 109

N - M = 792

This is the largest possible value of N - M

All other values of N-M will give a smaller value than 792.

5 0

4 years ago

What is 28 percent of 486

Dimas [21]

136.08 hope this helps

5 0

3 years ago

Read 2 more answers

Solve the equation for<br> x 3/4(x+21) = 10.5 <br> x =

MrRa [10]

<h3>✍️ Answer:</h3><h3> $x=-\frac{294}{13}$ </h3>

✽✽✽✽

$\frac{x\cdot \:3}{4\left(x+21\right)}=10.5$

$\mathrm{Multiply\:both\:sides\:by\:}4\left(x+21\right)$

$\frac{x\cdot \:3}{4\left(x+21\right)}\cdot \:4\left(x+21\right)=10.5\cdot \:4\left(x+21\right)$

$3x=42\left(x+21\right)$

$3x=42x+882$

$\mathrm{Subtract\:}42x\mathrm{\:from\:both\:sides}$

$3x-42x=42x+882-42x$

$-39x=882$

$\mathrm{Divide\:both\:sides\:by\:}-39$

$\frac{-39x}{-39}=\frac{882}{-39}$

$x=-\frac{294}{13}$

❅❅❅❅❅❅❅❅❅❅

<h3>hope it helps...</h3><h3>have a great day!!</h3>

4 0

3 years ago

OMG PLS HELP WITH THIS IM PANICKING OMG I GOT A F IN MATH MY MOM JUST YELLED AT ME IM CRYING PLS HELP WITH THS- PLSS TELL ME WHA

Savatey [412]

Answer:

Ok, here we can see that Mr. Jones has $3,553 in his account, and he actually needs $18,469 to buy the car.

One way of representing this is:

Get a ruler, and draw a line that measures 3.553 cm (or close to it, it shouldn't be exact)

Now draw a line that measures 18.469 cm (again, this shouldn't be exact)

The difference between these lines represents the amount of money that Mr. Jones needs to save.

Now, how we find exactly the quantity?

Let's take the total cost of the car:

$18,469

Now let's subtract the amount of money that Mr. Jones already has:

$18,469 - $3,553 = $14,916

This is the amount of money that Mr. Jones needs to save if he wants to buy the car.

3 0

3 years ago