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anygoal [31]
3 years ago
13

The second of two numbers is 10 more than 3 times first their sum is 70 find the numbers

Mathematics
1 answer:
kompoz [17]3 years ago
8 0
Let the first number be represented by x and the second 10+3x
x+3x+10=70                                           10+3x=10+3(15)=10+45=55
4x+10=70                                            the two numbers are 15 and 55
4x+10-10=70-10
4x=60
4x/4=60/4
x=15
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Select the correct answer from each drop-down menu.
irakobra [83]

Answer:

The length of side AC is 5 units.

The areas of triangle ABC is 10 square units.

Step-by-step explanation:

From point A (1,3) to point C (1,-2) is 5 units

To check this:

3 - (-2) = 3 + 2 =5

We're subtracting since the point went down (from positive 3 to negative 2)

Now for the area:

Area formula for a triangle: \frac{1}{2}bh = \frac{1}{2}⋅b⋅h

We already found the height (length) : 5

The base is from point C (1,-2) to point B (5,-2), which is 4 units

To check this:

5 - 1 = 4

Now that we have found the base and height, Let's solve:

\frac{1}{2}⋅4⋅5 = \frac{1}{2}⋅20 = 10

Our area is 10 square units.

Hope that helps :)

6 0
2 years ago
If the maximum acceleration that is tolerable for passengers in a subway train is 1.74 m/s2 and subway stations are located 930
Free_Kalibri [48]
Given that the subway stations are 930 m apart, the train have to be accerelated for half the distance and then decerelated for the rest of the distance.

Recall that the distance travelled by an object with an initial velocity, u, for a period of time, t, at an accereration, a, is given by
s=ut+ \frac{1}{2} at^2

But, we assume that the train accelerates from rest, thus
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The maximum speed is attained at half the center of the distance between subway stations (i.e. at distance = 465 m).

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6 0
3 years ago
10 – 2v = -5v – 50 what is V
Virty [35]
I think it’s v=-20 i showed you my work if that helps :)

4 0
3 years ago
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AURORKA [14]

Answer:

An origination fee is typically 0.5% to 1% of the loan amount and is charged by a lender as compensation for processing a loan application. Origination fees are sometimes negotiable, but reducing them or avoiding them usually means paying a higher interest rate over the life of the loan

Step-by-step explanation:

3 0
3 years ago
i need to help write the equation in vertex form for the parabola with vertex at ( 2,-1) and y - intercept 5
densk [106]

Answer: y= 5/2(x-2)^2 - 1

Step-by-step explanation:

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5 0
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