Ask question

Ask question

All categories

Tcecarenko [31]

3 years ago

9

One number is 3 more than another number. if you add 12 to 4 times the first number, the result is 5 times the second number. Fi

nd the numbers

1 answer:

aleksklad [387]3 years ago

3 0

Answer:

first is -3, second number is 0

Step-by-step explanation:

you have two equations x+3=y and 4*x+12=5*y

Use the first one and write y in terms of x in the second equation:

4*x+12=5*(x+3)

4*x+12=5*x+15

12=5*x-4*x+15

12=x+15

x=-3

You might be interested in

Your neighbor burns 100 Calories in 10 minutes cross-country skiing. There is a proportional relationship between Calories burn

Zinaida [17]

Answer:

10

Step-by-step explanation:

For every one minute 10 calories are being burned

4 0

3 years ago

The measure of one angle is 13 less than five times The measure of another angle. The sum of the measure of the two angles is 14

kodGreya [7K]

$\huge\boxed{a=\frac{229}{2};\ \ b=\frac{51}{2}}$

<em>In decimal form, a = 114.5; b = 25.5</em>

We will write this as a system of equations, where $a$ and $b$ are the two angles.

$\left \{ {{a=5b-13} \atop {a+b=140}} \right$

We will use substitution to solve this system. We know what $a$ equals, so we plug that into the second equation.

$5b-13+b=140$

Combine the like terms.

$6b-13=140$

Add $13$ on both sides.

$6b=153$

Divide both sides by $6$ .

$b=\frac{153}{6}=\boxed{\frac{51}{2}}$

Now just subtract that from $140$ .

$a=140-\frac{51}{2}=\boxed{\frac{229}{2}}$

7 0

3 years ago

What is the standard form of 8.2x10 to the power of 5

-Dominant- [34]

Answer:

820000

Step-by-step explanation:

all you've got to do is move the decimal point how many times the power is. in this instance it''s 5. hope that helped mate.

6 0

3 years ago

Ehhhhhhhhhhhhhhhhhhhhhh help

garri49 [273]

Answer:

C

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find the value of k for x^2 - 2kx+7k -12=0 so that they have two equal roots

Alisiya [41]

Step-by-step explanation:

x^2 -2kx +7k -12 = 0

two equal roots -->Δ = b^2 -4ac = 4k^2 - 4(7k-12)=0 = 4(k^2 - 7k +12)=4(k-4)(k-3)=0

so k =3 and k =4

5 0

3 years ago