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Trava [24]
3 years ago
13

I have no idea how to do this. Its substitution.

Mathematics
1 answer:
barxatty [35]3 years ago
7 0
Since y = x+5, we can substitute y for x+5, making the new equation
3x + x+5 =25. Now, you can solve traditionally. 4x = 20, x = 5, y = 10
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PLEASE HELP ME SOLVE THIS.
Black_prince [1.1K]

Answer:

in ur 4figure table fine tan 45 and mutiple it by 3 and find sin 60 and mutiple it by 4 ur answer mutiple it by what u got in tan 45 mutiple by 3

fin cos 30 and mutiple by 2 and sin 30 mutiple by 3 mutiple ur answers together

then finally what u got for the first on subtracted from ur second answer

6 0
3 years ago
For her phone service, Martina pays a monthly fee of $25, and she pays an additional $0.07 per minute of use. The least she has
Mekhanik [1.2K]

Answer: Anything that is 1202 or larger

In other words, m \ge 1202

So we could have m = 1202, or m = 1203, or m = 1204, etc.

===============================================

Explanation:

  • m = number of minutes used
  • 0.07m = amount charged for those minutes used excluding the $25
  • 0.07m+25 = total monthly bill now including the extra $25 fee

The monthly bill is at least $109.14, since this is the lowest amount she has been charged.

\text{monthly bill} \ge 109.14\\\\0.07m+25 \ge 109.14\\\\0.07m \ge 109.14-25\\\\0.07m \ge 84.14\\\\m \ge \frac{84.14}{0.07}\\\\m \ge 1202\\\\

This says that the least number of minutes Martina has used is 1202 minutes.

So if m was a whole number, then m could be selected from the set {1202, 1203, 1204, ...}

Side note: 1202 minutes = 1202/60 = 20.033 hours approximately.

8 0
3 years ago
What is the density of a bowling ball with a mass of 3.0 kg and a volume of 0.0050 m3?
In-s [12.5K]
6.0⋅<span>102</span><span>kg m<span>−3</span></span> Explanation:

In order to find the density of the bowling ball, <span>ρ </span>, you must determine the mass one unit of volume of this bowling ball would have.

Notice that the problem provides you with the volume of the bowling ball expressed cubic meters, <span><span>m3</span> </span>, which means that one unit of volume would be <span><span>1 m3</span> </span>.

Now, you know that a volume of <span><span>0.0050 m3</span> </span> has a mass of <span>3.0 kg </span>. You can use this known proportion as a conversion factor to figure the mass of <span><span>1 m3</span> </span>

<span><span>1<span>m3</span>⋅<span>3.0 kg<span>0.0050<span>m3</span></span></span>=600 kg</span> </span>

So, you know that one unit of volume has a mass of <span>600 kg </span>, which means that the bowling ball's density is equal to

<span><span><span>ρ=6.0⋅<span>102</span><span>kg m<span>−3</span></span></span><span>−−−−−−−−−−−−−−−−−</span></span> </span>

The answer is rounded to two sig figs.

7 0
4 years ago
Read 2 more answers
The measure of two supplementary angles are in the ratio 4:11 what is the measure of the larger angle
vichka [17]

The answer of larger angle is 132 degree

8 0
3 years ago
The difference of two numbers is 48. The larger number is three times the smaller number. Find the numbers.
telo118 [61]

The numbers are 24 and 72

Step-by-step explanation:

  • Step 1: Let the small number be x. Then the larger number = 3x. Difference = 48

⇒ 3x - x = 48

⇒ 2x = 48

⇒ x = 24

⇒ 3x = 3 × 24 = 72

4 0
3 years ago
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