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raketka [301]
3 years ago
5

I need help...... someone plzzz help

Mathematics
2 answers:
bagirrra123 [75]3 years ago
8 0
The answer is 58 and 39
BaLLatris [955]3 years ago
8 0

Answer:

x is 58. y is 34

Step-by-step explanation:

x + y = 97.

x - y = 19

If you add the 2 equations together, isolate the variable x, and then plug that number into the first equation, you get these numbers.

x + y + (x - y) = 97 + 19

2x = 97 +19

2x = 116

divide both sides by 2

x = 58

plug it into the first equation and solve for y and you'll get 34.

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I don't know how to do this​
Gre4nikov [31]

Answer:

x = -11/5 and y = 24/5

Step-by-step explanation:

Use elimination.

First, we need to multiply so that at least one variable can cancel out.

We can multiply the top equation by 2.

So we get

4x + 6y = 20

Then, we can use elimination.

The x's cancel out.

So we get 5y = 24

Or y = 24/5

Then, we can plug in this y value back into the first equation to find x.

2x + 3(24/5) = 10

2x + 72/5 = 50/5

2x = -22/5

x = -11/5

So x = -11/5 and y = 24/5

5 0
3 years ago
Given: ABC , BD is an<br> altitude to side AC, &amp; D is a midpoint<br> Prove: AB BC
Over [174]

Answer:

steps below

Step-by-step explanation:

BD⊥AC    ∠ADB = ∠CDB = 90°

D is mid-point: AD = CD

BD = BD

ΔADB ≅ ΔCDB

AB = BC

5 0
2 years ago
Read 2 more answers
2x+5(x+1) = -8;<br><br> Can someone help me solve this problem step by step please?
mariarad [96]

Answer:

-13/7

Step-by-step explanation:

2x+5(x+1)=-8

2x+5x+5=-8

7x+5=-8

7x=-8-5

7x=-13

7x/7=-13/7

x=-13/7

4 0
2 years ago
Read 2 more answers
What is the period of the function y = 2 sinx
DanielleElmas [232]

Answer:

The period is 360° ( in radians, the period is 2π)

Step-by-step explanation:

For a sine/cosine (sinusoidal) function in the form

y = ASin(Bx-C) + D, we can say

A is the amplitude

360/B is the period

C is the phase shift

D is the vertical translation

<em>The function given is y = 2Sinx</em>

To find the period, we need 360/B. Since "B" is just "1", the period is

360/1 = 360

5 0
3 years ago
Read 2 more answers
Adam and his dad share the cost of the meal in the ratio of 2:3.
mel-nik [20]
Given that the meal cost is shared by Adam and his dad is in the ratio 2:3 respectively, and the amount of money paid by Adam's dad was 52.20, thus the
total cost of meal will be:
Total ratio will be (2+3)=5
total cost will be:
5/3*52.20
=87
Thus we conclude that the total cost of food was 87 pounds

7 0
3 years ago
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