1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gekata [30.6K]
1 year ago
13

4. Find the value of x & y from the following equation 4x+5y=90, x+y=20 a. 10, 15 b. 10, 5 c. 10, 8 d. 10, 10​

Mathematics
2 answers:
Mazyrski [523]1 year ago
6 0

Answer:

d. 10, 10

Step-by-step explanation:

4(10)+5(10) = 40 + 50 = 90

10 + 10 = 20

Hope this helps

ira [324]1 year ago
3 0

An equation is formed of two equal expressions. In the two of the given equations, the value of x and y are 10 and 10, respectively. The correct option is D.

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given the two of the equation, which can be named as,

4x+5y=90   ...... equation 1

x+y=20   ............ equation 2

Solve the second equation for x,

x + y = 20

x = 20 - y ................ equation 3

In the first equation substitute the value of x from the third equation,

4x + 5y = 90

4(20 - y) + 5y = 90

Solving the equation for y,

80 - 4y + 5y = 90

y = 90 - 80

y = 10

Substitute the value of y in the second equation, to get the value of x,

x + y = 20

x + 10 = 20

x = 20 - 10

x = 10

Hence, In the two of the given equations, the value of x and y are 10 and 10, respectively.

Learn more about Equation here:

brainly.com/question/10413253

#SPJ5

You might be interested in
SOMEONEEEE HELPPP MEEEEE PLEASEEEE!!!!
Nuetrik [128]

Answer:

{ \tt{  \tan(x) =  \frac{opposite}{adjacent}   }} \\  \\ { \tt{ \tan( \theta)  =  \frac{30}{16} }}

5 0
3 years ago
Edgar owns 234 shares of Cawh Consolidated Bank, which he bought for $21.38 apiece. Each share pays a yearly dividend of $3.15.
trapecia [35]

Answer: B. The stocks have a yield 6.84 percentage points greater than that of the bonds.

Step-by-step explanation:

Firstly, the yield for stocks will be calculated as:

= return/ investment cost

= $3.15/$ 21.38

= 0.14733395

= 14.73%

The yield for bonds will be calculated as:

= Return/Investment cost

Return = 1,000 x 8.3% = 83

Investment cost = 1,000 x 105.166/100 = 1051.66‬

Yield = 83/1051.66

= 0.07892284

= 7.89%

Then, the difference between the yield will be:

= 14.73% - 7.89%

= 6.84%

Therefore, the stocks have a yield 6.84 percentage points greater than that of the bonds.

8 0
3 years ago
Find the vertex of the quadratic function: y= 2x^2 - 12x + 9
masha68 [24]

Answer:

6+_3√2/2

Step-by-step explanation:

y=2x²-12x+9

y=6+3√2/2

4 0
3 years ago
Alex invests his money in an account paying 2% interest compounded semiannually. What is the effective annual yield on this acco
Travka [436]

Answer: 2.01%.

Step-by-step explanation:

Suppose Alex invests $1 into the account for one year. The formula is A=P0⋅(1+rk)N⋅k with P0=$1. We know that r=0.02 and k=2 compounding periods per year. Now, N=1 year. Substituting the values we have A=$1⋅(1+0.022)2=$1.0201. Now, to calculate the effective annual yield, we will use the formula rEFF=A−P0P0. rEFF=1.0201−11=0.0201 or 2.01%. When rounded to two decimals, rEFF=2.01%. However, do not include the % in your answer.

3 0
3 years ago
The side lengths of a triangle are 12, 14, and x units
Orlov [11]

Answer: x=14

Step-by-step explanation: have a good day

6 0
2 years ago
Other questions:
  • How do you divide 25kg in a ratio of 2:3:5
    15·1 answer
  • Write an equation in standard form for the circle?
    15·1 answer
  • What is the value of n?<br><br> A. 24 <br> B. 9<br> C. 26<br> D. 14
    9·1 answer
  • In a zoo there are 21 Lions.<br> 1/3<br> of them are male. How many females are in the zoo?
    10·2 answers
  • 10. If x = -2, y=-6 and z= 4, find the value of 4xy<br>Z​
    9·1 answer
  • Help soon eeeeeeeeeeeeeeeeeee
    12·2 answers
  • If p = 12 and q = 3, evaluate 4p – q.
    12·2 answers
  • What is the value of the sum 1/3 + 2/3+ 2/3+ 4/3 + 5/3+6/3+7/3+8/3
    5·1 answer
  • Please help thanks in advance also best answer get's brainlest
    13·1 answer
  • An electrician charges $32 per home visit plus an additional $22.75 per hour. He arrives at a costumers home at 9:00am. The fina
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!