10 oranges and 20 grapefruits weigh 35 pounds total. 16 oranges and 10
grapefruits weigh 23 pounds total. How much would 13 oranges and 15
grapefruits weigh?
A 28 pounds
B 29 pounds
C 30 pounds
D 58 pounds

Answer:

B

Step-by-step explanation:

oranges weigh 0.5 and grapefruits weigh 1.5

The required: 13 oranges and 15 grapefruits would weigh 29 pounds.

The correct option is A.

One or many equations having the same number of unknowns that can be solved simultaneously are called simultaneous equations. And the simultaneous equation is the system of equations.

Let's use a system of equations to solve this problem:

Let's call the weight of an orange "x" and the weight of a grapefruit "y". Then we can write:

10x + 20y = 35 (equation 1)

16x + 10y = 23 (equation 2)

We want to find the weight of 13 oranges and 15 grapefruits, which we can represent as:

13x + 15y

In this case, we can multiply equation 1 by -8 and equation 2 by 15:

-80x - 160y = -280 (equation 1, multiplied by -8)

240x + 150y = 345 (equation 2, multiplied by 15)

Now we can add the two equations to eliminate y:

160x = 65

Solving for x, we get:

x = 65/160

Now we can substitute this value of x back into one of the original equations to solve for y. Let's use equation 1:

10(65/160) + 20y = 35

Simplifying this equation, we get:

13/32 + 2y/4 = 7/2

Multiplying both sides by 32, we get:

13 + 16y = 112

Solving for y, we get:

y = 99/16

Finally, we can substitute these values of x and y into the expression for 13 oranges and 15 grapefruits:

13x + 15y = 13(65/160) + 15(99/16) = 29.0625

Therefore, 13 oranges and 15 grapefruits would weigh approximately 29.0625 pounds, which is closest to answer B, 29 pounds.

To learn more about the system of equations;

brainly.com/question/13729904

#SPJ2

question in the image

1/2(6x+4) =5(2x-8) im not sure what order to do things in or really how to do it

I need help with question 4

What is the y-intercept of the line 3x – 7y = 42?

Is 1/2 bigger or less then 20%​

A lemonade recipe calls for the juice of 5 lemons, 2 cups of water, and 2 tablespoons of honey.
Invent four new versions of this lemonade recipe:

1) One that would make more lemonade but taste the same as the original recipe.
2) One that would make less lemonade but taste the same as the original recipe.
3) One that would have a stronger lemon taste than the original recipe.
4) One that would have a weaker lemon taste than the original recipe.
Pls, I'm struggling right now lol.

I’ve been trying to get help on this app but no one is helping me at all . So again, if someone can help me I would appreciate it. Please!!. I’ll give a brainlest

1). What is y when x = 40?
A) about 120
B) about 150
C) about 190
D) about 210

2). What is x when y=400?
A) about 72
B) about 74
C) about 79
D) about 83

Pleaseee help !!!

nefvermine frick sheldon tho

I don't know the answer ​

-11 + 9(x + 1) = 4(1 + 3x) - 3

-10 |h+5| -3= -83
what is the answer to this the topic is absolute value.

What the heck is this?

What is the slope of the line that goes through the points (1,-2) and (3,6)?

A.) -4


B.) 2


C.) 4


D.) 1

The table shows ticket prices for the local minor
league baseball team for fan club members and
non-members. For how many tickets is the cost the
same for club members and non-members?

2. Martin has $100 to buy a new MP3 player and music. The MP3 player costs $85 and each song download
costs $1.50. How many songs can Martin afford?
a. 85+1.50d 5 100
b. 85d +1.50 < 100
C. 85+1.50d < 100
d. 1.50d + 100 < 85

please help me i desperately need it

help ASAP!! please. i dont get it!

Is 12/3 a proportion

What is the missing angle measure, in degrees, for figure 1, part a? What is the missing angle measure, in degrees, for figure 1, part c? What is the missing angle measure, in degrees, for figure 1, part d? What is the missing angle measure, in degrees, for figure 1, part f?

What are the 2 points on the graph? Choose 2

A. (1,2)
B.(2,1)
C.(-1,2)
D.(0,0)

A package of 4 pairs of insulated socks costs ​$35.56 What is the unit price of the pairs of socks​?

Find the range for the measure of the third side of a triangle given the measures of the other two sides are 4 and 8

At the zoo, the ratio of elephants to hippos is 1.2. So for every elephant, there
are hippos

Which of the following is not a rational number

What is the relationship between the 7’s in 771,568

does anyone know how to use substitution for
x+y=21
2x-15=y

Levi has a job offer in which he will receive $800 per month plus a commission of 2% of the total price of the cars that he sells. At his current job, he receives $1200 per month plus a commission of 1.5% of his total sales. How much must he sell per month to make the new job a better deal than his current job? Define variables, write a system of equations, and solve.

Solve for x: 3 < x +3 < 6

a function can be classified as one-to-one correspondence, one-to-many correspondence and many-to-one correspondence.​

Anyone want to help me with math
Solve 1−2/5 < 5x+2/5−4x