Evaluate the expression if x=2 and y=4
4x+3y
a.20
b.21
c.15
d.13

Answers

Answer 1

Answer:

The required answer would be 14 when substituting x=2 and y=4 in the expression 4x+3y which is the correct answer would be an option (A).

What is the expression?

Expressions are defined as mathematical statements that have a minimum of two terms containing variables or numbers.

What are Arithmetic operations?

Arithmetic operations can also be specified by adding, subtracting, dividing, and multiplying built-in functions.

+ Addition operation: Adds values on either side of the operator.

For example 4 + 2 = 6

* Multiplication operation: Multiplies values on either side of the operator

For example 4*2 = 8

We have to evaluate 4x+3y when substitute x=2 and y=4

We have been given that expression as

⇒ 4x + 3y

Substitute the values of x = 2 and y = 4 in the above expression, and we get

⇒ 4(2) + 3(4)

⇒ 8+ 12

⇒ 20

Therefore, the required answer would be 20.

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Answer 2

Answer: $x=2 \ny=4 \n \n4x+3y=4 * 2 + 3 * 4 =8+12=20 \Leftarrow \hbox{answer A}$

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4. The space shuttle travels at about 28,000 km per hour. Using that information, estimate how many hours it will take the shuttle to reach Saturn from Earth. (Assume both planets are aligned with the sun and are on the same side of the sun.) Show your work. Convert your answer into scientific notation if necessary.

Divide £50.00 in the ratio of 1:4 SOMEBODY HELP!!!!

Answers

1+4=5
50.00/5=10
1 unit is 10
1 unit to 4 unit

10 times 1=10
10 times 4=40

1:4
10:40

a student sells small and large greeting cards decorated at a craft fair. The small cards coast 3 dollars per card, and the large cards coast 5 dollars per card. The student collects 95 for selling a total of 25 cards. what are the variables what is the system how do you graph it how many of each card did the student sell please and thank you

Answers

$x-the\ small\ cards\ny-the\ large\ cards\n\n \left\{\begin{array}{ccc}3x+5y=95\nx+y=25\end{array}\right\n\left\{\begin{array}{ccc}5y=-3x+95&/:5\ny=-x+25\end{array}\right\n\left\{\begin{array}{ccc}y=-(3)/(5)x+19\ny=-x+25\end{array}\right\n\n----------------------$

$y=-(3)/(5)x+19\n\nfor\ x=0\to y=-(3)/(5)\cdot0+19=19\to A(0;\ 19)\nfor\ x=10\to y=-(3)/(5)\cdot10+19=-6+19=13\to B(10;\ 13)\n----------------------------\n\ny=-x+25\n\nfor\ x=0\to y=-0+25=25\to C(0;\ 25)\nfor\ x=10\to y=-10+25=15\to D(10;\ 15)\n----------------------------\n\na\ graph\ on\ the\ picture\n\nAnswer:x=15\ and\ y=10.$

15 small and 10 big cards to the days if you want to.

A farmer uses a lever to move a large rock. The force required to move the rock varies inversely with the distance from the pivot to the point the force is applied. A force of 50 pounds applied to the lever 36 inches from the pivot point of the lever will move the rock. Which function models the relationship between f, the amount of force applied to the lever and d the distance of the applied force from the pivot point?

Answers

Answer:f=1800/d Inverse proportion function. Provided f is in pounds & d is in inches.

Step-by-step explanation: the relationship between f & d is inverse proportion.

A constant k has to be derived from the relationship.

If f is inversely proportional to d then f=k(1/d)

K= f X d

= 50 X 36

=> constant K=1800.

Use the image shown and a scale factor of 1/2 to findthe pre-image. Which is the pre-image of A'?
• (-1, -1)
• (-2,-2)
•(-4,-2)
•(-4,-4)

THE ANSWER IS D

Answers

The pre-image of A' is (-4,-4), and the correct option is D.

What is the scale factor?

A scale factor in math is the ratio between corresponding measurements of an object and a representation of that object.

The image is shown and a scalefactor of 1/2 to find the pre-image.

$\rm Scale\ factor = (Dimension\ of\ New \ Shape)/(Dimension\ of \ Original \ Shape)\n\nDimension\ of\ New \ Shape= Scale\ factor * Dimension\ of \ Original \ Shape\n\nA' =(1)/(2)(-8, \ -8)\n\nA' =(-4,-4)$

Hence, the pre-image of A' is (-4,-4), and the correct option is D.

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Answer:

the answer should be D. or (-4, -4)

hope this helps

The solution to an equation is 21

Answers

an solution to an equation = 21 would be something like 2p + 7

if you wanna know how to solve this
here is how:
Simplifying 2p + 7 = 21 Reorder the terms: 7 + 2p = 21 Solving 7 + 2p = 21 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2p = 21 + -7 Combine like terms: 7 + -7 = 0 0 + 2p = 21 + -7 2p = 21 + -7 Combine like terms: 21 + -7 = 14 2p = 14 Divide each side by '2'. p = 7 Simplifying p = 7

The wingspan of one butterfly is 1 9/16. The wingspan of another butterfly is 1 5/8 inches. write an inequality comparing the two wingspan