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Oksanka [162]
2 years ago
13

5x + 3y, when x = 4, and y=-3​

Mathematics
2 answers:
Pepsi [2]2 years ago
6 0

Answer:

5x+3y, when x=4 and y= -3

5(4)+3(-3)=

20+ (-9)=

11

Step-by-step explanation:

Hope this helps. :)

Montano1993 [528]2 years ago
3 0

Answer:

5x + 3y = 11

Step-by-step explanation:

x = 4 y = -3

=5x + 3y

=5(4) +3(-3)

=20 + (-9)

=11

When a number and variable are right beside each other it means that the number and the variable are being multiplied together, for example 5x. If x = 4 then it means that 5 and 4 are being multiplied.

(it might be wrong because I haven't done algebra in a long time)

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Batting Averages Your batting average is 0.244, and you have been at bat 82 times. How many hits do you have?
alexandr1967 [171]

Answer:  20

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

Short Explanation:

Multiply the two numbers to get 0.244*82 = 20.008 which rounds to 20

This is the expected or estimated number of hits.

-------------

Longer Explanation:

The reason why this works is based on how the batting average formula is set up. Ignoring things like singles, doubles, triples, homeruns, and just focusing on hits, we have

batting average = (number of hits)/(number of at bats)

the term "at bat" in baseball means "attempts"

So if you hit 10 times out of 20 attempts, then your batting average is 10/20 = 0.500 which means you hit half the time

For something like 0.244, this means 244/1000 and you hit 244 times out of 1000 attempts.

When we multiply the batting average with the number of at bats, then the "at bat" units will cancel leaving us with just the number of hits.

The diagram below shows how the units cancel.

From here we just multiply (244/1000) with 82 and you'll end up with 20.008 as before.

8 0
2 years ago
A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 1/3x. Find the height of
slavikrds [6]

Answer:

The height of the cone h = 27(x^4)y

Step-by-step explanation:

Firstly, we calculate the volume of the cylinder.

Mathematically, the volume of the cylinder is pi * r^2 * h

using the radius x and height y

The volume V of the cylinder is ;

V = pi * x^2 * y

Now we know they have the same volume V, the formula for the volume of a cone is ;

1/3 * pi * r^2 * h

Substituting the values of r to be 1/3x and the height which is not given here left as h, we have the volume of the cone to be;

V = 1/3 * pi * (1/3x)^2 * h = pi * x^2 * y

The pi gives way as it cancels out on both sides and we have the following;

h/27x^2 = x^2y

Mathematically h = x^2 * y * 27x^2

h = 27(x^4)y

p.s: I personally feel the radius of the cone was to be given as x/3 and not 1/3x . It is in that way we can have the height of the cone purely in y terms and no x

8 0
3 years ago
Pls help LOL it’s pretty easy but like I don’t have time
MakcuM [25]

Answer:because it’s just reversed

Step-by-step explanation:

3 0
2 years ago
A grocery store sells Swiss cheese for $5.90 a pound. To the nearest cent, what is the cost per ounce of Swiss cheese? Round you
Debora [2.8K]

Answer:

37 cents

Step-by-step explanation:

Given that a grocery store sells Swiss cheese

Rate per pound = 5.90 dollars

1 pound =16 oz,

Hence cost of 16 ounces is given as 5.90

SO cost of one ounce of Swiss cheese =\frac{5/90}{16} =0.36875

Or 36.875 cents

Round off to nearest cent as

37 cents since after decimal digit 8 is more than 5.

Hence answer is 37 cents

8 0
3 years ago
Gina measured the amount of water her friends drink each day in gallons. The line plot shows the measurements.
vova2212 [387]

Line plots are used to represent data using lines and dots

The difference between the greatest amount of water and the least is 1/2

From the line plot (see attachment), we have the following parameters:

Least = 8\frac 28

Greatest = 8\frac 68

<h3>Calculating the difference</h3>

The difference (d) is then calculated as:

d =Greatest -Least

So, we have:

d =8\frac 68 -8\frac 28

Subtract the common terms (8)

d =\frac 68 -\frac 28

Take LCM

d =\frac {6-2}8

d =\frac {4}8

Reduce the fraction

d =\frac {1}2

Hence, the difference between the greatest amount of water and the least is 1/2

Read more about line plots at:

brainly.com/question/3521995

7 0
2 years ago
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