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Anit [1.1K]
3 years ago
8

Marla did 65 sit ups each day for 1 week. Use the distributive property to show an expression u can use to find the total number

of sit ups Marla did during the week
Mathematics
1 answer:
Debora [2.8K]3 years ago
8 0
<span>the total number of sit ups = 7(60 + 5)
                                          = 7 * 60 + 7 * 5
                                          = 420 + 35
                                          = 455

Hope it helps</span>
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CONCEPTS OF ALGEBRA<br> (question in picture)<br> PLEASE HELP!<br> 10 points
il63 [147K]

Hey there!

This equation we're given is a function. This means that we will get a certain output for each input. If your input is x, the output, or y, will be 0.3 of x plus 11.8. It appears that the independent variable (our x) is the age in the table and the height of the jump is the dependent variable (our y). We can plug some of the data into our function and see if it is true! We will use the first two columns of the table to test this out.

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

                                                   Column 1

Age: 22

Height of Jump in Inches: 15.4

15.4=0.3(22)+11.8

15.4=6.6+11.8

15.4=18.4

This is equation is false, so this data point does not match the given function. We can check with one more column just to make sure, but just given this we immediately know that the given equation is not a good fit for the data.

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

                                                   Column 2

Age: 24

Height of Jump in Inches: 17

17= 0.3(24)+11.8

17=7.2+11.8

17=19

This is equation is also false.

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

Therefore, this equation is not a good fit for the data given.

I hope that this helps! Have a wonderful day!

3 0
3 years ago
Slope:<br> what is the slope?
Len [333]

Answer: -2

Step-by-step explanation:

So basically I located the y-intercept first. Where is that? At the point (0,-2). Now from there, I found the nearest point on an intersecting grid line, in this case it would be (-1,0). So from the y-intercept, I looked at how many spaces I would have to move to get to (-1,0). You would have to go up 2 spaces and to the left 1 space. This is also written as 2/-1. Simplify this and you get -2! Hope this helped!

3 0
3 years ago
Ribbon sells for $3.75 per yard. Find the cost, in dollars, for 48 inches of ribbon.
Leto [7]

Answer:

4.9875

if rounding then 5 dollars

Step-by-step explanation:

7 0
3 years ago
How to solve for -3x squared + 2y squared + 5xy - 2y + 5x squared - 3y squared when x = 0.5 and y = -1/10??
Pani-rosa [81]

Answer:

0.44

Step-by-step explanation:

-3x^2 + 2y^2 + 5xy - 2y +5x^2 - 3y^2

Combine like terms

-3x^2 + 5x^2 = 2x^2 2y^2 - 3y^2 = -1y^2

2x^2 - 1y^2 + 5xy - 2y

Now plug in the solutions Note: it is easier if you have all decimals or all fractions (-1/10=-.1

2(0.5)^2 - 1(-0.1)^2 + 5(0.5)(-0.1) - 2(-0.1)

Simplify:

0.5 - 0.01 - 0.25 + 0.2

0.5 + 0.2 - 0.01 - 0.25

0.7 - 0.26

0.44

5 0
3 years ago
Shawn has $5 more than Rj and Riley has $10 less than Shawn. If there combined total is $414, how much does
ExtremeBDS [4]

Answer:

Rj has 138 dollars, Shawn has 143 dollars, and Riley has 133 dollars.

Step-by-step explanation:

Let's make the amount of money Rj has x, so Shawn would have 5+x dollars, and Riley would have (5+x)-10 dollars. Altogether they have 414 dollars, so you can create an equation.

x+(5+x)+((5+x)-10)=414\\3x+0=414\\3x=414\\x=138

Now that we know that x=138, we can substitute x into each equation.

Rj has 138 dollars, Shawn has 143 dollars, and Riley has 133 dollars.

5 0
2 years ago
Read 2 more answers
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