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vladimir1956 [14]
3 years ago
15

Simplify the expression −2.3(4.1a−1.7a)+1.9(−5.4b)

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
7 0

Answer:

-5.52a-10.26b

Step-by-step explanation:

2.3*4.1=9.43

2.3*1.7=3.91

1.9*5.4=10.26

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

-9.43a+3.91a-10.26b

-5.52a-10.26b

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Y=x +5<br> 5x + 2y=1<br><br> Can you show the steps thanks
lubasha [3.4K]

Answer:

(-9/7,-26/7)

[more detailed at the bottom of the explanation]

Step-by-step explanation:

I am assuming that this is a system of equations...

So, knowing that y is equal to x + 5, you would plug that in the second equation and find x. Then you would plug x and find y.

—————

Step 1)

Equation 1:

y = (x + 5)

Equation 2:

5x + 2y = 1

Equation 2 can also be written as:

5x + 2(x+5) = 1

I wrote x+5 instead of y because the first equation tells us that y is equal to x + 5.

—————

Step 2)

Solve for x .

5x + 2(x+5) = 1

5x + 2x + 10 = 1

7x + 10 = 1

7x = 1 - 10

7x = -9

x = -9/7

—————

Step 3)

Plug the x value back in the first equation.

y = -9/7 + 5

y = -26/7

—————

Solution:

x = -9/7

y = -26/7

In ordered pair form:

(-9/7,-26/7)

————— ————— —————

Hope this helps !!!!!!!

5 0
4 years ago
Katrina is shopping for berries that cost $2.19 per pound. She has 4.5 pounds of raspberries and 3.25 pounds of blueberries in h
slega [8]
   2.19        2.19          9.855 + 7.1175 = (approximately) <u>$16.97</u>
x 4.5       x 3.25
----------- ----------
9. 855     7.1175
I hope this helps!!
8 0
3 years ago
Read 2 more answers
Shawn picked some vegetables from his garden.he picked 2.234 pounds of corn 2.205 pounds of tomatoes and 2.25 pounds of potatoes
Tatiana [17]

Answer: The correct answer is H.

Step-by-step explanation: The correct order of the weights from largest to smallest is shown in choice H. The correct order is 2.25, 2.234, 2.205.

5 0
3 years ago
Please help me!<br> Find WX.
Fynjy0 [20]
So WX is 7y +4 and XY is 21, and when you add those lines you get the whole thing, which is 12y so write that like an equation
12y = 7y+4+21
12y = 7y+25
5y = 25
y = 5
3 0
3 years ago
Somebody help me plz with this question?
bonufazy [111]

Answer:

typing this answer to get points hope u get ur answer soon :)

Step-by-step explanation:

3 0
3 years ago
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