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Paladinen [302]
3 years ago
13

2.30+2.50+2.75+2.00​

Mathematics
1 answer:
Jet001 [13]3 years ago
4 0

Answer:

9.55 hope this helps :)

Step-by-step explanation:

  1

  2.30

  2.50

+ 2.75

  2.00

-----------

  9.55

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Which of the following could be the graph of 3x + 4y = 12?​
Elan Coil [88]

Answer:

A graph that goes through (4, 0), (8, -3), (0, 3), and (-4, 6)

Step-by-step explanation:

Hello!

To find what this looks like it is easier to put it into slope-intercept form which is y = mx + b

To get our equation to look like that we have to get y by itself

3x + 4y = 12

Subtract 3x from both sides

4y = -3x + 12

Divide both sides by 4

y =- \frac{3}{4}x  + 3

We now know the y-intercept is (0, 3)

Now we follow the slope to give us more points

More points are (4, 0), (8, -3), and (-4, 6)

The answer would be a graph that goes through those points.

Hope this helps!

6 0
3 years ago
Please help me with this question!
gavmur [86]
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on

now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%

anyway   thus

\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{first sol'n}&11&x&11x\\
\textit{second sol'n}&4&0.55&2.20\\
------&-----&-------&-------\\
mixture&y&0.77&0.77y
\end{array}\\\\
-------------------------------\\\\
\begin{cases}
11+4=y\implies 15=\boxed{y}\\
11x+2.2=0.77y\\
----------\\
11x+2.2=0.77\cdot \boxed{15}
\end{cases}

solve for "x"
6 0
3 years ago
The number of sticks of gum varies directly as the number of packages. There are 36 sticks of gum in 2 packages. Suppose you hav
tangare [24]

Answer:

Each packet gives you 18 sticks of gum. If you asked how many in 5 packets it would be 90 sticks.

8 0
2 years ago
2) Which of the following represents an equation of a line parallel to one whose equation is 2y + 8x = 18?
Reika [66]
Parallel has the same slope
2y + 8x = 18
Make it slope in form: y = mx + b
Divide the equation by 2
y + 4x = 9
Now subtract 4x
Y = -4x + 9
The slope is -4
Which equation also has same slope?

Solution: A
3 0
3 years ago
Read 2 more answers
Annabella wants to make the most economical decision so she chose the 3-year car loan so that after the loan is paid off to be a
Novay_Z [31]

Answer:

  • Annabella will save $4950.11 after 2 years.

Step-by-step explanation:

<h3>Given</h3>

  • Periodic payment P = $200,
  • Period t = 2 years,
  • Number of compounds, monthly n = 12,
  • Interest rate, r = 3.2% = 0.032.

<h3>To find</h3>

  • Future value of saving, F

<h3>Solution</h3>

Use periodic compound formula:

F=P\cfrac{(1+r/n)^{nt}-1}{r/n}

Substitute the values and calculate:

F=200\cfrac{(1+0.032/12)^{12*2}-1}{0.032/12} =4950.12     rounded

6 0
1 year ago
Read 2 more answers
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