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klemol [59]
3 years ago
9

Solve each equation:

Mathematics
2 answers:
serious [3.7K]3 years ago
6 0

Step-by-step explanation:

1) -7 (divide -28 by 4 to isolate x)

2) -8 (two negatives = a positive, so it's x + 6 = -2, then subtract 6 from both sides)

3) 5 (subtract 4 from both sides, and multiply each side by -1)

4) 2 (subtract 7 from both sides, then divide by -3)

5) -3 (add 11 to both sides then divide by 25)

svetlana [45]3 years ago
3 0
3. The answer is 13. Fathers first person is incorrect
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Find the area and perimeter of the shaded figure
puteri [66]

Answer:

Area - 6 unit^2   Perimeter - 10 units

Step-by-step explanation:

The shaded figure is 3 units long and 2 units high.

L = 3  W = 2

A = LW

A = 3 x 2 = 6 unit^2

Perimeter = 2L + 2W

P = 2(3) + 2(2)

P = 6 + 4 = 10 units

6 0
3 years ago
Sam runs a lemonade stand. One day he collected $6.55 in nickels and dimes. The number of nickels was 6 more than half the numbe
vampirchik [111]

Answer:

Total number of dimes collected = 50

Step-by-step explanation:

Let the number of dimes collected = d

And the number of nickels collected = n

On day collection in nickels and dimes = $6.55

Since, 1 nickel = $0.05

Therefore, 'n' nickels = 0.05n

And 1 dimes = $0.10

Value of 'd' dimes = $0.10d

Total value of 'n' nickels and 'd' dimes = $(0.05n + 0.10d)

So the equation for the total value will be,

0.05n + 0.10d = 6.55

5n + 10d = 655 --------(1)

Number of nickels was 6 more than half the number of dimes.

n = \frac{d}{2} + 6 ------(2)

By substituting the value 'n' from equation (2) to equation (1)

5(\frac{d}{2} + 6) + 10d = 655

\frac{5d}{2} + 30 + 10d = 655

\frac{25d}{2} = 655 - 30

25d = 625 × 2

d = \frac{1250}{25}

d = 50

Therefore, total number of dimes collected = 50

6 0
3 years ago
Help me with 2 plz!!!!!!!!!!!!!
pishuonlain [190]
I think it is 51.5, cause 412÷8 =51.5
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If you wanted to draw the trend line for the given scatter plot, you would what.
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Trendline is drawn over the data points of the scatter plot in order to project which way the plot is directed. If we want to draw the trend line, we should consider the points that will best represent the data. Therefore, the answer to this item is letter C. 
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4 years ago
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Hey any answer please be quick
LenKa [72]
I’ve attached my answer...
Hope it helps!

4 0
3 years ago
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