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balu736 [363]
4 years ago
11

Which expression is equivalent to −30+(−40)+(−70) ?

Mathematics
2 answers:
Sedaia [141]4 years ago
7 0
-30+(-40)+(-70) = -140

-(30-40)+(-70) = -60
-30+(-70)+(-40) = -140
30+40+70 = 140
-30-(40-70) = 0

So your answer is -30+(-70)+(-40)
denis23 [38]4 years ago
5 0

Answer:

the second on 222222222222

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Food a baker sells bread for $3 a loaf and rolls for $1 each. the baker needs to sell $24 worth of baked goods by the end of the
Veseljchak [2.6K]

Answer:

3x+y=24

Step-by-step explanation:

Let the loaves sold be x and rolls sold be  y.

Given:

Cost for 1 loaf of bread = $3

∴ Cost of x loaves of bread = 3x

Cost of 1 roll of bread = $1

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Total cost of the baked goods = $24

Therefore, as per question,

3x+1y=24\\3x+y=24

Now, the graph is shown below.

The vertical axis represent the rolls sold and the horizontal axis represent the loaves sold.

Draw a horizontal line from 12 mark on the vertical axis to the given line to meet at point A. Now, from point A, draw a vertical line to meet the horizontal axis at point B. Point B is the number of loaves sold.

From the graph, loaves sold are 4 when rolls sold are 12.

6 0
3 years ago
Help me solve those show work 3(2a-5)=12-7a, 27=3c-3(6-2c)and 6c-8-2c=-16
Nadusha1986 [10]

1) 3(2a-5)=12-7a

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Now, add 15 to both sides. This leaves you with 6a=27-7a.

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Now, you can finally divide 13a on both sides. This leaves you with a=27/13

2) 27=3c-3(6-2c)

First, distribute the 3.This leaves you with 27=3c-18+6c

Now, combine like terms/simplify. This leaves you with 27=9c-18.

Now, add 18 to both sides. This leaves you with 45=9c.

Now, you can finally divide 9 on both sides. This leaves you with 5=c.

Lastly, use the reflexive property. This leaves you with c=5.

3) 6c-8-2c=-16

First, combine your like terms. This leaves you with 4c-8=-16.

Now, add 8 to both sides. This leaves you with 4c=-8.

Now, divide 4 on both sides. This leaves you with c=-8/4.

Finally, you can simplify the fraction. This leaves you with c=-2.


Comment if you have any questions!

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3 years ago
A recipe for fruit salad includes 1/5 cup of grapes for 3 servings. How many cups of grapes are needed for 50 servings of this f
choli [55]

Answer:

300 is your answer

Step-by-step explanation:

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Formas de encontrar el numero de triángulos en un polígono
monitta

Answer:

n-2

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Otrada [13]

Answer:

y = 3/2x+3

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