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kotykmax [81]
3 years ago
11

Make x the subject of the formula x a + b = c

Mathematics
1 answer:
-BARSIC- [3]3 years ago
6 0

Answer:

x=\dfrac{c-b}{a}

Step-by-step explanation:

The given formula is :

ax+b=c

We need to solve it for x.

Subtract b from both sides,

ax+b-b=c-b

ax = c-b

Dividing both sides by a.

x=\dfrac{c-b}{a}

So, the value of x is equal to \dfrac{c-b}{a}.

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If 1 cm represents 30 km on a map and colorado is shown by a 20cm by 15 cm rectangle on the map, what is the approximate actual
zubka84 [21]

Answer:

20*30km = 600km

15*30km = 450km

600km * 450km = 270000 km^2

Step-by-step explanation:

assuming 1cm --- 30km causes that 2cm --- 60km, 3cm --- 90km, 4cm --- 120km etc. Notice that number of km's is 30 times greater than the number of cm's on a map

using this logic, you calculate both real dimensions of Colorado by multiplying 20*30 = 600 km and 15*30 = 450km

Then we use a formula of an area of a rectangle A=a\cdot b assuming a=600km, \ b=450km and get A=600\cdot 450=270000km^2 which is an actual area of Colorado

3 0
3 years ago
Elsie pays $8.99 for a one-pound canister of Georgia pecans. Write and solve a proportion to determine the cost of 4
ch4aika [34]

Answer:

$ 35.96

Step-by-step explanation:

Let x be the cost ( in dollars ) of 4 ounces of the pecans,

So, the ratio of the cost and ounces needed = \frac{x}{4}

Also, the cost of 1 ounces of pecans is $ 8.99,

Thus, the ratio of the cost and ounces needed = \frac{8.99}{1}

Hence, we can write,

\frac{x}{4}=\frac{8.99}{1}

Which is the required proportion,

By cross multiplication,

x = 4 × 8.99 = 35.96

Therefore, $ 35.96 is the cost of 4 ounces of the pecans.

6 0
3 years ago
Read 2 more answers
Will Mark Branliest What would be the best way to display both the overall shape and individual values of the data below? dot pl
liubo4ka [24]

Answer:

Stem and leaf

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
BRAINLIEST!!<br> Please at least take a look
Bad White [126]

Answer:

The answer to your question is below

Step-by-step explanation:

1) The triangles are similar by the AA postulate so use proportions to find x.

          x/207 = 170/90

solve for x

          x = 207(170/90)

          x = 207(1.89)

         x = 391 ft

2) These triangles are similar so use proportions to solve it

          x/138 = (x + 60)/207

         207x = 138(x + 60)

         207x = 138x + 8280

          207x - 138x = 8280

                      69x = 8280

                         x = 8280/69

                         x = 120

4 0
3 years ago
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PLEASE HELP ME!! It’s due
tatyana61 [14]

Answer:

dont cheat

Step-by-step explanation:

cheaters never win bro

5 0
3 years ago
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