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Llana [10]
3 years ago
5

What is z? 5z+8=4z+20 Once again im struggling and need help fast..=)

Mathematics
2 answers:
madreJ [45]3 years ago
7 0
5z+8=4z+20
-8 -8
5z=4z+12
-4z -4z
z=12
mixas84 [53]3 years ago
4 0
Z= 12 hope this helps
You might be interested in
1. How much more is of is of a gallon of water 3/8 than of a gallon of water ? 1/4
masya89 [10]

Answer: 3/8 * 4 = 12/8 = 1 4/8 = 1 1/2

your answer is 1 1/2

Step-by-step explanation:

8 0
1 year ago
The solids are similar. Find the missing dimensions.
DedPeter [7]

Answer:

b = 18 m

c = 19.5 m

h = 9 m

Step-by-step explanation:

Call the smaller solid the original one, and call the larger solid the scaled one.

1. Find the scale factor

scale factor = length in scaled one / corresponding length in original one

scale factor = 7.5/5 = 1.5

The scale factor is 1.5

That means if you multiply any linear dimension of the original one by 1.5, you get the corresponding dimension of the scaled one.

Let's check our scale factor to make sure it's correct.

We see that the 5 m side corresponds to the 7.5 m side.

5 m * 1.5 = 7.5 m

Multiplying an original length by the scale factor of 1.5 gives us the scaled up length, so our scale factor of 1.5 is correct. Now we apply the scale factor of 1.5 to find b, c, and h.

b corresponds to 12 m

b = 12 m * 1.5 = 18 m

c corresponds to 13 m

c = 13 m * 1.5 = 19.5 m

h corresponds to 6 m

h = 6 m * 1.5 = 9 m

Answer:

b = 18 m

c = 19.5 m

h = 9 m

8 0
3 years ago
Help on math please? Thanks
maks197457 [2]
Answer C

Domain are the first numbers without repeating the answers
Range are the second numbers without repeating the answers
6 0
4 years ago
Berto has $12 to put gas in his car. If gas costs $3.75 per gallon, which ordered pair relating number of gallons of
ElenaW [278]

Answer:This is approximately 3.2 gallons. So the coordinate on this line would be (3.2, 12).

Step-by-step explanation: If gas costs $3.75 per gallon and Berto has $12, then he can purchase 12/3.75 gallons. This is approximately 3.2 gallons. So the coordinate on this line would be (3.2, 12).

4 0
4 years ago
Read 2 more answers
Use any method to solve the equation. If necessary, round to the nearest hundredth.
vlada-n [284]

Here, in order to find the solutions to the quadratic equation - x² + x - 30 = 0, we will use factorization method.

In the method, we will split 30, in such factors, which when added or subtracted gives us 1,  and when multiplied gives us -30.

So, we will use, -5 and 6. When they are added they will give us 1 and when multiplied they will give us -30 as answer.

Now, the equation will be written as -

x² - 5x + 6x - 30 = 0

Taking common, we get

x(x - 5) +6(x-5) = 0

(x-5)(x+6) = 0

So, x - 5 = 0 and x +6 = 0, we will get, x = 5 and x = - 6

<u>Thus, the correct option is C). x = 5 and -6</u>

4 0
4 years ago
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