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4 years ago

How to spimplify the expression 19z-19z =

Mathematics

1 answer:

raketka [301]4 years ago

8 0

Answer:

Step-by-step explanation:

19z-19z=0

this is because z is always equivalent to itself, and therefore 19z is equivalent to 19z

When you subtract two numbers that are equivalent, you will always get 0

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Mr. Standford’s greenhouse has the dimensions shown. The volume of the greenhouse is 90 cubic yards. Find the missing dimension

salantis [7]

Hey read the image I have attached. Ignore what I am typing here I need to type 20 characters.

3 0

4 years ago

Plz help me with all 4 questions this is worth 10

vfiekz [6]

Hello! I can help you with this! It asks for a ratio, so we have to solve it in that format. Although, there are different ways of solving it.

1. Okay. So a ratio for this would be 3/4 : 5/6. To divide fractions, we must keep the first fraction the same, change the division into a multiplication symbol, and flip the second fraction over. So it would look like this: 3/4 * 6/5. Multiply straight across (n*n/ d*d). When you do that, you get 18/20 or 9/10 in simplest form. The landscaper's rater is 9/10 acres per hour.

2. The ratio for this question is 9/4 : 1/2 For the next question, we repeat the steps for dividing fractions. Keep, Change, Flip. 9/4 * 2/1 is 18/4 or 4 1/2 in simplest form. Sally's running speed is 4 1/2 miles per hour.

3. Okay. Going back to question #1, the unit rate was 9/10 acres per hour. All we have to do now is multiply that number by 4. To multiply fractions, do it straight across. 9/10 * 4/1 is 36/10 or 3 3/5 in simplest form. A landscaper can mow 3 3/5 acres in 4 hours.

4. Then we repeat the steps done in question #3, and incorporate it in this problem. Going back to question #2, the unit rate was 4 1/2 miles per hour. All we have to do is multiply by 3. 9/2 * 3/1 is 27/2 or 13 1/2 in simplest form. Sally can run 13 1/2 miles in 3 hours.

3 0

4 years ago

Anyone know how to do this

Nonamiya [84]

Answer:

x ≈ 4

Step-by-step explanation:

We use tan∅ to solve this:

tan30° = x/7

7(tan30°) = x

x = 4.04145

Remember that tangent is opposite over adjacent.

4 0

4 years ago

We want to solve the following system using the Gauss-Jordan (i.e., Elementary Row

Dennis_Churaev [7]

Answer:

( 2 ,-1 ,3)

Step-by-step explanation:

x-2y + z = 7

3x - 5y + z = 14

2x- 2y +z =3

WILL YOU MARK ME BRAINLIEST 

4 0

3 years ago

Read 2 more answers

if I set off for the market,a distance of 11km at 10am. And walk at an average speed of 3km per hour,At what time will I reach t

earnstyle [38]

Answer:

At 1:40 pm you will reach the market.

Step-by-step explanation:

Distance (d) = 11 km

Average speed (v) = 3 km/h

Formula:

$\rm Average \: speed = \dfrac{Distance}{Time} \\ \\ \rm 3 = \dfrac{11}{t} \\ \\ \rm t = \dfrac{11}{3} \\ \\ \rm t = 3 \frac{2}{3} \\ \\ \rm t = 3 hr \: 40min$

It will take 3 hours 40 minutes to reach the market.

So, if you set off for the market at 10 am you will reach market by 1:40 pm (10 am + 3hr 40min).

7 0

2 years ago