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Zigmanuir [339]
3 years ago
15

Which of the following equations have z = 4?

Mathematics
1 answer:
evablogger [386]3 years ago
7 0

Answer:

B and D

Step-by-step explanation:

7z -1 = 27 46 - 8z = 14

+1 +1 -46 -46

7z = 28 -8z = -32

/7 /7 /-8 /-8

z = 4 z = 4

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Ratioz rate unit rate <br>I have a quiz tmr 7th grade I need to learn ratio, rate unit rates!!! ​
posledela

Alright! I'll help you. Let me tell you what's ratio, rate unit rates all about! :D

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. If you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

What is the difference between a unit rate and a ratio?

Guide the discussion so that students understand that a ratio is simply the quotient of two numbers, while a rate is the ratio of two measurements that have different units (like miles and hours, or dollars and ounces). Reinforce the fact that a rate is usually expressed in per unit form, where the denominator is 1.

What are some examples of ratios?

In mathematics, a ratio is a relationship between two numbers indicating how many times the first number contains the second. For example, if a bowl of fruit contains eight oranges and six lemons, then the ratio of oranges to lemons is eight to six (that is, 8:6, which is equivalent to the ratio 4:3).

Is a rate always a ratio?

Rates and ratios. ... A rate is a little bit different than the ratio, it is a special ratio. It is a comparison of measurements that have different units, like cents and grams. A unit rate is a rate with a denominator of 1.

How do I find the unit rate?

To get the unit to equal 1, divide both numbers by the denominator; your answer is the number you get by dividing the numerator by the denominator. Use this method to calculate unit cost, too—you're calculating how much 1 item is worth, after you're given the amount that multiple items cost.

Here are some questions and how to answer them to help you! I hope this helps you! c:

5 0
3 years ago
What expression is equivalent to 36a-27
mezya [45]

Answer:

Another expression:  9*(4a - 3)

Step-by-step explanation:

Though  36a - 27 is the simplest form we can factor it

36a - 27 =  9* (4a - 3)

5 0
3 years ago
Which statement describes the translation of y=-1/2(x-2)^2-2 from standard position?
Masteriza [31]
Y = x^2 is the parent function.
y = (x - 2)^2 would translate 2 units to the right
y = (x - 2)^2 - 2 would translate 2 units to the right and also 2 units down
y = - (1/2) (x - 2)^2 - 2
would reflect the parabola upside down, and also make it wider
6 0
3 years ago
Estimate a 15% tip on a dinner bill of $72.13 by first rounding the bill amount to the nearest ten dollars?
mixas84 [53]

Answer:

the tip is $10.5 = $72.15= $70*.15+ $10.5

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Perform the indicated operation. <br> f(x) = x^3 + 5x<br> g(x) = 4x<br> Find (f . g)(x)
cestrela7 [59]

Step-by-step explanation:

f(x) =  {x}^{3}  + 5x \\ g(x) = 4x \\  \\  \therefore \: (f.g)(x) = f(x) . g(x) \\  = (  {x}^{3}  + 5x ).4x \\  =  {x}^{3} .4x + 5x.4x \\    \red{{  \boxed{\bold{\therefore \: (f.g)(x) = 4 {x}^{4}  + 20 {x}^{2} }}}}

3 0
3 years ago
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