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blsea [12.9K]
3 years ago
12

Work out the value of expression a - 3b when a=16 and b=3.

Mathematics
1 answer:
Elan Coil [88]3 years ago
8 0

Answer:

your answer is going to have to be 7

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Kate is saving to take an SAT prep course that costs $250, so far , she has saved $150, and she adds $10to her savings each week
matrenka [14]

Answer:

It will be ten weeks

Step-by-step explanation:

First you would need  to find out what is 250 - 150 = 100 So they will need 100 dollars 100 divided by 10 is 10 so that will be 10 weeks

7 0
3 years ago
Is the system of equations consistent and independent, consistent and dependent, or inconsistent?
ollegr [7]

Answer: Consistent and independent.

Step-by-step explanation:

We have the system of equations:

y = 4x - 4

y = -4x + 4.

Now, first let's define the terms used in the question.

consistent and independent: we have only one solution.

consistent and dependent: we have infinite solutions.

inconsistent: we do not have solutions.

Now, let's look at the system:

y = 4x - 4

y = -4x + 4.

Let's take the quotient between both the equations:

(y/y) = (4x - 4)/(-4x + 4)

1 = (4x - 4)/(-4x + 4)

let's see if we can solve this for x.

1*(-4x + 4) = 4x - 4

-4*x + 4 = 4x - 4

-4x - 4x = -4 - 4

-8*x = -8

x = -8/-8 = 1.

and to find the value of y, we can input this value of x in one of the equations:

y = 4*1 - 4 = 0.

Then we have only one solution, (1, 0).

(and will be the same if you input x in the other equation, as the right side is minus the right side of the first equation)

Then the system is consistent and independent.

5 0
3 years ago
Find the difference.<br> 5wx2 - 2wx2<br><br> A. 3 <br> B. 2wx2 <br> C. 3wx2 <br> D. 4wx2
scoray [572]
5wx2-2wx2 :

5-2 wx2

= 3 wx2

Answer C

hope this helps!
7 0
4 years ago
I need help plsssssss
NeTakaya

Answer:

Oh dear, Prodigy?

Step-by-step explanation:

*basically ea math game*

uh let's see...

1.3333333333333 mg

3 0
3 years ago
Read 2 more answers
A. 15<br> B. 10<br> C. 3/8<br> D. 1/8
Anna71 [15]

Answer:

D

Step-by-step explanation:

the theoretical probability is a fancy term for an even amount of both, which would be 20 flips landing on H, and 20 landing on T. Since the question is asking what's the difference between the theoretical probability and the experimental results, you'd take 20(theoretical number of flips that land on H) and subtract 15 (experiment results for the amount of flips that land on H), and 20 - 15 = 5. Now that you know the difference is 5, you would divide 5 by 40 to find the answer. 5/40 = 1/8 when you simplify, making the answer D.

8 0
3 years ago
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