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LuckyWell [14K]
2 years ago
7

Which expression is equivalent to (4x + 7y) + 5z?

Mathematics
1 answer:
Oliga [24]2 years ago
4 0
<h3>(4x + 7y) + 5z = 4x + (7y + 5z)</h3>

It's an Associative property (a + b) + c = a + (b + c)

<h3>Answer: A)</h3>
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Write the equation 6x + 2y = 4 in slope-intercept form.
Mademuasel [1]
The slope of 6x + 2y = 4 is
y = -3x + 2
3 0
3 years ago
Read 2 more answers
James divided the candy bar<br>into 4 parts.<br>He gave 1 part to his friend.​
photoshop1234 [79]

Answer:

If he gave 1 part to his friend then he will have 3 parts left. Is that what you needed help on?

7 0
3 years ago
Match the formula for each volume to the figure to which it applies, Figure Volume Right Circular Cylinder a. V = arah Sphere b.
Vaselesa [24]

Right circular cylinder

V=\pi\cdot r^2\cdot h

Sphere

V=\frac{4}{3}\pi\cdot r^3

Rectangular solid

V=l\cdot w\cdot h

6 0
1 year ago
In December 2004, a report based on the National Survey on Drug Use and Health estimated that 20% of all Americans aged 16 to 20
o-na [289]

Answer:

542

Step-by-step explanation:

We are required to find the sample size at 98% confidence interval in this question

E = 0.04

P* = 20% = 0.20

n = p* x (1-p)(Zα/2÷E)²

α = 1 - 0.98

= 0.02

To get Critical value

= 0.02/2 = 0.01

The critical value at 0.01 is 2.33

Inserting values into formula:

O.2 x 0.8(2.33/0.04)²

= 0.8 x 0.2 x 58.25²

= 542.89

The value of n must be an integer therefore the answer is 542.

4 0
2 years ago
Help me please with math
fomenos

Let's make a table of differences

0 3 8 15 24

3  5 7  9

 2  2  2

Constant second difference means a quadratic polynomial,

f(n)=an² + bn +c

f(1)=0, f(2)=3, f(3)=8

0 = a+b+c

3 = 4a + 2b + c

8 = 9a + 3b + c

Subtracting pairs

3 = 3a+b

5 = 5a + b

Subtracting,

2 = 2a

a = 1

b = 5 - 5a = 0

c = -a-b = -1

f(n)=n² -1

Duh, shoulda noticed that at the beginning.

f(17)=17²-1 = 288

a₁ =5

aₙ = aₙ₋₁ - 7

aₙ = a₁ + d(n-1)

aₙ = 5 - 7(n-1)

a₇ = 5 - 7(6) = -37

Answer: -37

4 0
3 years ago
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