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Leviafan [203]
3 years ago
9

Simplify the expression: 2(2 + 4k)

Mathematics
2 answers:
Nuetrik [128]3 years ago
8 0
Simplify the expression
2(2+4k)
(4+8k) = 12k
2(2+4k) = 12k
snow_lady [41]3 years ago
3 0
12k is your answer
Brainliest would be nice
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A certain bank offers a car loan with a fixed annual interest rate. Justine applied for the loan and used the entire amount to b
natita [175]

Answer: $10000

Step-by-step explanation:

From the question,

Principal = $43000

Time = 5 years

Rate = Unknown

Simple Interest = $51,600 - $43000 = $8600

We need to calculate the rate of interest which will be:

Interest = PRT/100

8600 = (43000 × 5 × Rate) / 100

Cross multiply

8600 × 100 = 215000 × Rate

Rate = 860000 / 215000

Rate = 4%

Assuming Justine borrowed $50,000 instead, the yearly Interest will be:

= (50000 × 5 × 4%)

= 50000 × 5 × 0.04

= $10000

8 0
3 years ago
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, two ind
liberstina [14]

Answer:

Step-by-step explanation:

Hello!

You have two populations of interest and want to compare them. If you define the study variables as:

X₁: average hourly wages of an employee of the Downtown store.

n₁= 25

X[bar]₁= $9

S₁= $2

X₂: average hourly wages of an employee of the North Mall store.

n₂= 20

X[bar]₂= $8

S₂= $1

Both samples taken are independent, assuming that both populations are normal and that their population variances are equal I'll use the Student's-t statistic with a pooled sample variance to calculate the Confidence interval:

95% CI for μ₁ - μ₂

(X[bar]₁-X[bar]₂) ± t_{n_1+n_2-2; 1-\alpha /2} * (Sa*\sqrt{\frac{1}{n_1} +\frac{1}{n_2} } )

Sa^2= \frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2}

Sa^2= \frac{24*4+19*1}{25+20-2}= 2.67

Sa= 1.64

t_{n_1-n_2-2;1-\alpha /2} = t_{43; 0.975} = 2.017

(9-8)±2.017*(1.64*\sqrt{\frac{1}{25} +\frac{1}{20} } )

[0.007636;1.9923]

I hope it helps!

6 0
3 years ago
Karen got a bit confused in math class today when Mrs. Hudson was talking about the different subsets for classifying real numbe
VashaNatasha [74]
Let me give the significations following
natural numbers :ACA  counting numbers the numbers you naturally say when counting.
whole numbers: include all natural numbers zero
Integers: include all whole numbers and their opposites.
Rational: can be written ASA fraction or ratio of two integers also decimals that terminate or repeat 
Irrational: can not be written a fraction, decimals, do not terminate or repeat.




4 0
3 years ago
Read 2 more answers
What is 867547545465552155252626223+26345547555555+4+5-5+8-5+8-5+85-8+565252425x8x7787879%12+7675867857485+25422555655-7+7377-2-
chubhunter [2.5K]

Answer: its 0 lol

Step-by-step explanation:

3 0
3 years ago
PLEASE I NEED IT ASAP<br><br> find the value of t if t - 7 = 12
mart [117]
T= 19!! Hope this helped mark me brainliest ?? 19-7=12
6 0
3 years ago
Read 2 more answers
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