All categories

4 years ago

Can anyone give me a hand with an expression 4x+8 step by step please

Mathematics

1 answer:

chubhunter [2.5K]4 years ago

5 0

Factor 4x+8

4x+8

=4(x+2)

Answer:

4(x+2)

You might be interested in

Dave is making a recipe for soup that includes 12 cups of water and 3 cups of broth. how many times as much water as broth will

OlgaM077 [116]

Answer: There is 4 times as much water than broth in the soup recipe.

Step-by-step explanation:

12/3 = 4

3 0

3 years ago

Read 2 more answers

Let f(x)=x^2 and g(x)=x-3. Find (f º g)(-1).

ValentinkaMS [17]

Answer:

Step-by-step explanation:

8 0

3 years ago

During a 10-day period, the balance of Martas chexking account dropped $290. Write a division expression ro represent the change

LenKa [72]

I did x - 10 =290
+10 +10
-------------
x = 300 so they took $1.00 a day

8 0

3 years ago

Write a number in the blank to make the number sentence true<br> 3 times ____<1

Sedbober [7]

0 or any negative number. :)

8 0

3 years ago

Read 2 more answers

Of all customers purchasing automatic garage-door openers, 75% purchase Swedish model. Let X = the number among the next 15 purc

Lelechka [254]

Answer:

$P(X=k) = {15 \choose k} * 0.75^{k}*0.25^{15-k}$

For any integer k between 0 and 15, and 0 for other values of k.

$P(X>10) = 0.2252+ 0.2252+ 0.1559+0.0668+0.0134 = 0.6865$

c) P(6 ≤ X ≤ 10) = 0.2737

d) μ = 15*0.75 = 11.25. σ² = 11.25*0.25 = 2.8125

Step-by-step explanation:

X is a binomial random variable with parameters n = 15, p = 0.75. Therefore

$P(X=k) = {15 \choose k} * 0.75^{k}*0.25^{15-k}$

For any integer k between 0 and 15, and 0 for other values of k.

P(X>10) = P(X=11) + P(X=12)+ P(X=13)+P(X=14)+P(x=15)

$P(X=11) = {15 \choose 11} * 0.75^{11} * 0.25^4 = 0.2252$

$P(X=12) = {15 \choose 12} * 0.75^{12} * 0.25^3 = 0.2252$

$P(X=13) = {15 \choose 13} * 0.75^{13} * 0.25^2 = 0.1559$

$P(X=14) = {15 \choose 14} * 0.75^{14} * 0.25 = 0.0668$

$P(X=15) = {15 \choose 15} * 0.75^{15} = 0.0134$

Thus,

$P(X>10) = 0.2252+ 0.2252+ 0.1559+0.0668+0.0134 = 0.6865$

c) P(6 ≤ X ≤ 10) = P(X = 6) + P(X = 7) + P(X = 8) + P(X=9) + P(X=10)

$P(X=6) = {15 \choose 6} * 0.75^{6} * 0.25^9 = 0.0034$

$P(X=7) = {15 \choose 7} * 0.75^{7} * 0.25^8 = 0.0131$

$P(X=8) = {15 \choose 8} * 0.75^{8} * 0.25^7 = 0.0393$

$P(X=9) = {15 \choose 9} * 0.75^{9} * 0.25^6 = 0.0918$

$P(X=10) = {15 \choose 10} * 0.75^{10} * 0.25^{5} = 0.1652$

Thereofre,

$P(6 \leq X \leq 10) = 0.0034 + 0.0134 + 0.0393 + 0.0918 + 0.1652 = 0.2737$

d) μ = n*p = 15*0.75 = 11.25

σ² = np(1-p) = 11.25*0.25 = 2.8125

3 0

3 years ago