All categories

3 years ago

Which expression is equivalent to7(a+2)

Mathematics

2 answers:

Contact [7]3 years ago

8 0

Answer:

7a+14

or a=2

Step-by-step explanation:

you distribute to the numbers in the parenthesis and divide to get the answer for a

Vanyuwa [196]3 years ago

6 0

Answer:

7a + 14

just multiply 7 by both a and 2

You might be interested in

According to insurance records, a car with a certain protection system will be recovered 87% of the time. If 600 stolen cars are

White raven [17]

Answer:

The mean and standard deviation of the number of cars recovered after being stolen is 522 and 8.24 respectively.

Step-by-step explanation:

We are given that according to insurance records, a car with a certain protection system will be recovered 87% of the time.

Also, 600 stolen cars are randomly selected.

Let X = Number of cars recovered after being stolen

The above situation can be represented through binomial distribution;

$P(X=r)=\binom{n}{r}\times p^{r} \times (1-p)^{n-r} ;x=01,2,3,......$

where, n = number of trials = 600 cars

r = number of success

p = probability of success which in our question is the probability

that car with a certain protection system will be recovered,

i.e. p = 87%.

So, X ~ Binom(n = 600, p = 0.87)

Now, the mean of X, E(X) = $n \times p$

= $600 \times 0.87$ = 522

Also, the standard deviation of X, S.D.(X) = $\sqrt{n \times p \times (1-p)}$

= $\sqrt{600 \times 0.87 \times (1-0.87)}$

= 8.24

3 0

3 years ago

4-3+2(x-1) if x = 1 Help me plzzzz

motikmotik

Just replace x with 1.

4-3+2(1-1)

then solve

4-3+2(0)

4-3 + 0

1 + 0

1 is the answer.

3 0

4 years ago

Solve for v. -9/8 = v - 1/2

Usimov [2.4K]

Answer:

$- \frac{5}{8}$

Step-by-step explanation:

$- \frac{9}{8} = v - \frac{1}{2} \\ \\ \frac{1}{2} - \frac{9}{8} = v \\ \\ \frac{4}{8} - \frac{9}{8} = v \\ \\ \frac{4 - 9}{8} = v \\ \\ v = - \frac{5}{8} \\$

3 0

3 years ago

Determine the answer to (-5) + 4 and explain the steps using a number line

olganol [36]

Answer:

-1

Step-by-step explanation:

-5 is still -5 then add positive 4 and it will still give u the same answer

7 0

3 years ago

Read 2 more answers

Evan measured the length of a set of nails. The mean of lengths was 3 cm. The absolute mean deviation was 1 cm. Which could be E

Airida [17]

Answer:

B) 2 cm, 2 cm, 3 cm, 5 cm

brainliest???

Step-by-step explanation:

already took the test

8 0

3 years ago

Read 2 more answers